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Effect of Cu²⁺ concentration on hydrogen fermentation

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【Author】 by mixed culture REN Nan-qi~1, DING Jie~1, DING Lan~(1,2), LIU Min~1, LI Yong-feng~1, BAO Hong-xu~1 (1. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; 2. College of Chemistry, Jilin University, Changchun 130023, China)

【机构】 School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China,School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China,School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China； College of Chemistry, Jilin University, Changchun 130023, China,School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China,School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China,School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China；

【Abstract】 The results of the study on the effect of Cu²⁺ concentration on hydrogen production using a glucose solution and mixed microorganisms from a 9 2 L laboratory-scale digester operated at 35 ℃ indicated the productions of hydrogen, volatile fatty acids （VFAs）, ethanol and biogas were inhibited by the added Cu²⁺ which caused a reduction in the glucose degradation efficiency. The specific yields of hydrogen, ethanol and acetate decreased with increased Cu²⁺ concentration in the mixed microorganisms. When the Cu²⁺ concentration in the mixed microorganisms was almost an constant, the specific yields of hydrogen, ethanol and acetate were very similar. A 50% inhibition of hydrogen yield (EC₅₀) occurred at a Cu²⁺ dosage of 0 50 mg/L in the present investigation. Cu²⁺ in the external environment is accumulated in the mixed microorganisms. The Cu²⁺ speciation, using a sequential extraction technique, showed that the Cu²⁺ was present mainly bound to organic sites in the mixed microorganisms in the present investigation.更多还原

【关键词】 hydrogen fermentation； anaerobic digestion； Cu²⁺； volatile fatty acids；
【Key words】 hydrogen fermentation； anaerobic digestion； Cu²⁺； volatile fatty acids；

【基金】 Sponsoredby“973”FundamentalScienceProgramofChina (GrantNo .G2 0 0 0 0 2 64 0 2 )and“863”ProjectofChina (GrantNo.2 0 0 1AA5 15 0 3 0 )

【文献出处】 Journal of Harbin Institute of Technology ,哈尔滨工业大学学报(英文版) , 编辑部邮箱 ,2004年01期

【分类号】X172
【被引频次】3
【下载频次】111

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Effect of Cu2+ concentration on hydrogen fermentation

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Effect of Cu²⁺ concentration on hydrogen fermentation