Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
680648 | Bioresource Technology | 2014 | 7 Pages |
Abstract
Spent mushroom substrate (SMS) is a biomass waste generated from mushroom production. About 5Â kg of SMS is generated for every kg of mushroom produced. In this study, solid state anaerobic digestion (SS-AD) of SMS, wheat straw, yard trimmings, and their mixtures was investigated at different feedstock to effluent ratios. SMS was found to be highly degradable, which resulted in inhibition of SS-AD due to volatile fatty acid (VFA) accumulation and a decrease in pH. This issue was addressed by co-digestion of SMS with either yard trimmings or wheat straw. SS-AD of SMS/yard trimmings achieved a cumulative methane yield of 194Â L/kg VS, which was 16 and 2 times higher than that from SMS and yard trimmings, respectively. SS-AD of SMS/wheat straw obtained a cumulative methane yield of 269Â L/kg VS, which was 23 times as high as that from SMS and comparable to that from wheat straw.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Yunqin Lin, Xumeng Ge, Yebo Li,