Performance assessment of municipal solid waste operated modified downdraft gasifier for variations of air input and preheated air temperature
Journal Title: Environmental Health Engineering and Management Journal - Year 2025, Vol 12, Issue 1
Abstract
Background: Many municipal solid wastes (MSWs) produced worldwide can be used as an alternative to fossil energy. Synthetic gas produced from gasification of MSW can be used as fuel gas in various applications. Methods: It deals with the performance assessment of a modified downdraft gasifier using MSW RDF pellets as feedstock under different equivalence ratios (ERs), air ratios (ARs), and preheated air temperatures (PATs). The effect of distinct values of ER, AR, and PAT on the cold gas efficiency (CGE), carbon conversion efficiency (CCE), and the concentrations of the syngas components were determined. Results: The optimum values of ER and AR for unheated air were 0.4 and 0.66, respectively, which have been tested for the effect of PAT (from 100 to 210 °C). It was found that air preheating improved the performance of the gasification process, in which the percentage of the flammable gases increased CO (from 17.3% to 26.2%), H2 (from 14.6% to 22.2%), and CH4 (from 1.75% to 1.85%) compared to nonpreheating air. Preheating of air also increased the value of LHV (from 4600 to 6053 kJ/kg). The CGE and CCE were increased from 68 to 69% and 85 to 93%, respectively, at the preheating temperature of 210 °C. Conclusion: The results of this study can be used to optimize the performance of multistage gasifiers using air preheating and multistage air inlets.
Authors and Affiliations
Kapil Dev Sharma, Siddharth Jain
Keywords
Related Articles
- EP ID EP763197
- DOI 10.34172/EHEM.1382
- Views 10
- Downloads 0
Evaluation of Cd phytoremediation by Portulaca oleracea irrigated by contaminated water
Background: Worldwide, more than 10 million regions with an area of more than 20 million hectares are considered contaminated soils. The expansion in industrial activities and urbanization has led to accumulation of hi...
Investigating the pathological changes and activity of antioxidant enzymes in testicular tissue of male Wistar rats exposed to welding fumes
Background: Welding is an extensively utilized industrial technique, which involves the fusion of fumes containing various heavy metals. To protect exposed workers, it is crucial to investigate the subsequent adverse e...
Enhanced electro-Fenton processes by persulfate radical for atenolol oxidation from aqueous solution
Background: Pharmaceuticals and personal care products (PPCPs) are a group of emerging environmental pollutants that have attracted the attention of many researchers due to their harmful effects on aquatic environment, a...
Advanced oxidation of high concentrations of formaldehyde in aqueous solution under fluorescent and UV light
Background: Formaldehyde (FA) is a carcinogen compound, which is soluble in water. FA can be removed from aqueous solution using advanced oxidation methods. Methods: In this study, the oxidation of FA was studied under...
Feasibility study of the application of treated wastewater for the irrigation of forest species in a Saharan area
Background: After suffering from an acute problem of excess water for a long time, the Oasis of Ouargla benefited from an aerated lagoon treatment plant, producing biologically treated domestic effluents. The aim of th...