Methods for Aluminium Recycling

The demand for aluminium products is growing steadily because of their positive contribution to modern living. Aluminium is the second most widely used metal whereas the aluminum can is the most recycled consumer product in the world. Aluminium finds extensive use in air, road and sea transport; food and medicine; packaging; construction; electronics and electrical power transmission. The excellent recyclability of aluminium, together with its high scrap value and low energy needs during recycling make aluminium highly desirable to one and all. The global aluminum demand is forecasted to soar to nearly 70 million tons by 2020 from around 37 million tons currently.

Recycling of Aluminium

The contribution of recycled metal to the global output of aluminium products has increased from 17 percent in 1960 to 34 percent today, and expected to rise to almost 40 percent by 2020. Global recycling rates are high, with approximately 90 per cent of the metal used for transport and construction applications recovered, and over 60 per cent of used beverage cans are collected.

Aluminium does not degrade during the recycling process, since its atomic structure is not altered during melting. Aluminium recycling is both economically and environmentally effective, as recycled aluminium requires only 5% of the energy used to make primary aluminium, and can have the same properties as the parent metal. Infact, aluminium can be recycled endlessly without loss of material properties.

During the course of multiple recycling, more and more alloying elements are introduced into the metal cycle. This effect is put to good use in the production of casting alloys, which generally need these elements to attain the desired alloy properties.The industry has a long tradition of collecting and recycling used aluminium products.

Over the years, USA and European countries have developed robust separate collection systems for aluminium packaging with a good degree of success. Recycling aluminium reduces the need for raw materials and reduces the use of valuable energy resources. Recycled aluminium is made into aircraft, automobiles, bicycles, boats, computers, cookware, gutters, siding, wire and cans.

Recycling of Aluminium Cans

Aluminum can is the most recycled consumer product in the world. Each year, the aluminum industry pays out more than US$800 million for empty aluminum cans. Recycling aluminium cans is a closed-loop process since used beverage cans that are recycled are primarily used to make beverage cans. Recycled aluminium cans are used again for the production of new cans or for the production of other valuable aluminium products such as engine blocks, building facades or bicycles. In Europe about 50% of all semi-fabricated aluminium used for the production of new beverage cans and other aluminium packaging products comes from recycled aluminium. The major steps in aluminium can recycling are as followe:

Step 1: Aluminium cans are collected from recycling centers, community drop-off sites, curbside pick-up spots etc.

Step 2: Compressed into highly dense briquettes or bales at scrap processing facilities and shipped to aluminum companies for melting.

Step 3: Condensed cans are shredded, crushed and stripped of their inside and outside dyes. The potato chip-sized pieces are loaded into melting furnaces, where the recycled metal is blended with brand new aluminum.

Step 4: Molten aluminum is converted into ingots which are fed into rolling mills that reduce the thickness to about 1/100 of an inch.

Step 5: This metal is then coiled and shipped to can manufacturers. The cans are then delivered to beverage companies for filling.

Step 6: The new cans, filled with your favorite beverages, are then returned to store shelves in as little as 60 days … and the recycling process begins again!

 

Recycling of Aluminium Packaging

Aluminium packaging fits every desired recycling and processing route. Aluminium packaging needs to be separated from other packing material when intended for material recycling. A growing number of sorting facilities are equipped with eddy current separators which offer a comprehensive means of sorting the aluminium fraction.

Multi-material packaging systems may consist of plastics, tinplate, beverage cartons and paper packaging, apart from aluminium packaging, e.g. beverage cartons. A variety of systems have been developed to extract aluminium from complex packaging systems, such as repulping, mechanical separation and pyrolysis. In pyrolysis, the non-metallic components are removed from the aluminium by evaporation. A newer technology is the thermal plasma process where the three components – aluminium, plastic and paper – are separated into distinct fractions.

Aluminium from Urban Wastes

Aluminium exposed to fires at dumps can be a serious environmental problem in the form of poisonous gases and mosquito breeding. Recycled aluminium can be utilized for almost all applications, and can preserve raw materials and reduce toxic emissions, apart from significant energy conservation.

Aluminium can also be extracted from the bottom ashes of municipal solid waste incinerators as aluminium nodules. In many European countries, municipal solid waste is entirely or partly incinerated; in this case the contained thin gauge aluminium foil is oxidized and delivers energy while thicker gauges can be extracted from the bottom ash.

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تحسين الوضع الاقتصادي للمجتمعات عن طريق تعزيز مشاريع إعادة التدوير

 

 تعتبر البلديات و المجالس المحلية المسئول المباشر عن إدارة ملف النفايات الصلبة في المدن حول العالم للحفاظ على المدن نظيفة. ففي الوقت التي تحتل فيه التكنولوجيا المتوفرة (جمع النفايات، النقل، إعادة التدوير، التخزين، المعالجة)، تزداد النداءات الدولية لإعادة النظر إلى مجال إدارة النفايات الصلبة كأداة لحل العديد من المشاكل الاقتصادية، الإجتماعية، و البيئية. و من هذه الأصوات الرئيس الأمريكي السابق "بيل كلينتون" عندما صرح في المؤتمر السنوي لمبادرة كلينتون العالمية عام 2010

" إذا أردتم محاربة التغير المناخي، تحسين الصحة العامة، إيجاد فرص عمل للفقراء و خلق مناخ مناسب للروّاد، فإن أفضل الطرق للوصول لهذا الشيئ هو إغلاق مكبات النفايات"

 

فيجب على السلطات أن تنظر إلى ملف إدارة النفايات الصلبة بمنظور أشمل بحيث يشمل تحسن عام في صحة الناس و البيئة، استخدام أمثل للمصادر (موارد الطاقة) و تحسين الوضع الإقتصادي. لهذا أصبحت إدارة النفايات الصلبة تحد صعب للجهات المختصة، رجال الأعمال، و المواطنين، فإدارة النفايات الصلبة تحتاج إلى "خلطة سحرية" تنمزج فيها السياسة الإدارية، المسئولية الإجتماعية، القطاع التجاري، و المواطنين. 

