Study on mechanisms of biosurfactant-enhanced composting technology for waste management

Biosurfactants produced by microbial activities may potentially promote efficiency of solid waste composting. A study was performed to characterize the effect of biosurfactant on solid waste biodegradation during a composting process. Solid waste was shredded then treated in a 8-L batch reactor. Biosurfactant production, characteristics and maturity degree were monitored every day throughout the process. Biosurfactant was examined on the basis of surface tension and emulsification capacity. The maturity degree was evaluated by measuring indices including C/N, CHA (Humic acid carbon) and CFA (fulvic acid carbon). With the experimental results, the impact of biosurfactant production on compost maturity was studied, which provided important implications in understanding mechanisms of solid waste composting. This research output was also proved to be valuable for improving the composting efficiency and providing technical support for waste management.