Abstract
Industrial waste/wastewater possesses a severe environmental threat to aquatic life. But, it also provides good potential sources for the removal and recovery of precious metal using various treatment processes. Several conventional treatment technologies such as physical, chemical, and biological (aerobic/anaerobic) methods used in the industries are an energy-consuming process and also expensive. Bioelectrochemical treatment system provides a novel platform to remove organic matter as well as recovery of heavy metal ions from various wastewater process streams. In bioelectrochemical treatment, organic matter is bioremediated by electroactive biofilms and coupled to cathode reduction to remove metal ions from the wastewater. This review summarizes the research on bioelectrochemical systems for bioremediation of organic matter as well as recovery of heavy metal ions from the wastewater. There are two different methods being discussed: firstly, removal of organic matters using different bioelectrochemical treatment systems; secondly, recovery of metal ions using abiotic and biotic cathodes in the system.
Published Version
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