Biohydrogen production from molasses by anaerobic fermentation with a pilot-scale bioreactor system
Biohydrogen production from molasses by anaerobic fermentation with a pilot-scale bioreactor system
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DOI：
10.1016/j.ijhydene.2006.02.011
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发表时间：
2006-12-01
影响因子：
7.2
通讯作者：
Liu, Shirui
中科院分区：
文献类型：
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作者：
Ren, Nanqi;Li, Jianzheng;Liu, Shirui
在连续流厌氧发酵反应器（可用体积为 1.48 m(3)）中进行了为期 200 多天的生物氢生产中试规模研究。生物制氢反应器（HBR）系统以糖蜜为底物，在有机负荷率（OLR）为3.11-85.57 kg COD/m(3)反应器/d（COD：化学需氧量）下运行。在 3.11-68.21 kgCOD/m(3) d 范围内，沼气和氢气产量均随着 OLR 的增加而增加，但在高 OLR（68.21-85.57 kg COD/m(3) 反应器/d）时下降。沼气主要由CO2和H-2组成，沼气中H-2的含量为40%～52%。反应器中获得的最大产氢率为5.57 m(3) H-2/m(3)反应器/d，比产氢率为0.75 m(3) H-2/kg MLVSS/d。氢气产率达到26.13 mol/ka COD，在35-55 kg COD/m(3)反应器/d的OLR范围内去除。此外，还发现氢气产量受到液相中乙醇和乙酸盐存在的影响，并且由于通过发酵途径调节NAD+/(NADH+H+)，当乙醇与乙酸盐的比率接近1时，产氢率出现最大。乙醇型发酵有利于产氢。 (c) 2006 年国际氢能协会。由爱思唯尔有限公司出版。保留所有权利。
A pilot-scale study of biohydrogen production was performed in a continuous flow anaerobic fermentation reactor (with an available volume of 1.48 m(3)) for over 200 days. The hydrogen bio-producing reactor (HBR) system was operated under the organic loading rates (OLR) of 3.11-85.57 kg COD/m(3) reactor/d (COD: chemical oxygen demand) with molasses as the substrate. Both biogas and hydrogen yields increased with OLR at the range of 3.11-68.21 kgCOD/m(3) d, but decreased at high OLR (68.21-85.57 kg COD/m(3) reactor/d). The biogas was mainly composed of CO2 and H-2 with the percentage of H-2 ranging from 40% to 52% in biogas. A maximum hydrogen production rate of 5.57 m(3) H-2/m(3) reactor/d, with a specific hydrogen production rate of 0.75 m(3) H-2/kg MLVSS/d, was obtained in the reactor. The hydrogen yield reached 26.13 mol/ka CODremoved within OLR range of 35-55 kg COD/m(3)reactor/d. In addition, it was found that the hydrogen yield was affected by the presence of ethanol and acetate in the liquid phase, and the maximum hydrogen production rate occurred while the ratio of ethanol to acetate was close to 1, due to the adjustment of NAD+/(NADH + H+) through fermentation pathways. Ethanol-type fermentation was favorable for hydrogen production. (c) 2006 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.