 

فنجاح تطبيق نظام فعّال لإدارة النفايات الصلبة يعتمد بشكل كبير على عوامل محلية و إقليمية متعددة في المجالات الاقتصادية، الاجتماعية، و السياسية في المجتمع المحلي. فباللإضافة إلى نظام إدارة يشمل جميع الحلول المتوفرة، ففهم جيد للآلية التي تؤثر فيها العوامل السياسية، الاجتماعية، و الاقتصادية مهمة لتطوير استراتيجية فعّالة لإدارة النفايات الصلبة. فعلى الجهات المسئولة النظر إلى هذا الملف كفرصة للنهوض بالوضع الاقتصادي للمجتمع من خلال خلق آلاف فرص العمل و إنشاء مجال جديد للاستثمار.

 

فمن أجل التأثير على الطبقة العامة من الناس تجاه إعادة تدوير المخلفات، يجب عليهم أن يشعروا بصورة مباشرة بالفائدة التي تعود عليهم، لذلك كمرحلى أولى يجب تغيير الصورة السيئة في مخيلاتهم عن هذا المجال عن طريق حملات التوعية و المبادرات و الدراسات التفصيلية لكي يشعروا بحجم الفرصة و فوائدها.

 

الفيديو التالي لمشروع إنشاء وحدة إعادة فرز للنفايات الصلبة في مدينة رفح (فلسطين). تم تنفيذ المشروع عن طريق جمعية أصدقاء البيئة  و بتمويل من الوكالة اليابانية للتنمية، فعلي الرغم من الجدل القائم في هذا المجال حول فاعلية المشروع، فقد خلقت العديد من فرص العمل للنساء و ساعدت على تقليل كميات النفايات المرسلة لمكب صوفا. إنها خطوة جيدة في الاتجاه الصحيح و لكن كان الأولى، قبل إنشاء وحدة الفرز، دراسة الحلول و الخيارات للنفايات المفرزة في نهاية خط الانتاج حيث أن هناك الآلاف الأطنان من النفايات المكدسة بسبب عدم وجود أي طريقة لإعادة تدويرها بعد عملية الفرز.

 

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Community Engagement in Recycling Initiatives in Qatar

The current state of environmental custodianship in Qatar leaves much to be desired from the national government and other institutions that publicly endorse initiatives with much fan-fare but do not commit to sustained action. My previous piece titled “Environmental Initiatives in Middle East – Challenges and Remedies” illuminated some of these gaps, but did not provide a detailed description of what underpins this trend and possible solutions might look like. Thus, this article seeks to delve deeper into how state institutions and civil society in Qatar may be able to work cooperatively in staving off further environmental degradation, especially with regards to waste management and recycling.

I believe that real success will be achieved through popular buy-in and a paradigm shift towards recognizing the interconnectedness of humans with their surroundings, which can be encouraged through education. Perhaps more importantly, there needs to be a public acknowledgement that all individuals residing in Qatar have a vested interest in pushing for greater environmental protection enforcement and accountability. In a region that is already faced with a lack of potable water and arable land, allowing the existing course to be maintained is not only risky, it is flat-out dangerous to the nation’s survival.

An Uphill Battle, But a Necessary One

Individuals that either live in or visited a Gulf Cooperation Council (GCC) nation, especially a hydrocarbon-rich rentier state like Qatar, are probably quite familiar with the inadequacies of current recycling initiatives. As someone who has visited the country on three different occasions I can tell you that I have searched high and low for something resembling a recycling bin, can, or other receptacle but to no avail, save for a few located in Education City. One might imagine this to be exceptionally jarring coming from the hyper-attentive, green-obsessed Washington, DC where trash and recycling cans typically are placed together on streets and in buildings.

Further adding to my chagrin is the apparent disconnect between high level, widely publicized recycling improvements and the realities (and consequences) manifesting among general society. For example, last year there was much excitement surrounding the announcement of upcoming environmental reforms in July 2014, but it appears nothing further came to fruition.

The article touches upon some of the apparent hindrances for recycling programs and other environmental initiatives: bureaucracy; paperwork; budgetary constraints. I would add to this list based upon personal experiences: general apathy towards recycling; inaccessibility of bins; perception of additional costs to conducting business.

Fair enough – I acknowledge that some of these issues are out of citizens’ and expats’ hands, but that is no excuse for giving up. The predicted 6.8% GDP growth spurred by the upcoming 2022 FIFA World Cup and hydrocarbon exports will surely put further pressure on an already fragile ecosystem and lead to an uptick in waste production. This is not meant to stoke unnecessary fear, but the equation here is straightforward; more people present in Qatar, more trash will be created from residential and commercial zones. As noted by fellow EcoMENA contributor, Surya Suresh, the nation presently possesses one solid waste facility at Mesaieed and three landfills devoted to particular items, which now seem to be overwhelmed by growing waste inputs.

