Abstract
In this study, four dual-chambered microbial fuel cells (MFC1-4) were constructed and filled with different ratios of mature fine tailings and oil sands process-affected water to test the feasibility of MFCs to simultaneously generate electricity and treat oil sands tailings. After 800 h of operation, the maximum voltage was observed in MFC4 at 0.726 V with 1.2kΩ external resistance loaded. The maximum power density reached 392 ± 15 mW/m(2) during the 1,700 h of MFC4 operation. With continuous electricity generation, MFC4 removed 27.8% of the total COD, 81.8% of the soluble COD and 32.9% of the total acid extractable organics. Moreover, effective removal of eight heavy metals, includes 97.8% of (78)Se, 96.8% of Ba, 94.7% of (88)Sr, 81.3% for (66)Zn, 77.1% of (95)Mo, 66.9% of (63)Cu, 44.9% of (53)Cr and 32.5% of Pb, was achieved.
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