title: Bioremediation of copper-containing wastewater by sulfate reducing bacteria coupled with iron.
abstract: In order to treat copper-containing wastewater effectively using sulfate reducing bacteria (SRB), iron (Fe(0)) was added to enhance the activity of SRB. The SRB system and the SRB + Fe(0) system were operated under continuous operation. The sulfate reduction efficiency of the SRB + Fe(0) system was twice as much as that of the SRB system with the sulfate loading rate at 125  mg L(-1) h(-1). The effect of COD/SO4(2-) on sulfate reduction indicates an enhanced activity of SRB by adding Fe(0). 99% of total sulfate was deducted in both systems at pH 4.0-7.0, and temperature slightly influenced the removal of sulfate in the SRB + Fe(0) system. In the copper-containing wastewater treatment, the SRB + Fe(0) system shows a better performance since sulfate removal in this system was higher than the SRB system, and the removal ratio of Cu(2+) was held above 95% in SRB + Fe(0) system at all influent Cu(2+) concentrations.
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
authors: He
authors: H
authors: Bai
authors: Yong
authors: Y
authors: Kang
authors: Hongen
authors: H
authors: Quan
authors: Yang
authors: Y
authors: Han
authors: Jiao
authors: J
authors: Sun
authors: Ying
authors: Y
authors: Feng
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002852:Chromatography, Ion Exchange; D003300:Copper / Q000378:metabolism*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D007501:Iron / Q000378:metabolism*; D010084:Oxidation-Reduction; D013431:Sulfates / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D013431:Sulfates; D014874:Water Pollutants, Chemical; D003300:Copper; D007501:Iron
keywords: Copper-containing wastewater; Heavy metal; Iron; Sulfate reducing bacteria