مشاكل بطاريات الرصاص الحمضية المستعملة

تستخدم بطاريات الرصاص الحمضية بشكل كبير في جميع أنحاء العالم . إذ تعد بمثابة مصدر للطاقة لمجموعة واسعة من المعدات والأجهزة المستخدمة في المنزل، و في التجارة والصناعة. وتستخدم على نطاق واسع في جميع وسائل النقل الحديثة بما في ذلك السيارات والشاحنات والحافلات والقوارب والقطارات وأنظمة النقل الجماعي السريع والمركبات الترفيهية الخ. كما أنها توفر، في حالات انقطاع الطاقة الكهربائية، طاقة الطوارئ  للعمليات الحرجة مثل تلك المتعلقة بأبراج مراقبة حركة الطيران والمستشفيات ونقاط عبور السكك الحديدية والمنشآت العسكرية، والغواصات، وأنظمة الأسلحة. وتجدر الإشارة إلى أن جميع بطاريات السيارات و 95 في المئة من البطاريات الصناعية هي خلايا رصاص ثانوية حمضية. … Continue reading

How is Crumb Rubber Produced and What are Its Uses

More than 1 billion tires are discarded around the world every year. Disposal of waste tires is a challenging task because tires have a long life and are non-biodegradable. The traditional method of tire waste management is stockpiling or illegally dumping or landfilling, all of which are short-term solution. Crumb rubber is a term used for recycled rubber from automotive and truck scrap tires. The two major technologies for producing crumb rubber are ambient mechanical grinding and cryogenic grinding. Of the two processes, cryogenic process is more expensive but it produces smoother and smaller crumbs. Ambient Mechanical Grinding In ambient … Continue reading

Green Career Tips by Salman Zafar

Salman Zafar, Founder of EcoMENA, talks to Bhavani Prakash of Green Collar Asia about cleantech industry trends, and offers tips for professionals trying to enter renewable energy and waste management sectors.   Green Collar Asia: How did you become so interested in renewable energy and waste management technologies? Salman Zafar: I am a chemical engineer by education. After completing my Master’s degree program in 2004, I got the opportunity to work as a Research Fellow on large-scale biogas power projects which initiated me into waste management/bioenergy sector. During the course of my fellowship, I was involved in the design, operation and troubleshooting of waste-to-energy plants and biomass energy … Continue reading

Food Wastes Disposal Methods

Food waste is one of the most prominent waste streams across Middle East, especially in GCC region.  The mushrooming of hotels, restaurants, fast-food joints and cafeterias in the Middle East region has resulted in the generation of huge quantities of food wastes. The proportion of food waste in municipal waste stream is gradually increasing and hence a proper food waste management strategy needs to be devised to ensure its eco-friendly and sustainable disposal in the Middle East.  Food waste is an untapped energy source that mostly ends up rotting in landfills, thereby releasing greenhouse gases into the atmosphere. Food waste includes organic … Continue reading

Business Waste Management – What Your Business Can Do Better

Have you ever wondered if your workplace has some policy regarding waste management that could be improved? Are you a business owner with the necessary awareness to manage a controlled environment where the production of waste is regulated or at least up to current standards? These are pretty valid questions in 2018, especially when corporate sensitivities are shifting to green initiatives and the adoption of energies due to the increasing requests of the world to regulate carbon emissions and save the planet. There are quite a few approaches to business waste management on corporate levels that can be adopted by … Continue reading

إدارة النفايات في المغرب

تعد إدارة النفايات الصلبة واحدة من المشكلات البيئية الرئيسية التي تهدد المملكة  المغربية. إذ تنتج هذه الأخيرة أكثر من 5 ملايين طن من النفايات الصلبة بمعدل نمو توليد النفايات السنوي وصل إلى 3 في المئة. و يعاني التخلص السليم من النفايات الصلبة البلدية في المغرب من أوجه قصور رئيسية  تتمثل في عدم وجود البنية التحتية المناسبة والتمويل المناسب في المناطق خارج المدن الرئيسية. وقد أبان تقرير البنك الدولي،  على أنه في عام 2008، قبل الإصلاح الأخير  “لم يتم  جمع إلا 70 من المئة فقط من النفايات الصلبة البلدية في المدن وأن فقط  أقل من 10 من المئة من النفايات التي … Continue reading

