https://scholars.lib.ntu.edu.tw/handle/123456789/435600
標題: | Biogas production by anaerobic co-digestion of dairy wastewater with the crude glycerol from slaughterhouse sludge cake transesterification | 作者: | Chou, Y.-C. Su, J.-J. JUNG-JENG SU |
關鍵字: | Anaerobic co-digestion; Biodiesel; Biogas; Crude glycerol; Fatty acid methyl ester (FAME); Sludge; Transesterification | 公開日期: | 2019 | 卷: | 9 | 期: | 9 | 來源出版物: | Animals | 摘要: | Excessive sludge in the wastewater treatment basins has to be removed periodically and collected as the form of sludge cake for promising good water quality of the effluent. This study aims to evaluate the feasibility of biogas production by anaerobic co-digestion of dairy cattle wastewater and crude glycerol from transesterification of sludge cake. Different ratios of crude glycerol, i.e., 2, 4, and 8% (v/v), from the previous experiment were mixed with dairy cattle wastewater and inoculated with anaerobic sludge in cap-sealed 1-L serum bottles as anaerobic digesters. Although the 8% crude glycerol set showed the highest total biogas and methane production, low pH from volatile fatty acid accumulation decreased the removal efficiency of chemical oxygen demand, biochemical oxygen demand, and suspended solids after a 14-d incubation period. The experimental sets with 2 and 4% of crude glycerol increased total methane production up to 177 and 226% compared to the control set, respectively. We found that addition of crude glycerol decreased removal efficiency of total solids and volatile solids. In our study, we proved that slaughterhouse sludge cake is a feasible feedstock for producing biogas through transesterification and anaerobic co-digestion. © 2019 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/435600 | DOI: | 10.3390/ani9090618 | SDG/關鍵字: | biodiesel; biogas; fatty acid ester; glycerol; methane; oleic acid; palmitic acid; palmitoleic acid; stearic acid; volatile fatty acid; anaerobic digestion; Article; biochemical oxygen demand; chemical oxygen demand; comparative study; controlled study; dairy cattle; dairy wastewater; flame ionization detection; gas chromatography; incubation time; microbial activity; nonhuman; organic matter production; oxygen consumption; slaughterhouse; sludge digestion; sludge management; suspended particulate matter; thermal conductivity; transesterification; waste water management; water quality |
顯示於: | 動物科學技術學系 |
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