Combined Heat and Power Systems

Combined Heat and Power (CHP), or Cogeneration, is the sequential or simultaneous generation of multiple forms of useful energy (usually mechanical and thermal) in a single, integrated system. In conventional electricity generation systems, about 35% of the energy potential contained in the fuel is converted on average into electricity, whilst the rest is lost as waste heat. CHP systems uses both electricity and heat and therefore can achieve an efficiency of up to 90%, giving energy savings between 15-40% when compared with the separate production of electricity from conventional power stations and of heat from boilers. CHP systems consist of … Continue reading

Jatropha’s Relevance for MENA

Jatropha is a genus of nearly 175 species of shrubs, low-growing plants, and trees.  However, discussions of Jatropha as a biodiesel are actually means a particular species of the plant, Jatropha curcas. The plant is indigenous to parts of Central America, however it has spread to other tropical and subtropical regions in Africa and Asia. Jatropha curcas is a perennial shrub that, on average, grows approximately three to five meters in height. It has smooth grey bark with large and pale green leaves. The plant produces flowers and fruits are produced in winter or throughout the year depending on temperature … Continue reading

African Development Bank and Renewable Energy

Africa has huge renewable energy potential with some of the world’s largest concentration of alternative energy resources in the form of solar, wind, hydro, and energy. Overall, 17 countries in sub-Saharan Africa are in the top-33 countries worldwide with combined reserves of solar, wind, hydro, and geothermal energy far exceeding annual consumption. Most of the sub-Saharan countries receive solar radiation in the range of 6-8 kWh/m2/day, which counts among the highest amounts of solar radiation in the world. Until now, only a small fraction of Africa’s vast renewable energy potential has been tapped.  The renewable energy resources have the potential … Continue reading

Bioenergy Resources in Jordan

  With high population growth rate, increase in industrial and commercial activities, high cost of imported energy fuels and higher GHGs emissions, supply of cheap and clean energy resources has become a challenge for the Jordanian Government. Consequently, the need for implementing renewable energy projects, especially solar, wind and biomass, has emerged as a national priority in recent years. Jordan has substantial biomass resources in the form of municipal solid wastes, sewage, industrial wastes and animal manure. Municipal solid wastes represent the best source of biomass in Jordan. Solid waste generation in the country is approximately 2 million tons per … Continue reading

Agricultural Biomass in MENA

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.  The contribution of the agricultural sector to the overall economy varies significantly among countries in the region, ranging, for example, from about 3.2 percent in Saudi Arabia to 13.4 percent in Egypt.  Large scale irrigation coupled with mechanization has enabled extensive production of high-value cash crops, including fruits, vegetables, … Continue reading

Biomass Potential of Date Palm Wastes

Date palm is one of the principal agricultural products in the arid and semi-arid region of the world, especially Middle East and North Africa (MENA) region. There are more than 120 million date palm trees worldwide yielding several million tons of dates per year, apart from secondary products including palm midribs, leaves, stems, fronds and coir. The Arab world has more than 84 million date palm trees with the majority in Egypt, Iraq, Saudi Arabia, Iran, Algeria, Morocco, Tunisia and United Arab Emirates. Egypt is the world’s largest date producer with annual production of 1.47 million tons of dates in … Continue reading

Biomass Energy in Jordan

Jordan has promising biomass energy potential in the form of municipal solid wastes, crop residues and organic industrial wastes.  Municipal solid wastes represent the best source of biomass in Jordan. In terms of quantity per capita and constituents, the waste generated in Jordan is comparable to most semi-industrialized nations. Agricultural biomass offers a low energy potential due to arid climate in most of the country. The major biomass energy resources in Jordan are: Municipal waste from big cities Organic wastes from slaughterhouse, vegetable market, hotels and restaurants. Organic waste from agro-industries Animal manure, mainly from cows and chickens. Sewage sludge … Continue reading

Polylactic Acid – An Emerging Bioplastic

During the last decade, the movement towards biobased products has increased dramatically as a result of increasing environment awareness and high increase in fossil fuel prices. Polylactic Acid (PLA) is an eco-friendly polymer derived from lactic acid which can be produced by fermentation of renewable resources. It is a new type of biocompatible material produced from utilizing lactic acid as monomer. Since lactic acid is a non-toxic component, which exists in human metabolism, PLA is safe polyester for human-related applications. In comparison to traditional plastics, PLA has great potential in the plastic market. Petroleum-based plastic takes hundreds of year to biologically … Continue reading

Introduction to Biorefinery

A biorefinery is a facility that integrates biomass conversion processes and equipment to produce fuels, power, and value-added chemicals from biomass. Biorefinery is analogous to today’s petroleum refinery, which produces multiple fuels and products from petroleum. By producing several products, a biorefinery takes advantage of the various components in biomass and their intermediates, therefore maximizing the value derived from the biomass feedstock. A biorefinery could, for example, produce one or several low-volume, but high-value, chemical products and a low-value, but high-volume liquid transportation fuel such as biodiesel or bioethanol. At the same time, it can generate electricity and process heat, … Continue reading

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