Effect of extrinsic lactic acid on fermentative hydrogen production

被引：68

作者：

Baghchehsaraee, Bita ^{[1
]}

Nakhla, George ^{[1
]}

Karamanev, Dimitre ^{[1
]}

Margaritis, Argyrios ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Chem & Biochem Engn, London, ON N6A 5B9, Canada

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Fermentative hydrogen production; Lactic acid; Batch fermentation; Kinetics; OPTIMIZATION; WASTES; MODEL;

D O I：

10.1016/j.ijhydene.2009.01.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper we report the effect of extrinsic lactic acid on hydrogen production from a starch-containing medium by a mixed culture. Study of the effect of addition of four metabolites, namely ethanol, lactic acid, butyric acid and acetic acid illustrated that lactic acid had a positive effect on both the maximum hydrogen production and hydrogen production rate. The addition of 10 mM lactic acid to a batch containing starch increased the hydrogen production rate and hydrogen production yield from 4.31 to 8.23 mL/h and 5.70 to 9.08 mmol H-2/g starch, respectively. This enhancement in hydrogen production rate and yield was associated with a shift from acetic acid and ethanol formation to formation of butyric acid as the predominant metabolite. The increase in hydrogen production yield was attributed to the increase in the available residual NADH for hydrogen production. When lactic acid was used as the sole carbon source, no significant hydrogen production was observed. Crown Copyright (C) 2009 Published by Elsevier Ltd on behalf of International Association for Hydrogen Energy. All rights reserved.

引用

页码：2573 / 2579

页数：7

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