Abstract
Thermo-chemical conversion technologies (incineration, gasification and pyrolysis) have emerged as potential technologies for municipal solid waste management (MSWM). This is happening due to the increase of the need for clean and sustainable energy as a result of fossil fuel depletion. The increase in municipal solid waste (MSW) generation as well as land scarcity for MSW disposal is another reason in raising the potential for thermal technology. Incineration has been the most common thermo-chemical technology for solid waste disposal. However, due to environmental concern, gasification technology is currently becoming more preferable since it is environmental friendly for MSW disposal as well as energy recovery. The aim of this study is to analyze the flue gases obtained from the hybrid fixed bed gasifier during gasification of MSW. The fire was initiated by wood charcoal and six kilograms of MSW was fed in the gasifier. The combustion was supported by the air supplied by electric blower. The flue gas analyzer, TESTO 327-1 was used to analyze the concentration of CO, CO2 and O2. Results show that after 150 minutes of the gasification process, O2 concentration increased by 17.2% while CO and CO2 decreased by 0.0% and 3.77% respectively. The experimental results show that, during gasification process the O2 concentration was increasing with time while CO and CO2 concentration decreased.
Highlights
In the developing countries municipal solid waste (MSW) generation has increased tremendously due to population growth, and changes in life style
The study presents the result obtained from the hybrid fixed bed gasifier (HFBG) which was designed to deliver 20 kW thermal power, for MSW gasification
During laboratory analysis results indicated that with time there was an increase in oxygen while carbon dioxide, and carbon monoxide, decreased
Summary
In the developing countries municipal solid waste (MSW) generation has increased tremendously due to population growth, and changes in life style This leads to urbanization and land scarcity in most of the urban areas, which enforce alternative methods for municipal solid waste management (MSWM). Among the three thermochemical technologies, gasification is considered to be more effective due to its high volume and mass reduction as well as energy recovery from MSW with less environmental pollution [1,2,3] This type of technology converts chemical elements contained in biomass solid fuel into syngas including hydrogen and carbon monoxide [4, 5]. The choice of gasification technology is fueled by an increase in energy demand as well as depletion of conventional fossil fuel and raise the needs for alternative and renewable energy sources including biomass wastes [6]
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