Biogas Potential in the Middle East

Anaerobic digestion is the natural biological process which stabilizes organic waste in the absence of air and transforms it into biofertilizer and biogas. It is a reliable technology for the treatment of wet, organic waste.  Organic waste from various sources is biochemically degraded in highly controlled, oxygen-free conditions circumstances resulting in the production of biogas which can be used to produce both electricity and heat. Anaerobic digestion is particularly suited to wet organic material and is commonly used for treating animal manure, organic fraction of MSW, sewage and industrial effluents. Anaerobic digestion is a unique treatment solution for organic wastes … Continue reading

Dealing with Polystyrene Wastes

Polystyrene (also known as EPS Foam or Styrofoam) is a highly popular plastic packaging material which finds wide application in packaging of food items, electronic goods, electrical appliances, furniture etc due to its excellent insulating and protective properties. Polystyrene is also used to make useful products such as disposable cups, trays, cutlery, cartons, cases etc. Despite the attractiveness of polystyrene, municipalities and organisations are facing a growing problem in disposal of polystyrene packaging and products. Being large and bulky, polystyrene take up significant space in rubbish bins which means that bins becomes full more quickly and therefore needs to be emptied … Continue reading

صحوة بيئية

الخطر الذي يهدد الامن الصحي والبيئي للمجتمع المحلي في بيروت دفع المجتمع المدني البيئي لإعلان مواجهة إجراءات التخلص من النفايات عن طريق الحرق، ومن المعروف ان هذا الإجراء له مخاطره الصحية على الإنسان والبيئة، وسبق وكان للمجتمع المدني البيئي في البحرين موقفه المعارض لاعتماد هذا النظام الذي وجد إستجابة من الجهات العليا والمختصة في الشأن البيئي. التحرك المدني البيئي في بيروت يمثل توجه مهم للتنوير البيئي وتعزيز الصحوة البيئية للمجتمع في مواجهة المشاريع المضرة بصحة الانسان ومحيطه البيئي، لذلك وجدنا ضرورة تسليط الضوء على التحرك البيئي في بيروت. ان توجهنا في تسليط الضوء على التحرك البيئي جاء بناء على التعاون … Continue reading

Everything You Should Know About Thermophilic Composting

Thermophilic composting of organic waste is getting increasing attention worldwide because of its ability to convert solid wastes into organic fertilizer within a short period of time. The thermophilic composting system consists of an enclosed reactor laced with a microbe-enzyme cocktail. The commonly used microorganisms are naturally occurring bacillus sp., pseudomonas sp, bifidobacterium sp., lactobacillus sp., streptomyces sp., corynbacterium sp etc. Enzymes such as proteinase, keratinase, lipase and cellulose are employed to accelerate the aerobic digestion process. Features of Thermophilic Composting The most important feature of thermophilic composting process is its operating temperature range of 70 – 80 °C which … Continue reading

The Menace of Single-Use Plastic Bags

Single-use plastic bags are one of the most objectionable types of litter in urban areas. The sheer volume of plastic waste generated, coupled with energy and material resources required for production, as well as emissions resulting from these processes, paint a grim picture of the environmental havoc created by plastic bags. These single-use plastic bags are causing extensive negative effects to the environment because of how simply they can be used in one’s daily life. There are candy wrappers, takeout containers, and other packaging that should’ve otherwise been avoided. Single-use plastic bags are a huge threat to the environment as … Continue reading

Waste Awareness in Qatar: A Survey

Waste awareness in Qatar has gained traction in recent years, but more efforts are required to make the masses aware about the consequences of reckless waste generation and disposal, and how sustainable living practices and recycling can help in making Qatar a truly sustainable nation. Below is the outcome of an interesting survey on waste awareness which was conducted among Qataris and non-Qataris (expatriates). Plastic is the most common waste generated in a typical household in Qatar. One-third of overall respondents say that of all products, the volume of the plastic waste generated is higher, followed by food waste (19%) … Continue reading