Co-digestion of source segregated domestic food waste to improve process stability

被引：100

作者：

Zhang, Yue ^{[1
]}

Banks, Charles J. ^{[1
]}

Heaven, Sonia ^{[1
]}

机构：

[1] Univ Southampton, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 114卷

关键词：

Food waste; Card packaging; Cattle slurry; Ammonia; Specific methane production; CENTRALIZED BIOGAS PLANTS; GREENHOUSE-GAS EMISSIONS; ANAEROBIC-DIGESTION; SLAUGHTERHOUSE WASTE; ACETATE OXIDATION; CATTLE SLURRY; MANURE; CODIGESTION; MITIGATION; AMMONIA;

D O I：

10.1016/j.biortech.2012.03.040

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Cattle slurry and card packaging were used to improve the operational stability of food waste digestion, with the aim of reducing digestate total ammoniacal nitrogen concentrations compared to food waste only. Use of cattle slurry could have major environmental benefits through reducing greenhouse gas emissions associated with current management practices; whilst card packaging is closely linked to food waste and could be co-collected as a source segregated material. Both options increase the renewable energy potential whilst retaining organic matter and nutrients for soil replenishment. Co-digestion allowed higher organic loadings and gave a more stable process. A high ammonia inoculum acclimated more readily to cattle slurry than card packaging, probably through supplementation by trace elements and micro-organisms. Long-term operation at a 75-litre scale showed a characteristic pattern of volatile fatty acid accumulation in mono-digestion of food waste, and allowed performance parameters to be determined for the co-digestion substrates. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：168 / 178

页数：11

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