The Co-construction Laboratory of Microbial Molecular Biology of Province and Ministry of Science and Technology, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, PR China.
Bioresour Technol. 2013 May;136:413-7. doi: 10.1016/j.biortech.2013.03.047. Epub 2013 Mar 18.
The purpose of this study was to investigate the potential of copper-iron bimetallic particles supported sulfate-reducing bacteria (SRB) in enhancing the reduction of Cu(2+) and Zn(2+) in effluent. The results showed that the copper-iron bimetallic particles can enhance Cu(2+) and Zn(2+) removal and the resistance of the sulfate-reducing bacteria towards metals toxicity, the inhibiting concentration of Cu(2+) and Zn(2+) for SRB was significantly increased (from 100 to 200 mg/L for Cu(2+) and 300 to 400 mg/L for Zn(2+)). The removal efficiencies of Cu(2+) and Zn(2+) (initial concentration 100 mg/L) were 98.17% and 99.67% in SRB-Cu/Fe system after 48 h, while only 29.83% Cu(2+), 90.88% Zn(2+) and 63.81% Cu(2+), 72.63% Zn(2+) were removed in the SRB and Cu/Fe system at the same condition.
本研究旨在探讨负载硫酸盐还原菌（SRB）的铜铁双金属颗粒增强废水中 Cu(2+)和 Zn(2+)还原的潜力。结果表明，铜铁双金属颗粒可增强 Cu(2+)和 Zn(2+)的去除效果，提高硫酸盐还原菌对金属毒性的抗性，Cu(2+)和 Zn(2+)的抑制浓度明显增加（Cu(2+)从 100mg/L 增加到 200mg/L，Zn(2+)从 300mg/L 增加到 400mg/L）。在相同条件下，48 h 后 SRB-Cu/Fe 系统中 Cu(2+)和 Zn(2+)（初始浓度 100mg/L）的去除率分别达到 98.17%和 99.67%，而在 SRB 和 Cu/Fe 系统中仅分别去除了 29.83%的 Cu(2+)、90.88%的 Zn(2+)、63.81%的 Cu(2+)和 72.63%的 Zn(2+)。
