哈尔滨工业大学学报（英文版）2004，Vol.11Issue(1)：11-16,6.
Effect of Cu2+ concentration on hydrogen fermentation by mixed culture
Effect of Cu2+ concentration on hydrogen fermentation by mixed culture
摘要
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 (ECso) 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.关键词
hydrogen fermentation/anaerobic digestion/Cu2+/volatile fatty acidsKey words
hydrogen fermentation/anaerobic digestion/Cu2+/volatile fatty acids分类
资源环境引用本文复制引用
任南琪,丁杰,丁兰,刘敏,李永峰,包红旭..Effect of Cu2+ concentration on hydrogen fermentation by mixed culture[J].哈尔滨工业大学学报（英文版）,2004,11(1):11-16,6.基金项目
Sponsored by" 973" Fundamental Science Program of China ( Grant No. G2000026402 ) and "863" Project of China ( Grant No. 2001 AA515030). （ Grant No. G2000026402 ）
