Effects of trace element addition on process stability during anaerobic co-digestion of OFMSW and slaughterhouse waste

被引：101
作者：
Moestedt, J. [1 ,2 ,4 ]
Nordell, E. [1 ,2 ]
Yekta, S. Shakeri [2 ,5 ]
Lundgren, J. [1 ,2 ]
Marti, M. [2 ,5 ]
Sundberg, C. [2 ,5 ]
Ejlertsson, J. [2 ,3 ,5 ]
Svensson, B. H. [2 ,5 ]
Bjorn, A. [2 ,5 ]
机构：
[1] Tekniska Verken & Linkoping AB, Dept R&D Biogas, SE-58115 Linkoping, Sweden
[2] Linkoping Univ, Biogas Res Ctr, SE-58183 Linkoping, Sweden
[3] Scandinavian Biogas Fuels AB, SE-11160 Stockholm, Sweden
[4] Swedish Univ Agr Sci, Dept Microbiol, BioCtr, SE-75007 Uppsala, Sweden
[5] Linkoping Univ, Dept Themat Studies Water & Environm Studies, SE-58183 Linkoping, Sweden
来源：
WASTE MANAGEMENT | 2016年 / 47卷
关键词：
Trace elements; Anaerobic digestion; OFMSW; Methanogenic population; Viscosity; EXTRACELLULAR POLYMERIC SUBSTANCES; SYNTROPHIC ACETATE OXIDATION; BIOGAS PRODUCTION; METHANE PRODUCTION; ACTIVATED-SLUDGE; FATTY-ACIDS; FOOD WASTE; DEGRADATION; INHIBITION; BACTERIA;
D O I：
10.1016/j.wasman.2015.03.007
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study used semi-continuous laboratory scale biogas reactors to simulate the effects of trace-element addition in different combinations, while degrading the organic fraction of municipal solid waste and slaughterhouse waste. The results show that the combined addition of Fe, Co and Ni was superior to the addition of only Fe, Fe and Co or Fe and Ni. However, the addition of only Fe resulted in a more stable process than the combined addition of Fe and Co, perhaps indicating a too efficient acidogenesis and/or homoacetogenesis in relation to a Ni-deprived methanogenic population. The results were observed in terms of higher biogas production (+9%), biogas production rates (+35%) and reduced VFA concentration for combined addition compared to only Fe and Ni. The higher stability was supported by observations of differences in viscosity, intraday WA-and biogas kinetics as well as by the 16S rRNA gene and 16S rRNA of the methanogens.(c) 2015 Elsevier Ltd. All rights reserved.
引用
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页码：11 / 20
页数：10
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