2013•Environmental Science & TechnologyRequires access
Dry anaerobic co-digestion of water hyacinth and municipal solid waste.
Lin Wang, Chen Li, Yan ZongCheng, Honglin Wang, Huang HeMao
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Abstract
Feasibility of anaerobic co-digestion of water hyacinth and municipal solid waste(MSW) under mesophilic conditions was investigated.Effects of total solid(TS),inoculum ratio(IR) and water hyacinth ratio(WR) on anaerobic digestion process were studied.Results showed that adding 5% water hyacinth to MSW anaerobic digestion system could effectively prevent the impact on the system pH value caused by variations of TS and IR,shorten the lag phase,centralize the biogas yield peak and enhance biogas production.But the biogas production decreased when WR increased to 10%.Volatile solid(VS) degradation rates of all experiments were between 38.18% and 58.10% after 70d anaerobic digestion.Orthogonal experiment results indicated that the optimum process conditions were TS 23%,IR 100% and WR 5% for the anaerobic co-digestion of water hyacinth and MSW.