Anaerobic digestion technology is one of the most paramount eco-friendly wastes to energy conversion processes. This study was conducted to characterize the physicochemical properties of khat and Cow dung along with examining the bio-methane production potential and substrate conversion rate of feedstock through seven triplicate proportions of laboratory scale batch anaerobic reactors for a 27 days digestion period under mesophilic conditions. The maximum and minimum bio-methane yield of 283.52 ± 7.17 CH mL/g VS and 142.83 ± 3.56 CH mL/g VS were generated from the digester, with the higher proportion of Khat waste in the T-5 (2:1) and the sole substrate anaerobic digestion of Cow dung in T-7 (0:1) respectively. The conversion rates of cellulose and hemicellulose components from Khat waste were 44.4 and 47.2 %, respectively. The result demonstrates that the anaerobic co-digestion of khat waste and cow dung plays a critical role in enhanced biomethane production due to effective synergism.
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http://dx.doi.org/10.1016/j.heliyon.2024.e41124 | DOI Listing |
Heliyon
December 2024
Departments of Water Supply and Environmental Engineering, Arba Minch Water Technology Institute (AWTI), P. O. Box 21, Arba Minch, Ethiopia.
Heliyon
October 2024
Department of Mechanical Engineering, College of Engineering and Technology, Dambi Dollo University, Dambi Dollo, Ethiopia.
Heliyon
November 2024
Environmental and Occupational Health and Safety Department, Institute of Public Health, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia.
Introduction: Cadmium is among the most hazardous heavy metals, posing the greatest risk to human beings and the environment. Adsorption with activated carbon prepared from agricultural waste is the most effective way to remove cadmium (II) from wastewater. In this study, activated carbon prepared from the stem of Khat ( plant was used for the removal of cadmium (II) from wastewater.
View Article and Find Full Text PDFPLoS One
November 2024
Addis Ababa Institute of Technology-Addis Ababa University, School of Mechanical and Industrial Engineering, Addis Ababa, Ethiopia.
Environ Health Insights
March 2024
Institute of Health, Department of Environmental Health Science and Technology, Jimma University, Jimma, Ethiopia.
Introduction: Municipal solid waste collectors are at risk of experiencing work-related health problems due to the waste they handle and the physical effort they put in. Work-related injuries among domestic waste collectors have been the subject of scant research in developing nations. Therefore, it is necessary to describe work-related injuries in these subpopulation groups.
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