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

Analysis of a Composting Facility

The composting process is a complex interaction between the waste and the microorganisms within the waste. The microorganisms that carry out this process fall into three groups: bacteria, fungi, and actinomycetes. Actinomycetes are a form of fungi-like bacteria that break down organic matter. The first stage of the biological activity is the consumption of easily available sugars by bacteria, which causes a fast rise in temperature. The second stage involves bacteria and actinomycetes that cause cellulose breakdown. The last stage is concerned with the breakdown of the tougher lignins by fungi. The composting process occurs when biodegradable waste is piled together … Continue reading

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. Layer your compost bin with dry and fresh ingredients: The best way to start a compost pile is to make yourself … Continue reading

Waste-to-Energy in Jordan: Potential and Challenges

Effective sustainable solid waste management is of great importance both for people’s health and for environmental protection. In Jordan, insufficient financial resources, growing population, rapid urbanization, inadequate management and lacking of technical skills represent a serious environmental challenge confronting local government. At the same time, energy remains Jordan’s top challenge for development. The energy needs to be produced in a sustainable way, preferably from renewable sources which have a minimum environmental impact. To face the future problems in waste management, as well as securing the demand of renewable energy, it is necessary to reuse the wasted resources in energy production. … Continue reading

Overview of Composting Methods

The composting process is a complex interaction between the waste and the microorganisms within the waste. The microorganisms that carry out this process fall into three groups: bacteria, fungi, and actinomycetes. Actinomycetes are a form of fungi-like bacteria that break down organic matter. The first stage of the biological activity is the consumption of easily available sugars by bacteria, which causes a fast rise in temperature. The second stage involves bacteria and actinomycetes that cause cellulose breakdown. The last stage is concerned with the breakdown of the tougher lignins by fungi. Types of Composting The methodology of composting can be categorized into three major segments—anaerobic … Continue reading

What is Vermicomposting

Vermicomposting is a type of composting in which certain species of earthworms are used to enhance the process of organic waste conversion and produce a better end-product. It is a mesophilic process utilizing microorganisms and earthworms. Earthworms feeds the organic waste materials and passes it through their digestive system and gives out in a granular form (cocoons) which is known as vermicompost. Simply speaking, vermicompost is earthworm excrement, called castings, which can improve biological, chemical, and physical properties of the soil. The chemical secretions in the earthworm’s digestive tract help break down soil and organic matter, so the castings contain … Continue reading

Trash Talk from Doha

On arriving a few years ago from a town in the UK that boasts a university course in waste management, and a very efficient weekly recyclable waste collection from our houses, I was a bit shocked, like many Europeans by how difficult it was to recycle in Doha. Having had the moral obligation to recycle drummed into me since I was quite young, I felt guilty throwing away all my waste into one bin, destined to fill up a huge smelly hole in the desert, where it would take a long time, if not forever to biodegrade. The Real Picture … Continue reading

Thermophilic Composting and its Relevance for MENA

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 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. Salient Features The most important feature of thermophilic composting process is its operating temperature range of 70 – 80 °C which eliminates all pathogens and harmful … Continue reading

Composting Scenario in Qatar

The State of Qatar has one of the highest per capita waste generation rates worldwide. In 2012, Qatar generated 8,000 tons of solid waste daily (this is excluding construction and demolition waste which amounts to 20,000 tons additional waste per day).  This number is predicted to reach 19,000 tons/day in 2032, with an annual growth rate of roughly 4.2%.1  Most of these wastes end up in landfills – in 2012, more than 90% of Qatar’s solid waste were sent to landfills although the government is intensifying its efforts to reduce this amount.  This percentage is extremely high compared to many … Continue reading

Solid Waste Management in Saudi Arabia

Saudi Arabia has been witnessing rapid industrialization, high population growth rate and fast urbanization which have resulted in increased levels of pollution and waste. Solid waste management is becoming a big challenge for the government and local bodies with each passing day. With population of around 29 million, Saudi Arabia generates more than 15 million tons of solid waste per year. The per capita waste generation is estimated at 1.5 to 1.8 kg per person per day. More than 75 percent of the population is concentrated in urban areas which make it necessary for the government to initiate measures to … Continue reading

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