An overview of heavy metal removal from wastewater using magnetotactic bacteria |
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| Authors: | Imran Ali Changsheng Peng Zahid M Khan Iffat Naz Muhammad Sultan |
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| Affiliation: | 1. Department of Environmental Engineering, College of Environmental Science and Engineering, Ocean University of China, Qingdao, China;2. The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, China;3. Department of Environmental Engineering, School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, China;4. Department of Agricultural Engineering, Bahauddin Zakariya University, Bosan Road, Multan, Pakistan;5. Department of Biology, Qassim University, Buraidah, Kingdom of Saudi Arabia |
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| Abstract: | Considering the increase in water contamination by heavy metal discharge, water quality experts are focusing on innovative future technologies for wastewater treatment. There are a number of physical, chemical and biological processes for acquiring high‐quality effluents; however, these treatment technologies have shown some limitations regarding their specific pollutant removal efficiencies, vulnerability to environmental pollutants, higher cost and energy requirements, excessive sludge volume and toxicity issues. Therefore, this review/concept paper focuses on the application of magnetotactic bacteria (MTB) in the removal of heavy metal from wastewater and also proposes a model application of MTB‐based treatment process. The unique property of the MTB is to move along the periphery of the applied external magnetic fields due to nano sized magnetosomes (MS). MS are basically the biomineral crystals of either magnetite (Fe3O4) or greigite (Fe3S4) with a size range of 30–120 nm. Moreover, challenging aspects concerning MTB employment in the removal of heavy metal from wastewater also are discussed in detail for the consideration of experts who are involved in the development of new treatment technologies or for retrofications of existing processes. © 2018 Society of Chemical Industry |
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| Keywords: | magnetotactic bacteria (MTB) magnetosomes (MS) heavy metal removal water pollution magnetite greigite |
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