Abstract：
:The autotrophic hydrogen reduction of perchlorate was investigated in batch modes in a proton-exchange membrane bioelectrochemical reactor. The phylogenic characterization of hydrogen-autotrophic perchlorate-reducing cultures in the cathode cell mainly included the genera Aureibacter tunicatorum, Fulvivirga kasyanovii, Thermotalea metallivorans (T), bacterium WHC2-6, and Thauera sp. Q20-C. The suitable H2SO4 supplement concentration was identified to be between 0.04 and 0.05 mol L(-1) in the anode cell. The perchlorate reduction was affected by the sludge concentration in the cathode cell, current intensity, and initial perchlorate concentration. The removal efficiency of perchlorate positively correlated with the current intensity, and the current intensity of 20, 40, 50, and 60 mA corresponded to removal efficiencies of 95.03, 96.29, 97.56 and 98.99%, respectively. When the current intensity was sufficient for hydrogen production, the kinetics of the perchlorate reduction conformed to a zero-order kinetics model, and the maximum specific substrate utilization rates for perchlorate (Vmax) ranged from 5.52 to 14.34 mg ClO4(-) g(-1) volatile suspended solid (VSS) h(-1).
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Wang Z,Gao M,Zhang Y,She Z,Ren Y,Wang Z,Zhao Cdoi
10.1016/j.jenvman.2014.04.003subject
Has Abstractpub_date
2014-09-01 00:00:00pages
10-6eissn
0301-4797issn
1095-8630pii
S0301-4797(14)00183-2journal_volume
142pub_type
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