Municipal solid waste(MSW)management faces persistent challenges from odour emissions driven by high moisture content and microbial activity.Despite extensive studies on mechanical and biological treatments,there rema...Municipal solid waste(MSW)management faces persistent challenges from odour emissions driven by high moisture content and microbial activity.Despite extensive studies on mechanical and biological treatments,there remains a significant research gap in rapid,low-energy deodorization methods applicable before waste-to-fuel conversion.This study introduces a novel integration of coconut shell-derived liquid smoke treatment and a two-step drying process(sun and rotary drying)to deodorize MSW and convert it into refuse-derived fuel(RDF)pellets.A 5%liquid smoke solution was sprayed onto the waste to inhibit microbial growth,followed by sun drying(reducing moisture from 30%to~14%)and rotary drying at 35–40℃ for 2 h,achieving a final moisture content below 12%.The treated waste is then ground,sieved(20-mesh),and densified into RDF pellets.Microbial analysis revealed a significant reduction in odour-causing bacteria,including Salmonella sp.,Pseudomonas aeruginosa,and Escherichia coli.The resulting RDF pellets had a calorific value of 18,480 kJ/kg with a moisture content of 11.5%,meeting the requirements of DIN 51731 and SNI 8966:2021.Compared with conventional bio-drying,this approach significantly shortens the drying time(from 4–5 d to 7 h)and improves both hygiene and fuel performance.By addressing this overlooked stage in MSW processing,this study contributes new insights for researchers,policymakers,and urban waste managers.The findings support more informed decision-making,promote environmentally conscious waste management,and provide a scalable,practical solution for reducing landfill reliance while producing clean energy from solid waste.展开更多
基金National Institute of Research and Innovation Agency(BRIN),Indonesia with scheme of Rumah Program for Renewable Energy,2024.
文摘Municipal solid waste(MSW)management faces persistent challenges from odour emissions driven by high moisture content and microbial activity.Despite extensive studies on mechanical and biological treatments,there remains a significant research gap in rapid,low-energy deodorization methods applicable before waste-to-fuel conversion.This study introduces a novel integration of coconut shell-derived liquid smoke treatment and a two-step drying process(sun and rotary drying)to deodorize MSW and convert it into refuse-derived fuel(RDF)pellets.A 5%liquid smoke solution was sprayed onto the waste to inhibit microbial growth,followed by sun drying(reducing moisture from 30%to~14%)and rotary drying at 35–40℃ for 2 h,achieving a final moisture content below 12%.The treated waste is then ground,sieved(20-mesh),and densified into RDF pellets.Microbial analysis revealed a significant reduction in odour-causing bacteria,including Salmonella sp.,Pseudomonas aeruginosa,and Escherichia coli.The resulting RDF pellets had a calorific value of 18,480 kJ/kg with a moisture content of 11.5%,meeting the requirements of DIN 51731 and SNI 8966:2021.Compared with conventional bio-drying,this approach significantly shortens the drying time(from 4–5 d to 7 h)and improves both hygiene and fuel performance.By addressing this overlooked stage in MSW processing,this study contributes new insights for researchers,policymakers,and urban waste managers.The findings support more informed decision-making,promote environmentally conscious waste management,and provide a scalable,practical solution for reducing landfill reliance while producing clean energy from solid waste.
