Abstract
The biological treatment of recalcitrant wastewaters in microbial fuel cells (MFCs) rather than chemical, physical, and advanced oxidation processes are low cost and environmentally friendly processes. In this study, sulphate-reducing micro-organisms in MFC anodic chamber were fed with olive oil mill (OMW) and molasses wastewater at various dilution rates for simultaneous wastewater treatment and energy production. A power density of 31 ± 5 W/m2 was achieved at a 1:65 dilution rate (v: v) for molasses wastewater in the presence of sulphate-reducing bacteria. In these conditions, the highest voltage was 990 mV with influent chemical oxygen demand (COD) of 1.200 mg/l. The total COD, sulphate, and colour removal efficiencies were 53.2%, 52.7%, and 41.1%, respectively. The overarching goal of this study was to develop a better understanding of the removal of emerging pollutants in textile, olive mill, and molasses wastewater using microbial fuel cells.
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