Possible Solutions: Personal and Community Action

Given this lag in state responses to the existing recycling crisis and future issues stemming from it, readers may be asking what they can do to help. At the personal level, I would encourage Qatari residents, as well as others in neighboring nations, to begin with educating themselves about the current state of recycling initiatives and conducting an inventory of their daily waste generation. EcoMENA website offers a variety of informative pieces and external resources useful to individuals seeking more information.

My latter point about doing a personal inventory is about consciousness-raising about how we each contribute to a wider problem and identifying means of reducing our impact on the environment. Examples from my own life that I believe are applicable in Qatar include counting the number of plastic bags I used to transport groceries and replacing them with a backpack and reusable bags. I also frequently re-appropriate glass jars for storing items, such as rice, spices, and coffee – make sure to wash them well before reuse! It has taken me several years to get to past the social stigmas surrounding reusing containers and to cultivate the future planning to bring my reusable bags with me, but knowing my actions, aggregated with those of my friends and family, positively affect the environment is quite rewarding and reinforces good behavior. Give it a shot and see what happens.

Furthermore, it may be beneficial for the community at large to begin discussing the topic of recycling and what they would like to see, rather than solely wait on state agencies to address issues. Doing so could initially be formulated on a level that many Qatari residents are probably most familiar with: their place of employment, apartment, or neighborhood. After all, if individuals, specifically employers, are expected to bear the increased costs associated with improved recycling then an understanding of what people want is necessary in hopefully resolving issues effectively and with greater community enthusiasm.

Because of the nature of nation-states’ institutions typically being reactive entities and incapable of being aware of every societal problem, it is up to community-level groups to voice their concerns and be committed to change. Organizations such as the Qatar Green Building Council and the Qatar Green Leaders, offer a variety of informative pieces and training services that may help in establishing dialogues between groups and the government. Perhaps this is too idealistic right now, but Qatari residents have organized popular support for other initiatives, notably in the initial pilot recycling program in 2012. Now let us make that a sustained commitment to recycling!

 

References

  1. Andrew Clark, “Environmental Initiatives in Middle East – Challenges and Remedies,” on EcoMENA.org, http://www.ecomena.org/environment-middle-east/.
  2. Doha News Staff, “Official: New, Sorely Needed Recycling Policies in Qatar Afoot,” on Dohanews.co, http://dohanews.co/official-new-sorely-needed-recycling-policies-in/.
  3. Qatar National Bank, “Qatar Economic Insight 2013,” on www.qnb.com.qa  
  4. Surya Suresh, “Waste Management Outlook for Qatar,” http://www.ecomena.org/waste-qatar/
  5. Doha News Staff, “Responding to Community Calls, Qatar Rolls Out Pilot Recycling Program,” http://dohanews.co/responding-to-community-calls-qatar-rolls-out-pilot/.

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The Paper Bag Boy of Abu Dhabi

Abdul Muqeet, also known as the Paper Bag Boy, has risen from being just another ordinary student to an extra-ordinary environmentalist. At just ten years old, Abdul Muqeet has demonstrated his commitment to saving the environment in United Arab Emirates and elsewhere. 

Inspired by the 2010 campaign “UAE Free of Plastic Bags”, Abdul Muqeet, a student of Standard V at Abu Dhabi Indian School, applied his own initiative and imagination to create 100% recycled carry bags using discarded newspapers. He then set out to distribute these bags in Abu Dhabi, replacing plastic bags that take hundreds of years to degrade biologically. The bags were lovingly named ‘Mukku bags' and Abdul Muqeet became famous as the Paper Bag Boy.

Abdul Muqeet’s environmental initiative has catalyzed a much larger community campaign. During the first year, Abdul Muqeet created and donated more than 4,000 paper bags in Abu Dhabi. In addition, he has led workshops at schools, private companies and government entities, demonstrating how to create paper bags using old newspapers. His school along with a number of companies in Abu Dhabi adopted his idea by exchanging their plastic bags for paper bags.

Abdul Muqeet was one of the youngest recipients of Abu Dhabi Awards 2011, for his remarkable contribution to conserve environment. The awards were presented by General Sheikh Mohammad Bin Zayed Al Nahyan, Crown Prince of Abu Dhabi and Deputy Commander of the UAE Armed Forces. In 2011, Abdul Muqeet was selected to attend the United Nation’s Tunza conference in Indonesia where he demonstrated his commitment for a cleaner environment through his paper bag initiative. He is actively involved in spreading environmental awareness worldwide, especially UAE, India, USA and Indonesia.

 

Abdul Muqeet continues to make headlines for his concerted efforts towards a plastic-free environment, and has been widely covered by leading newspapers in UAE and other countries. He tirelessly campaigned for the Rio+20 summit, urging world leaders to commit to the Green Economy. “Plant more trees; use less water; reuse and recycle; always remember that everything in this world can be recycled but not time,” offers Abdul.

He has been remarkably supported by his parents and siblings throughout his truly inspiring environmental sojourn. Abdul Muqeet’s monumental achievements at such a tender age make him a torch-bearer of the global environmental movement, and should also inspire the young generation to protect the environment by implementing the concept of ‘Zero Waste’.

