Effect of hydrogen and carbon dioxide on carboxylic acids patterns in mixed culture fermentation

被引：56

作者：

Arslan, D. ^{[1
,2
]}

Steinbusch, K. J. J. ^{[2
]}

Diels, L. ^{[1
]}

De Wever, H. ^{[1
]}

Buisman, C. J. N. ^{[2
]}

Hamelers, H. V. M. ^{[2
]}

机构：

[1] VITO Flemish Inst Technol Res Separat & Convers T, B-2400 Mol, Belgium

[2] Wageningen Univ, Subdept Environm Technol, NL-6708 HD Wageningen, Netherlands

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 118卷

关键词：

Hydrogen; Carbon dioxide; Headspace; Volatile fatty acids; Organic waste; ACIDOGENIC FERMENTATION; BIOHYDROGEN PRODUCTION; WASTE; DEGRADATION; COMMUNITIES; INHIBITION; HYDROLYSIS; INDUSTRIAL; BIOFUELS; METHANE;

D O I：

10.1016/j.biortech.2012.05.003

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study investigated the carboxylate spectrum from mixed culture fermentation of three organic waste streams after supplying 2 bar hydrogen and carbon dioxide or a mixture of these two gases to the headspace. Under any modified headspace, propionate production was ceased and butyrate, caproate and the total carboxylate concentrations were higher than in the reactors with N-2 headspace (control). Production of one major compound was achieved under hydrogen and carbon dioxide mixed headspace after 4 weeks of incubation. Both the highest acetate concentration (17.4 g COD/I) and the highest fraction (87%) were observed in reactors with mixed hydrogen and carbon dioxide headspace independent of the substrate used. In the control reactor, acetate made up maximum 67% of the total products. For other products, the highest concentration and fraction were seldom observed together. Selective butyrate production reaching a 75% fraction was found under the carbon dioxide headspace on the carbohydrate rich waste. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

引用

页码：227 / 234

页数：8

共 35 条

[1] Waste to bioproduct conversion with undefined mixed cultures: the carboxylate platform [J].