Assessment of Municipal Organic Solid Waste, as a Potential Feedstock for Briquette Production in Kampala, Uganda

• 作者: Ahamada Zziwa Allan John Komakech Joshua Wanyama Nicholas Kiggundu Richard Basona Abondio Robert Kyeyune Kambugu Samuel Kyamanywa
• 来源期刊: 可持续生物质能源系统(英文)
• 学科: 地球科学
• 关键词: Organic Waste Heavy Metal Concentration BRIQUETTES Calorific Value Renewable Energy
• 年，卷（期）: 2020,（2）
• 页码范围: 62-75
• 页数: 14页
• 分类号: X70

摘要

The current shortage of energy resources coupled with environmental degradation problems resulting from deforestation in Uganda has contributed to increased demand for renewable energy resources including municipal organic solid waste and agricultural residues. However, organic waste from Municipal Solid Waste (MSW) may contain contaminants that are harmful to public health and the environment. This study determined the heavy metal concentration in MSW in Kampala City, Uganda. Also, the physicochemical properties of briquettes produced from the MSW were compared with charcoal. The waste samples were collected from residential, institutional and market areas over a period of two weeks.<span style="font-family:Verdana;"> They were then analyzed for the presence of heavy metals. Briquettes were made from the bio-waste </span><span style="font-family:Verdana;">and </span><span style="font-family:Verdana;">were subjected to calorific and proximate analysis. Results indicated that the mean concentrations of Cd, Cr, Cu, Fe, and Pb were 1.25 mg/kg, 2.04 mg/kg, 38.2 mg/kg, 3.97 mg/kg and 1.99 mg/kg respectively while Hg was not detected. The calorific values of briquettes ranged from 8.9 to 15.3 MJ/kg and were lower than those of charcoal. Heavy metal concentrations in bio-waste collected were below the permissible acceptable limits. T</span><span style="font-family:Verdana;">hese findings indicate that the sampled MSW does not pose a health hazard arising from the presence of such heavy metals and therefore could be a safe source of renewable energy.</span>