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Composting Guidelines for Beginners

It seems everyone is concerned about the environment and trying to reduce their “carbon footprint”.  Let us hope that this trend will continue and grow as a worldwide phenomenon.  Composting has been around for many years and is a great way to keep biodegradables out of the landfill and to reap the reward of some fabulous “black gold”.  That’s what master gardeners call compost and it’s great for improving your soil.  Plants love it. 
Check out few Rules to Remember About Composting.
  1. Layer your compost bin with dry and fresh ingredients: The best way to start a compost pile is to make yourself a bin either with wood or chicken wire.  Layering fresh grass clippings and dried leaves is a great start.
  2. Remember to turn your compost pile: As the ingredients in your compost pile start to biodegrade they will start to get hot.  To avoid your compost pile rotting and stinking you need to turn the pile to aerate it.  This addition of air into the pile will speed up the decomposition.
  3. Add water to your compost pile: Adding water will also speed up the process of scraps turning into compost.  Don’t add too much water, but if you haven’t gotten any rain in a while it’s a good idea to add some water to the pile just to encourage it along.
  4. Don’t add meat scraps to your pile: Vegetable scraps are okay to add to your compost pile, but don’t add meat scraps.  Not only do they stink as they rot, but they will attract unwanted guests like raccoons that will get into your compost bin and make a mess of it.
  5. If possible have more than one pile going: Since it takes time for raw materials to turn into compost you may want to have multiple piles going at the same time.  Once you fill up the first bin start a second one and so on.  That way you can allow the ingredient in the first pile to completely transform into compost and still have a place to keep putting your new scraps and clippings.  This also allows you to always keep a supply of compost coming for different planting seasons.
  6. Never put trash in your compost pile: Just because something says that it is recyclable it doesn’t mean that it should necessarily go into the compost bin.  For example, newspapers will compost and can be put into a compost pile, but you will want to shred the newspapers and not just toss them in the bin in a stack.  Things like plastic and tin should not be put into a compost pile, but can be recycled in other ways.
  7. Allow your compost to complete the composting process before using: It might be tempting to use your new compost in your beds as soon as it starts looking like black soil, but you need to make sure that it’s completely done composting otherwise you could be adding weed seeds into your beds and you will not be happy with the extra weeds that will pop up.
  8. Straw can be added if dried leaves are not available: Dried materials as well as green materials need to be added to a compost bin.  In the Fall you will have a huge supply of dried leaves, but what do you do if you don’t have any dried leaves?  Add straw or hay to the compost bin, but again these will often contain weed seeds so be careful to make sure they are completely composted before using them.
  9. Egg Shells and Coffee grounds are a great addition: Not only potato skins are considered kitchen scraps.  Eggshells and coffee grounds are great additions to compost piles because they add nutrients that will enhance the quality of the end product.
  10. Never put pet droppings in your compost pile: I’m sure you’ve heard that manure is great for your garden, but cow manure is cured for quite a while before used in a garden.  Pet droppings are far to hot and acidic for a home compost pile and will just make it stink.

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Green Resolutions for New Year

green-resolutionsThis year, in addition to our personal goals, let us make another New Year resolution: to make this year the year we really ‘go green’. Supporting environmental initiatives should be one of our main priorities and needs to be reflected through our resolutions and commitment to safeguard it against all forms of pollution and to protect our fragile and finite resources. Depending on our age, work, location etc., our priorities may be different but our actions should be in unison towards environmental protection.

We need to understand that we have very recklessly plundered the global resources in a short span of time that is causing many adversities and catastrophes, but we are the only species that have to take preventive measures to avoid any such occurrences in future. Let us make sincere pledges and serious commitments towards our planet and protecting our environment.

Let us, at the least, try to support the following activities and tasks starting from this year and onward, if we have not practiced earlier:

  • Protect and enhance the green spaces, parks and playgrounds.
  • Utilizing our roof for gardening and creating green areas.
  • Enviauditing of our household and office related activities. Improving tasks that require electricity and water usage.
  • Use minimum water for our daily activities.
  • Wash clothes in normal water and washing only when full loads are in the dishwasher and washing machine.
  • Turn off the faucet while we brush our teeth or shave.
  • Watering our lawn in the morning/ evening to reduce evaporation losses.
  • Changing incandescent bulbs for C.F.L.s.
  • Conserve energy in all forms. Switch lights when not in use.
  • Unplug mobile charger and computer after use as it wastes a lot of energy.
  • Avoid fast fashion. Reduce our insatiable appetite for design apparel and related clothing that we wear for only one season and throw it in next. Only buy what you need.
  • Do green shopping and donate items/ clothes we do not use.
  • Detox your home. Only use safe chemicals and detergents as household cleaning products for furniture, bathrooms and clothes including air fresheners.
  • Reuse and recycle material
  • Plan vehicle trips to avoid peak hours and traffic congestion.
  • Avoiding wasting any food items.
  • Avoid plastic bags and taking our own bag for shopping.
  • Avoid using Styrofoam cups, disposable cutlery and other related items.
  • Avoid un-necessary print outs and photocopy.
  • Minimize using bottled drinking water. This is expensive and generates plastic bottles waste. Instead use filtering equipment at home or use large refillable and reusable bottles.
  • Avoid using paper towels and napkins. Instead use cotton clothes and old used fabrics.
  • Enhancing our awareness by reading and knowing more on environment.

Let us make sincere pledges and serious commitments towards our planet and protecting our environment (Image Courtesy: www.inhabitat.com)

Let us make sincere pledges and serious commitments towards our planet and protecting our environment (Image Courtesy: www.inhabitat.com)

Enjoy the festivities of the season and be a more responsible citizen of the world. Happy New Year!

Recycling of PET Plastic Wastes

Like all other modern urban centers, the Middle East also faces challenges in environmental protection due to tremendous tonnage of waste produced in different forms. The gross urban waste generation from Middle East countries exceeds 150 million tons per annum, out of which 10-15 percent is contributed by plastic wastes. The burgeoning population, growing consumption, and an increasing trend towards a “disposable” culture, is causing nightmares to municipal authorities across the region and beyond.

