Promoting chain elongation in mixed culture acidification reactors by addition of ethanol

被引：106

作者：

Grootscholten, T. I. M. ^{[1
]}

dal Borgo, F. Kinsky ^{[1
]}

Hamelers, H. V. M. ^{[1
]}

Buisman, C. J. N. ^{[1
]}

机构：

[1] Wageningen Univ, Sub Dept Environm Technol, NL-6700 AA Wageningen, Netherlands

来源：

BIOMASS & BIOENERGY | 2013年 / 48卷

关键词：

Mixed culture fermentation; VFA; MCFA; OFMSW; Waste; Carboxylate; CLOSTRIDIUM-KLUYVERI; LIQUID FUELS; FATTY-ACIDS; SOLID-WASTE; HYDROLYSIS; DIGESTION; CELLULOSE; BIOMASS;

D O I：

10.1016/j.biombioe.2012.11.019

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this research we investigate a microbial production process to produce medium chain fatty acids (MCFAs) based on the organic fraction of municipal solid waste (OFMSW). In this microbial production process, called chain elongation, bacteria produce medium chain fatty acids (MCFAs) from ethanol and volatile fatty acids (VFAs). MCFAs could be used as new biomass based building blocks for the chemical and fuel industry. The objective of this article is to investigate whether chain elongation can be promoted during acidification of OFMSW by addition of ethanol. The results show that chain elongation can be promoted during acidification of OFMSW by addition of ethanol. However, the hydrolysis rate and the carboxylic acid yield of the OFMSW in reactors with ethanol additions were lower than the hydrolysis rate and the carboxylic acid yield than in reactors without ethanol additions. Further research is required to determine whether a combined chain elongation and acidification reactor or a separated reactor system is more advantageous for MCFA production from OFMSW. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：10 / 16

页数：7

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