Hydrogen production from rice winery wastewater in an upflow anaerobic reactor by using mixed anaerobic cultures
Hydrogen production from rice winery wastewater in an upflow anaerobic reactor by using mixed anaerobic cultures
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DOI：
10.1016/s0360-3199(02)00073-3
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发表时间：
2002-11-01
影响因子：
7.2
通讯作者：
Zhang, HS
中科院分区：
文献类型：
--
作者：
Yu, HQ;Zhu, ZH;Zhang, HS
用混合菌群对高强度米酒废水进行厌氧酸化连续产氢试验。在3.0-1上流式反应器中，考察水力停留时间（HRT） （2-24 h）、废水中化学需氧量（COD）浓度（14-36 g COD/1）、pH（4.5-6.0）和温度（20-55℃）对废水产氢的影响。在所有测试条件下产生的沼气主要由氢气（53-61%）和二氧化碳（37-45%）组成，但不含可检测到的甲烷。比产氢率随废水浓度和温度的升高而升高，但随HRT的升高而降低。在HRT为2 h、COD为34 g/l、pH为5.5、温度为55℃的条件下，产氢速率为9.331 h -2/g VSS d。产氢量在1.37 ~ 2.14 mol/mol-己糖之间。除了醋酸盐、丙酸盐和丁酸盐外，乙醇也作为水产物存在于流出物中。这些化合物在出水中的分布对废水浓度、pH和温度较为敏感，而对HRT不太敏感。这种上流式反应器被证明是一种有前途的生物系统，通过混合厌氧培养从高强度废水中产氢。(C) 2002年国际氢能协会。Elsevier Science Ltd.出版。版权所有。
Continuous production of hydrogen from the anaerobic acidogenesis of a high-strength rice winery wastewater by a mixed bacterial flora was demonstrated. The experiment was conducted in a 3.0-1 upflow reactor to investigate individual effects of hydraulic retention time (HRT) (2-24 h), chemical oxygen demand (COD) concentration in wastewater (14-36 g COD/1), pH (4.5-6.0) and temperature (20-55degreesC) on bio-hydrogen production from the wastewater. The biogas produced under all test conditions was composed of mostly hydrogen (53-61%) and carbon dioxide (37-45%), but contained no detectable methane. Specific hydrogen production rate increased with wastewater concentration and temperature, but with a decrease in HRT. An optimum hydrogen production rate of 9.331 H-2/g VSS d was achieved at an HRT of 2 h, COD of 34 g/l, pH 5.5 and 55degreesC. The hydrogen yield was in the range of 1.37-2.14 mol/mol-hexose. In addition to acetate, propionate and butyrate, ethanol was also present in the effluent as an aqueous product. The distribution of these compounds in the effluent was more sensitive to wastewater concentration, pH and temperature, but was less sensitive to HRT. This upflow reactor was shown to be a promising biosystem for hydrogen production from high-strength wastewaters by mixed anaerobic cultures. (C) 2002 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.