Anaerobic Co-Digestion of Grease Trap Waste
Abstract:Anaerobic co-digestion of grease trap waste can not only enhance the biogas production, but also provide a sustainable method for grease trap waste disposal. The goal of this study is to explore the limits of anaerobic co-digestion of grease trap waste through stepwise increase in grease trap waste loading rate. Routine monitoring for anaerobic process stability indicated a successful maintenance of stable and active anaerobic process in both reactors. volatile solid (VS) reduction rates on day 89 were 30.1% and 32.2% for reactor A and B, respectively. COD reduction rates on day 91 were 27.9% and 32.3% for reactor A and B, respectively. Average methane yield of reactor B was 0.18 L-CH4/g-VS added from day 61 to 90. Reactor A remained at an average methane yield of 0.14 L-CH4/g-VS added from day 24 to 81. 28.6% increase in methane yield was observed due to mixing duration enhancement from 2 to 30 min/hour.
Document Type: Research Article
Publication date: 2012-01-01
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