Recent advances on electroactive CNT-based membranes for environmental applications: The perfect match of electrochemistry and membrane separation |
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| Institution: | 1. Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China;2. Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China;3. Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China;4. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;5. Institute of Biosciences, Freiberg University of Mining and Technology, Freiberg 09599, Germany;6. Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;1. Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China;2. Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai 200092, China;3. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;4. Institute of Biosciences, Freiberg University of Mining and Technology, Freiberg 09599, Germany;1. Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China;2. Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China;3. Institute of Functional Materials, Donghua University, Shanghai 201620, China;1. Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China;2. Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai, 200092, China;3. College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, China;4. Research Center for Analysis & Measurement, Donghua University, 201620, Shanghai, China;1. Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China;2. Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai, 200092, China;3. Instrumental Analysis Center, Donghua University, Shanghai, 201620, China;4. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China;5. Institute of Biosciences, Freiberg University of Mining and Technology, Freiberg, 09599, Germany;1. Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China;2. Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai, 200092, China;3. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China;4. Institute of Biosciences, Freiberg University of Mining and Technology, Freiberg, 09599, Germany;1. State Key Laboratory of Separation Membranes and Membrane Processes / National Center for International Joint Research on Membrane Science and Technology, Tianjin, 300387, PR China;2. School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, PR China;3. Textile Engineering Department, NED University of Engineering and Technology, Karachi, Pakistan;4. School of Textiles Science and Engineering, Tiangong University, Tianjin, 300387, PR China;5. Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa Science Campus, Florida, 1710, Johannesburg, South Africa;6. RWTH Aachen University, Aachener Verfahrenstechnik-Chemical Process Engineering, Forckenbeckstr. 51, 52074, Aachen, Germany;7. Department of Chemistry, Faculty of Science and Engineering, University of Eswatini, Swaziland |
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| Abstract: | Global climate change, growing population, and environmental pollution underscore the need for a greater focus on providing advanced water treatment technologies. Although electrochemical based-processes are becoming promising solutions, they still face challenges owing to mass transport and upscaling which hinder the exploitation of this technology. Electrode design and reactor configuration are key factors for achieving operational improvements. The electroactive membrane has proven to be a breakthrough technology integrating electrochemistry and membrane separation with an enhanced mass transport by convection. In this review article, we discuss recent progress in environmental applications of electroactive membranes with particular focus on those composed of carbon nanotubes (CNT) due to their intriguing physicochemical properties. Their applications in degradation of refractory contaminants, detoxification and sequestration of toxic heavy metal ions, and membrane fouling alleviations are systematically reviewed. We then discuss the existing limitations and opportunities for future research. The development of advanced electroactive systems depends on interdisciplinary collaborations in the areas of materials, electrochemistry, membrane development, and environmental sciences. |
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| Keywords: | Electroactive membranes Carbon nanotubes Organic pollutants Heavy mental ions Antifouling |
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