Plastic consumption has grown at a tremendous rate over the past two decades as plastics now play an important role in all aspects of modern lifestyle. Plastics are used in the manufacture of numerous products such as protective packaging, lightweight and safety components in cars, mobile phones, insulation materials in buildings, domestic appliances, furniture items, medical devices etc. Because plastic does not decompose biologically, the amount of plastic waste in our surroundings is steadily increasing. More than 90% of the articles found on the sea beaches contain plastic. Plastic waste is often the most objectionable kind of litter and will be visible for months in landfill sites without degrading.

Recycling Process

After PET plastic containers are collected they must be sorted and prepared for sale. The amount and type of sorting and processing required will depend upon purchaser specifications and the extent to which consumers separate recyclable materials of different types and remove contaminants.

Collected PET plastic containers are delivered to a materials recovery facility to begin the recycling process. Sorting and grinding alone are not sufficient preparation of PET bottles and containers for re-manufacturing. There are many items that are physically attached to the PET bottle or containers that require further processing for their removal. These items include the plastic cups on the bottom of many carbonated beverage bottles (known as base cups), labels and caps.

Dirty regrind is processed into a form that can be used by converters. At a reclaiming facility, the dirty flake passes through a series of sorting and cleaning stages to separate PET from other materials that may be contained on the bottle or from contaminants that might be present. First, regrind material is passed through an air classifier which removes materials lighter than the PET such as plastic or paper labels and fines.

The flakes are then washed with a special detergent in a scrubber. This step removes food residue that might remain on the inside surface of PET bottles and containers, glue that is used to adhere labels to the PET containers, and any dirt that might be present. Next, the flakes pass through a “float/sink” classifier. During this process, PET flakes, which are heavier than water, sink in the classifier, while base cups made from high-density polyethylene plastic (HDPE) and caps and rings made from polypropylene plastic (PP), both of which are lighter than water, float to the top.

After drying, the PET flakes pass through an electrostatic separator, which produces a magnetic field to separate PET flakes from any aluminum that might be present as a result of bottle caps and tennis ball can lids and rings. Once all of these processing steps have been completed, the PET plastic is now in a form known as “clean flake.” In some cases reclaimers will further process clean flake in a “repelletizing” stage, which turns the flake into “pellet.” Clean PET flake or pellet is then processed by reclaimers or converters which transform the flake or pellet into a commodity-grade raw material form such as fiber, sheet, or engineered or compounded pellet, which is finally sold to end-users to manufacture new products.

 

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Significance of E-Waste Management

Electronic waste (or e-waste) is the fastest growing waste stream, and its disposal is a major environmental concern in all parts of the world. More than 50 million tons of e-waste is generated every year with major fraction finding its way to landfills and dumpsites. E-waste comprises as much as 8% of the municipal solid waste stream in rich nations, such as those in GCC. Globally only 15 – 20 percent of e-waste is recycled while the rest is dumped into developing countries. However, in the Middle East, merely 5 percent of e-waste is sent to recycling facilities (which are located in Asia, Africa and South America) while the rest ends up in landfills.

What is E-Waste

The term ‘e-waste’ stands for any electrical or electronic appliance that has reached its end-of-life, such as refrigerators, washing machines, microwaves, cell phones, TVs and computers. Such waste is made up of ferrous and non-ferrous metals, plastics, glass, wood, circuit boards, ceramics, rubber etc. The major constituent of e-waste is iron and steel (about 50%) followed by plastics (21%), and non-ferrous metals (13%) like copper, aluminum and precious metals like silver, gold, platinum, palladium etc. E-waste also contains toxic elements like lead, mercury, arsenic, cadmium, selenium and chromium.

E-waste is different from municipal and industrial wastes and requires special handling procedures due to the presence of both valuable and expensive materials. Recycling of e-waste can help in the recovery of reusable components and base materials, especially copper and precious metals. However, due to lack of recycling facilities, high labour costs, and tough environmental regulations, rich countries either landfill or export e-waste to poor countries which is illegal under the Basel Convention.

Health Hazards

Recycling techniques for e-waste include burning and dissolution in strong acids with few measures to protect human health and the environment. E-waste workers often suffer from bad health effects through skin contact and inhalation. Workers, consumers and communities are exposed to the chemicals contained in electronics throughout their life cycle, from manufacture through use and disposal. The incineration, land-filling, and illegal dumping of electronic wastes all contribute toxic chemicals to the environment.

Electronics recycling workers have been shown to have higher levels of flame retardants in their blood, potentially from exposure to contaminated indoor air. Similar exposures are likely for communities where recycling plants are located, especially if these plants are not adequately regulated. Much of the electronics industry in the Middle East, Europe and North America has outsourced manufacturing and disposal to developing countries of Southeast Asia, China and India. Uncontrolled management of e-wastes is having a highly negative effect on local communities and environment in these countries.

E-Waste Recycling and Metal Industry

Electrical and electronic equipment are made up a wide range of materials including metals, plastics and ceramics. For example, a mobile phone may contain more than 40 elements including base metals like copper and tin, special metals such as cobalt, indium and antimony, and precious metals like silver, gold and palladium. Infact, metals represents almost one-fourth of the weight of a phone, the remainder being plastic and ceramic material. Taking into account the fact that worldwide mobile device sale totaled 1.8 billion in 2010, this will translate into significant metal demand each year.

If we consider the high growth rate of electronic devices, including cell phones, TVs, monitors, MP3 players, digital cameras and electronic toys, it becomes obvious that these equipment are responsible for high demand and high prices for a wide range of metals. These metal resources are available again at final end-of-life of the device which could be used for manufacture of new products if effective recycling methods are implemented.

