[Effect of Fe2+ concentration on kinetics of biohydrogen production].
The effect of Fe2+ concentration ranging from 0 to 1500 mg/L on the kinetics of fermentative hydrogen production by mixed microbial culture was investigated. The results showed that, at 35 degrees C and initial pH 7.0, using glucose as substrate, hydrogen production potential and average hydrogen production rate increased with increasing Fe2+ concentration from 0 to 300 mg/L, with the maximum hydrogen production potential of 302.3 mL and maximum average hydrogen production rate of 30.0 mL/h being obtained at Fe2+ concentration of 300 mg/L. Hydrogen yield increased with increasing Fe2+ concentration from 0 to 350 mg/L, with the maximum hydrogen yield of 311.2 mL/g glucose being obtained at Fe2+ concentration of 350 mg/L. Modified Logistic model could describe the progress of cumulative hydrogen production in the batch tests successfully. Modified Han-Levenspiel model could describe the effect of Fe2+ concentrations on average hydrogen production rate successfully.
Wan
Wei
W
Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, China. oio68987045@yahoo.com.cn
Wang
Jian-long
JL
D001419:Bacteria / Q000378:metabolism*; D005285:Fermentation; D005296:Ferrous Compounds / Q000032:analysis*; D005947:Glucose / Q000737:chemistry / Q000378:metabolism; D006859:Hydrogen / Q000032:analysis* / Q000378:metabolism; D007700:Kinetics
D005296:Ferrous Compounds; D006859:Hydrogen; D005947:Glucose