Effect of initial pH on thermophilic fermentative hydrogen production from cassava ethanol wastewater

被引：1

作者：

Luo G. ^{[1
,2
]}

Xie L. ^{[1
,2
]}

Zou Z. ^{[1
,2
]}

Zhou Q. ^{[1
,2
]}

机构：

[1] State Key Laboratory of Pollution Control and Resources Reuse, Tongji University

[2] UNEP-Institute of Environment for Sustainable Development, Tongji University

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2010年 / 38卷 / 07期

关键词：

Cassava ethanol wastewater; Fermentative hydrogen production; Initial pH;

D O I：

10.3969/j.issn.0253-374x.2010.07.017

中图分类号：

学科分类号：

摘要：

The effect of initial pH (4.0-10.0) on thermophilic fermentative hydrogen production from cassava ethanol wastewater was investigated in batch experiments. Results show maximum hydrogen product (383 mL) is obtained at initial pH 6.0 and the corresponding hydrogen yield is 70 mL·g-1. The total amount of VFA/ethanol and the proportion of acetic acid in the VFA increase with the increase of pH. The distribution of aqueous products is always dominated by butyrate. The heat-pretreatment at 90°C for 1h cannot completely inhibit the activities of methanogenic bacteria and homoacetogenic bacteria. Hydrogen consumption at different degrees was observed at initial pH 6.0-10.0, and methane was detected at initial pH 9.0-10.0 during the fermentative process. The degradation of substrates in cassava ethanol wastewater and fermentative products further demonstrate that the hydrogen is generated from the production of butyrate, resulted from the carbohydrate degradation.

引用

页码：1036 / 1040+1068

共 16 条

[1] Li Z., Wang H., Tang Z., Et al., Effects of pH value and substrate concentration on hydrogen production from the anaerobic fermentation of glucose, International Journal of Hydrogen Energy, 33, 24, (2008)
[2] Chu C., Li Y., Xu K., Et al., A pH and temperature phased two-stage process for hydrogen and methane production from food waste, International Journal of Hydrogen Energy, 33, 18, (2008)
[3] Massanet-Nicolau J., Dinsdale R., Guwy A., Hydrogen production from sewage sludge using mixed microflora inoculum: effect of pH and enzymatic pretreatment, Bioresource Technology, 99, 14, (2008)
[4] Luo G., Xie L., Zhou Q., Et al., Study on treatment of cassava ethanol wastewater in thermophilic anaerobic CSTR, China Water & Wastewater, 24, 9, (2008)
[5] Zhao Q., Yu H., Fermentative H<sub>2</sub> production in an upflow anaerobic sludge blanket reactor at various pH values, Bioresource Technology, 99, 5, (2008)
[6] Liu C., Zhang J., Zhao Y., Et al., Effects of initial pH on hydrogen production from acid pretreated municipal sudge, Environmental Science, 29, 9, (2008)
[7] Wang J., Wan W., Comparison of different pretreatment methods for enriching hydrogen-producing bacteria from digested sludge, International Journal of Hydrogen Energy, 33, 12, (2008)
[8] Herbert D., Philipps P.J., Strange R.E., Carbohydrate analysis, Methods Enzymol, 5 B, (1971)
[9] Lowry O.H., Rosebrough N.J., Farr A.L., Et al., Protein measurement with the Folin phenol reagent, Journal of Biological. Chemistry, 193, 1, (1951)
[10] Lay J.J., Lee Y.J., Noike T., Feasibility of biological hydrogen production from organic fraction of municipal solidwaste, Water Research, 33, 11, (1999)

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