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Published on: December 19, 2017
Treatment of acid mine drainage by sulfate reducing bacteria with iron in bench scale runs
He Bai1, Yong Kang, Hongen Quan
1School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
Abstract:
In order to treat acid mine drainage (AMD) effectively using sulfate-reducing bacteria (SRB) at high concentration of sulfate and heavy metals, Fe(0) was added to enhance the activity of SRB. When AMD was treated by SRB and Fe(0) at 25 °C, more than 61% of sulfate was removed and the effluent pH was improved from 2.75 to 6.20 during the operation. Cu(2+) was removed effectively with the removal efficiency at 99%, while only 86% of Fe(2+) was removed during the AMD treatment, without conspicuous change of Mn(2+) in the effluent in the process.
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