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Purification of chromium-containing wastewater using symmetric anion-exchange membrane flow-electrode capacitive deionization
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Han-long LIU1, 2, Chun-peng ZHANG1, 2, *, Si-yao ZHANG1, 2, Yang ZHANG1, 2, Xue-zhi REN1, 2, Ya-lin DU1, 2, Shuang ZHANG1, 2, Yu-fan MA1, Yu-yang WANG1, 2
China Environmental Science | 2025, 45(7) : 3799 - 3806
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China Environmental Science | 2025, 45(7): 3799-3806
• Water Pollution Control •
Purification of chromium-containing wastewater using symmetric anion-exchange membrane flow-electrode capacitive deionization
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Han-long LIU1, 2, Chun-peng ZHANG1, 2, *, Si-yao ZHANG1, 2, Yang ZHANG1, 2, Xue-zhi REN1, 2, Ya-lin DU1, 2, Shuang ZHANG1, 2, Yu-fan MA1, Yu-yang WANG1, 2
Affiliations
  • 1.National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun 130061, China
  • 2.College of New Energy and Environment, Jilin University, Changchun 130021, China
Published: 2025-07-20
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A fully symmetric "dual-anion membrane" flow-electrode capacitive deionization (SFCDI) device was developed for treating wastewater containing hexavalent chromium (Cr(Ⅵ)). By employing dual anion-exchange membranes and operating in a short-circuit discharge mode, efficient Cr(Ⅵ) removal can be achieved without the need for high concentration background ions. Results showed that, a key feature of this configuration is its ability to prevent Cr3+ back-diffusion and total chromium concentration rebound, which are common issues in traditional FCDI systems using cation-exchange membranes. Under conditions of 1.2V applied voltage and an initial pH of 5.0, the SFCDI reduced the Cr(Ⅵ) concentration from 50mg/L to 0.41mg/L within 150minutes, achieving a total chromium removal efficiency of 97.55% with an energy consumption of only 0.12kWh/m3. Compared to traditional FCDI, SFCDI significantly improved the total chromium removal efficiency while effectively preventing Cr3+ backflow. Further research systematically analyzed the effects of voltage, activated carbon content, pH, and coexisting anions on performance and demonstrated the applicability and stability of SFCDI in continuous operation and actual electroplating wastewater treatment. Within 180minutes, the removal rate of Cr(Ⅵ) in actual electroplating wastewater reached 97.68%, showcasing its potential as a green, efficient, and low-energy solution.

symmetric anion exchange membrane design  /  flow-electrode capacitive deionization  /  hexavalent chromium  /  chromium-contaminated wastewater  /  electroplating wastewater
刘翰隆, 张春鹏, 张思瑶, 张洋, 任学志, 杜雅琳, 张爽, 马语璠, 王彧洋. 双阴膜流动电极电容去离子净化含铬废水. 中国环境科学, 2025 , 45 (7) : 3799 -3806 .
Han-long LIU, Chun-peng ZHANG, Si-yao ZHANG, Yang ZHANG, Xue-zhi REN, Ya-lin DU, Shuang ZHANG, Yu-fan MA, Yu-yang WANG. Purification of chromium-containing wastewater using symmetric anion-exchange membrane flow-electrode capacitive deionization[J]. China Environmental Science, 2025 , 45 (7) : 3799 -3806 .
Appendix
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Year 2025 volume 45 Issue 7
81
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Article Info
  • Receive Date：2024-12-12
  • Online Date：2026-10-08
  • Published：2025-07-20
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  • Received：2024-12-12
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Affiliations
    1.National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun 130061, China
    2.College of New Energy and Environment, Jilin University, Changchun 130021, China
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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