Mining plays a vital role in the supply of metals for electrical and electronic industry. The environmental impact of metal production is significant, especially for precious and special metals. For example, to produce 1 ton of gold or palladium, 10,000 tons of carbon dioxide is generated. If recycling processes are used to recover metals from e-waste, only a fraction of CO2 emissions will occur, apart from numerous other benefits.

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Waste Management Implications of 3D Printing

The rapid deployment of 3D printing is one of the most exciting developments since the appearance of the smart phone. This is technology with some serious potential to change how and where goods are manufactured, transforming supply chains. The New Scientist has gone so far as to herald 3D printing, also known as additive manufacturing, as ushering in a second industrial revolution. But is anyone thinking about how what this new development means for the waste sector?

Whilst the technology is already being put to some dubious uses, the ability to manufacture pretty much anything wherever and whenever it’s needed is certainly appealing. Interest isn’t confined to those frustrated inventors whose imaginations have been constrained by the tools they can fit in the garden shed; there’s likely to be take-up from businesses, householders – and even space agencies, apparently.

Insights into 3D Printing

By building up layer upon layer of material, a 3D printer can produce objects to any pattern, up to the maximum size it can handle. However, the applications to which these objects can be put to may be limited by the physical properties of the materials that will inputted in to 3D printers – the equivalent of the ink in the printers we’re all familiar with. Clearly, you can’t print a toaster if your 3D printer only uses plastic – but an oven knob, or even a wind-powered robot with dozens of moving parts, is no problem.

A quick scan of 3dprinter.net helpfully outlines the different methods 3D printers are able to deploy, which I’ve summarised here. Each appears to require its own TLA (Three Letter Acronym). Perhaps in the future terms such as Stereolithography (SLA), Fused Deposition Modelling (FDM), Selective Laser Sintering (SLS) and PolyJet photopolymer will become as ubiquitous as DVD and VHS have been in the past. Each of these techniques is compatible with a selection of materials, primarily plastics – but some are able to use metals, ceramics or even play-dough.

Environmental Implications

Moving significant amounts of manufacturing away from factories (predominately in Asia) to our own door steps will no doubt have profound impacts on the balance of goods and services across the globe. The economic and social implications of the technology have the potential to be significant– as do the environmental implications.

There is potential for greenhouse gas emissions savings from reduced shipping – not just cutting the number of products that make the long journey across the seas from China, but also reducing road freight. Fewer trucks on the motorways could be one of the unexpected effects 3D printing. But what are the waste management issues associated with mass deployment such technologies. And if we are future gazing, is their deployment consistent with the ‘zero waste economy’ envisaged by governments across the Middle East?

For those who haven’t yet thought too hard about what the technology is; think of it like the ‘replicator’ devices as featured in Star Trek. The replicator was a machine capable of creating objects by voice command, from what appeared to be thin air. 3D printing is only a shade less magical.

Waste Management Perspectives

3D printing is something of a double-edged sword when it comes to waste. It creates new recycling problems, but has considerable potential to help prevent waste. It could even be an outlet for recycled plastics. The opportunity for DIY repairs, especially to everyday items that we might otherwise decide were uneconomic to fix, appears enormous.

But with the higher profile that waste management has these days, I feel that we ought to be making 3D printing the first technology to be designed with recycling in mind. The waste management industry is a service industry; and typically it has had to adapt retrospectively to technology changes that it has not been able to influence. After more than a decade, we’re still catching up with the introduction of plastic milk bottles in lieu of glass. But this reactive approach clearly isn’t the best way to achieve a zero waste economy.

3D printing offers numerous challenges and opportunities to the waste management industry. As we, as a society, become more aware of material security, I’d suggest that the best approach would be for the waste management industry to engage positively with the designers and manufacturers of the 3D printing devices, trying to identify opportunities to ensure that the circular economy doesn’t become an afterthought.

The most appealing possibility would be if the machines could recycle waste polymers themselves, and re-use them as feedstock. Could we see a scenario where the machines become the recycling facility, thus greatly reducing the need for even the print medium to be transported? Bringing the nascent 3D printing industry together with experts in waste management could help to make this new technology contribute to rather than challenge our ambitions for a zero waste economy.

Note: The article is being republished with the kind permission of our collaborative partner Isonomia. The original article can be viewed at http://www.isonomia.co.uk/?p=2512

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Recycling Attitudes in Saudi Arabia: A Survey

recycling-bin-jeddahThe waste management and recycling industry in Saudi Arabia is underestimated source of income. The continued increase in population and industrial development in the Kingdom has increased individual waste generation manifolds in the past few decades. The shortage of recycling industries in Saudi Arabia cost around SR 40 billion. The focus of Saudi recycling industry is plastic, papers and metals. If recycling industry targeted only plastic and paper and metals they can meet the need of the Saudi market efficiently. According to Arab League, recycling industry can save over 500 million SR just from iron, paper and plastic waste. The distribution of recycling companies is manly in big cities which make sense for the huge expected amount of waste products. There are several recycling companies operating in the big cities such as Riyadh, Jeddah and Dammam.

The new orientation of Saudi Arabia as a country is toward the global investment as per Vision 2030 released by Chairman of the Council of Economic and Development Affairs Mohammad bin Salman bin Abdulaziz Al-Saud.  The envisioned industrial growth of Saudi Arabia emphasizes the need to adopt modern recycling practices and encourage recycling attitude in public. 

