SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 59 ›› Issue (7): 222-230.DOI: 10.1016/j.cjche.2023.02.011

• Full Length Article • 上一篇    下一篇

Mass-producible low-cost flexible electronic fabrics for azo dye wastewater treatment by electrocoagulation

Chaoyi Yin1, Jingyuan Ma1, Jian Qiu2, Ruifang Liu1, Long Ba1   

  1. 1. State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering Southeast University, Nanjing 210096, China;
    2. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
  • 收稿日期:2022-08-16 修回日期:2023-02-01 出版日期:2023-07-28 发布日期:2023-10-14
  • 通讯作者: Long Ba,E-mail:balong@seu.edu.cn
  • 基金资助:
    We acknowledge the financial support from the National Natural Science Foundation of China (31872901) and Major State Basic Research Development Program of China (2016YFA0501602).

Mass-producible low-cost flexible electronic fabrics for azo dye wastewater treatment by electrocoagulation

Chaoyi Yin1, Jingyuan Ma1, Jian Qiu2, Ruifang Liu1, Long Ba1   

  1. 1. State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering Southeast University, Nanjing 210096, China;
    2. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
  • Received:2022-08-16 Revised:2023-02-01 Online:2023-07-28 Published:2023-10-14
  • Contact: Long Ba,E-mail:balong@seu.edu.cn
  • Supported by:
    We acknowledge the financial support from the National Natural Science Foundation of China (31872901) and Major State Basic Research Development Program of China (2016YFA0501602).

摘要: Electrocoagulation is progressively becoming an ecologically friendly water treatment method owing to its lack of secondary pollution, high active ingredient concentration, high treatment effectiveness, simple equipment, and simplicity of automated control implementation. Herein, electrocoagulation is offered as a method for treating wastewater containing azo dyes using a revolutionary flexible electronic fabric that can be mass-producible at a reasonable price. A computer-controlled machine embroiders 316L stainless steel fiber (316L SSF) onto an insulating fabric to manufacture a flexible electronic device of cathode and anode with a monopolar arrangement on the fabric surface. Using methyl orange (MO) solution to simulate azo dye wastewater, the decolorization rate of 500 ml MO reached 99.25% under the conditions of 50 mg·L-1 initial mass concentration, 120 min electrolysis time, 15 mA·g-1 current density, 1 cm electrode spacing, 0.1 mol·L-1 NaCl, pH 7.6, 200 r·min-1 rotational speed of the stirrer, and 22-25 ℃ room temperature. In addition, it is feasible to embroider flexible electronic fabrics with varied sizes and numbers of electrodes based on the amount of treated sewage to increase the degradation rate, which has significant practical application value.

关键词: Flexible electronic fabric, 316L Stainless steel fiber, Embroidery, Electrocoagulation, Wastewater treatment

Abstract: Electrocoagulation is progressively becoming an ecologically friendly water treatment method owing to its lack of secondary pollution, high active ingredient concentration, high treatment effectiveness, simple equipment, and simplicity of automated control implementation. Herein, electrocoagulation is offered as a method for treating wastewater containing azo dyes using a revolutionary flexible electronic fabric that can be mass-producible at a reasonable price. A computer-controlled machine embroiders 316L stainless steel fiber (316L SSF) onto an insulating fabric to manufacture a flexible electronic device of cathode and anode with a monopolar arrangement on the fabric surface. Using methyl orange (MO) solution to simulate azo dye wastewater, the decolorization rate of 500 ml MO reached 99.25% under the conditions of 50 mg·L-1 initial mass concentration, 120 min electrolysis time, 15 mA·g-1 current density, 1 cm electrode spacing, 0.1 mol·L-1 NaCl, pH 7.6, 200 r·min-1 rotational speed of the stirrer, and 22-25 ℃ room temperature. In addition, it is feasible to embroider flexible electronic fabrics with varied sizes and numbers of electrodes based on the amount of treated sewage to increase the degradation rate, which has significant practical application value.

Key words: Flexible electronic fabric, 316L Stainless steel fiber, Embroidery, Electrocoagulation, Wastewater treatment