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Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids
Published on: August 9, 2024
A continuous flow-through system with integration of electrosorption and peroxi-coagulation for efficient removal of
Weilu Yang1, Minghua Zhou2, Liang Ma2
1Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 511443, China; Key Laboratory of Pollution Process and Environmental Criteria (MOE), College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, PR China.
Abstract:
A flow-through reactor with integration of electrosorption (ES) and peroxi-coagulation (PC) processes was designed for organics removal. Impacts of key parameters (solution pH, flow rate, initial concentration of organics, applied voltage) on the removal efficiency of Orange II were explored. Under the optimized conditions, 93% removal efficiency and 1043 mg g-1 removal capacity of Orange II could be obtained with an energy consumption of 31.9 kWh m-3 order-1. Controlled experiments of ES for pollutants removal, and the detections of dissolved irons and the generated hydroxyl radicals (•OH) were conducted, demonstrating the coupling effect and contribution ratio of ES and PC for organics removal in this flow-through system. The spatiotemporal efficiency of the integrated flow-through system was more than 10 times of conventional ES system, providing more potential for practical application of wastewater treatment. The flow-through system was also verified to be advantageous for removal of other organic pollutants including 2,4-dichlorophenoxyacetic acid, phenol and methylene blue with high removal efficiencies. This study proved that the integrated flow-through process was an efficient, comparative and applicable method for wastewater treatment.
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