Recycling Attitude in Saudi Arabia

The government did its part by encouraging recycling industry and while I was searching I noticed that there are many recycling companies in the Kingdom.  The question is not why the recycling attitude is not active or obvious, rather than how to make it a daily habit? At the beginning, I did a personal interview with few people in their 50-60 years old about recycling and why they should do it? The answers were disappointing because of lack of knowledge and awareness. Then I thought to switch to the young generation who are more educated and knowledgeable.  

I did a short survey to get a sense of young generation recycling attitude in Saudi Arabia. The survey was addressed to the University students in the age group of 18-24 years. I asked about several issues and whether if they agree with the recycling act or not? And if there are recycling services nearby where they live? The survey showed that majority of people acknowledged the importance of recycling act and would like to contribute.  

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The survey showed that 74% of the sample think that recycling is very important but 45% of them recycle their house waste sometimes, while 44% don’t recycle at all. The challenge for 50% of the people on survey sample was the lack of recycling containers near where they live. However, around 15% of the sample think that sorting material is difficult while 12% think that recycling is not important.  

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Key Takeaways

It seems that majority of the young generation in Saudi Arabia accept the fact that recycling is a healthy choice and important to the environment but lack the facilities or containers other than embedding the attitude of recycling in their daily behavior. The need to embed the healthy recycling behavior is very important especially in this era of economic challenge. To enhance the recycling act, we should start from school to implant recycling importance in education. Although decision makers are predominantly from the older generation but discussing the present and future issues should be always directed to the young generation since they represent majority of the population in Saudi Arabia. As per latest data, the population of Saudi Arabia is 32,384,951, with median age of 28 years old and 15 person per km2 population density. The urban population represents 78% of Saudis with 1.5 percent growth rate.

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The global issues associated with unbalanced environment should be more clear to the public. The global warming, the plastic virtual life, how many years until all these products degraded and do not affect the microflora and other creatures. The importance of diversity in creatures and soil, air, water microorganisms. Why we should care when we through stuff without sorting? Why recycling is a sign of high manners? All these questions and more should be answered and included in education.  

The other major step is to establish environmental center under the government supervision to provide containers and production lines. The step of environmental care center establishment should be accompanied with recycling industry business broadcasted on all sort of media. Social media such as Snapchat, Twitter, Facebook and Instagram became the broadcasting tool for the young generation. Using the media nowadays is necessity as a part of transparency. Applying transparency is an essential key to gain people trust and attention to their contribution toward any case. Making recycling attitude as an obvious contribution of people encourages them to continue the healthy act.  

Guide to Green Shopping

With the advent of December, many festivities, celebrations and seasonal parties are planned globally. These events require feverish shopping leading to usage and wastage of more resources. In addition, December is also famous for the shopping mania that grips people from all walks of life. ‘Shopping’ is certainly one of the most famous ‘indoor sport’ being practiced equally by people of developed and developing countries depending on their life style and budget and is mainy being done by the female gender.

‘Going green’ is a way forward for all of us as it is a life style change including improving our shopping and purchasing habits so that the additional environmental burden can be reduced. The market forces, industries, manufacturers are supported by extensive media and marketing campaigns which lure us to buy more and unnecessary commodities.

The responsibility of environmental stewardship lies on us to control and behave and move to ‘green shopping’ altering our pampered purchasing habits. Start by auditing your lifestyles and shopping list and see where improvement can be achieved to reduce pollution.

Being a green consumer we need to conserve resources, save  energy, and prevent waste by buying  products that are energy efficient, are used or reusable, made with  recycled content or are  recyclable and have no  or less packaging.

Green shopping involves learning how to buy smartly and keeping environmental considerations in mind. Here are some useful eco-friendly shopping tips:

  • Check if the item is ‘really’ or ‘urgently’ required. May be you do not have an immediate use or can postpone it to any later date.
  • Check what quantity and content of the item is required and for what duration?
  • What are the alternatives to the item in terms of cost, size, number etc?
  • Buy durable products instead of disposable items. Buy things which last longer and can be reused like rechargeable batteries and avoiding plastic cutlery and plates.
  • Avoid excess packaging. Look for products that have less packaging or buy in bulk meaning less garbage generation, disposal and transportation.  
  • Share items with friends. Another way to save resources and energy is to swap and exchange with friends and family instead of buying brand-new products. This includes sharing video games, CDs, DVDs etc. instead of individuals owning them.
  • Buy energy-efficient appliances and electronic items and promote energy-efficient products.
  • Buying useful presents and gifts aiming at its use and not cost.
  • Select items made with recycled-content materials.
  • When selecting between two similar products, go for the one you can re-use or re-fill later, or the one that hasn't wasted resources on a wrapper you'll throw away as soon as you get home.
  • Buy sustainable products which have the ability to be produced (over and over again) without doing much harm to the environment.
  • Buy locally made or grown food. Local foods are fresher and keep local farmers in business, while avoiding the pollution caused by transporting products around the country or region.

Let us inspire ourselves to live a greener more environmentally friendly, healthy and sustainable lifestyle.

Become a Green Shopper. Explore, Enjoy and Make A Difference! 

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Environmental Best Practices for MENA Cement Industry

Cement production in MENA region has almost tripled during the last 15 years, mainly on account of high population growth rate, rapid urbanization, increasing industrialization and large-scale infrastructural development. The growth of cement industry in MENA is marked by factors that are directly connected with sustainability, energy efficiency and raw material supply. Although the factors differ from country to country and cannot be generalized, there are major concerns regarding shortage of raw materials, GHG emissions, dependence on fossil fuels and lack of investment in technological innovations.

For the MENA cement sector, key points for an environment-friendly industry are use of alternative raw materials and alternative fuels, energy-efficient equipment and green technologies. As the use of alternative fuels and raw materials is still uncommon in the Middle East, guidelines and regulatory framework have to be defined which can set standards for the use of alternative or waste-derived fuels like municipal solid wastes, dried sewage sludge, agricultural wastes, drilling wastes etc.

Sewage Sludge

An attractive disposal method for sewage sludge is to use it as alternative fuel source in a cement kiln. Dried sewage sludge with high organic content possesses a high calorific value. Due to the high temperature in the kiln the organic content of the sewage sludge will be completely destroyed. The resultant ash is incorporated in the cement matrix. Infact, several European countries, like Germany and Switzerland, have already started adopting this practice for sewage sludge management.

The MENA region produces huge quantity of municipal wastewater which represents a serious problem due to its high treatment costs and risk to environment, human health and marine life. Sewage generation across the region is rising by an astonishing rate of 25 percent every year. Municipal wastewater treatment plants in MENA produce large amounts of sludge whose disposal is a cause of major concern.

For example, Kuwait has 6 wastewater treatment plants, with combined capacity of treating 12,000m³ of municipal wastewater per day, which produce around 250 tons of sludge daily. Similarly Tunisia has approximately 125 wastewater treatment plants which generate around 1 million tons of sewage sludge every year. Currently most of the sewage is sent to landfills. Sewage sludge generation is bound to increase at rapid rates in MENA due to increase in number and size of urban habitats and growing industrialization.

The use of sewage sludge as alternative fuel is a common practice in cement plants around the world, Europe in particular. It could be an attractive business proposition for wastewater treatment plant operators and cement industry in the Middle East to work together to tackle the problem of sewage sludge disposal, and high energy requirements and GHGs emissions from the cement industry.

Use of sludge in cement kilns will led to eco-friendly disposal of municipal sewage

Use of sludge in cement kilns will led to eco-friendly disposal of municipal sewage

Sewage sludge has relatively high net calorific value of 10-20 MJ/kg as well as lower carbon dioxide emissions factor compared to coal when treated in a cement kiln. Use of sludge in cement kilns can also tackle the problem of safe and eco-friendly disposal of sewage sludge. The cement industry accounts for almost 5 percent of anthropogenic CO2 emissions worldwide. Treating municipal wastes in cement kilns can reduce industry’s reliance on fossil fuels and decrease greenhouse gas emissions.

Municipal Solid Wastes and Biomass

Alternative fuels, such as refuse-derived fuels or RDF, have very good energy-saving potential. The substitution of fossil fuel by alternative sources of energy is common practice in the European cement industry. The German cement industry, for example, substitutes approximately 61% of their fossil fuel demand. Typical alternative fuels available in MENA countries are municipal solid wastes, agro-industrial wastes, industrial wastes and crop residues.

The gross urban waste generation quantity from Middle East countries has crossed 150 million tons per annum. Bahrain, Saudi Arabia, UAE, Qatar and Kuwait rank in the top-ten worldwide in terms of per capita solid waste generation. Solid waste disposal is a big challenge in almost all MENA countries so conversion of MSW to RDF will not ease the environmental situation but also provide an attractive fuel for the regional cement industry. Tens of millions of tyres are discarded across the MENA region each year. Scrap tyres are are an attractive source of energy and find widespread use in countries around the world.

Agriculture plays an important role in the economies of most of the countries in the Middle East and North Africa region.  Despite the fact that MENA is the most water-scarce and dry region in the world, many countries in the region, especially those around the Mediterranean Sea, are highly dependent on agriculture. Egypt is the 14th biggest rice producer in the world and the 8th biggest cotton producer in the world. Similarly Tunisia is one of the biggest producers and exporters of olive oil in the world. Such high biomass production rates should be welcomed by the cement industry since these materials comprise cotton stalks, rice husks and rice straw which serve ideally as alternative fuels. However it is ironical that olive kernels – the waste from Tunisian olive production – is exported to European power plants in order to save fossil fuel-derived CO2 emissions there, while Tunisia imports approximately 90% of its energy demand, consisting of fossil fuels.

Drilling Wastes as Alternative Raw Material

The reduction of clinker portion in cement affords another route to reduce energy consumption. In particular, granulated blast furnace slags or even limestone have proven themselves as substitutes in cement production, thus reducing the overall energy consumption. The Middle East oil and gas industry has made a lot of effort in order to reduce the environmental impact of their activities. The use of drilling wastes and muds is preferable in cement kilns, as a cement kiln can be an attractive, less expensive alternative to a rotary kiln. In cement kilns, drilling wastes with oily components can be used in a fuel-blending program to substitute for fuel that would otherwise be needed to fire the kiln.

Conclusions

The cement industry can play a significant role in the sustainable development in the Arab countries, e.g. by reducing fossil fuel emissions with the use of refused derived fuels (RDF) made from municipal solid waste or biomass pellets. The cement companies in the Middle East can contribute to sustainability also by improving their own internal practices such as improving energy efficiency and implementing recycling programs. Businesses can show commitments to sustainability through voluntary adopting the concepts of social and environmental responsibilities, implementing cleaner production practices, and accepting extended responsibilities for their products.  

The major points of consideration are types of wastes and alternative fuels that may be used, standards for production of waste-derived fuels, emission standards and control mechanisms, permitting procedures etc. Appropriate standards also need to be established for alternative raw materials that are to be used for clinker and cement production.

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