Preparation and performance of electrocatalytic carbon membranes for treating micro-polluted water

YU Fang-peng; PAN Zong-lin; LI Lin; SONG Cheng-wen; WANG Tong-hua

doi:10.1016/S1872-5805(22)60610-3

Volume 37 Issue 3

Jun. 2022

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YU Fang-peng, PAN Zong-lin, LI Lin, SONG Cheng-wen, WANG Tong-hua. Preparation and performance of electrocatalytic carbon membranes for treating micro-polluted water. New Carbon Mater., 2022, 37(3): 615-624. doi: 10.1016/S1872-5805(22)60610-3

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YU Fang-peng, PAN Zong-lin, LI Lin, SONG Cheng-wen, WANG Tong-hua. Preparation and performance of electrocatalytic carbon membranes for treating micro-polluted water. New Carbon Mater., 2022, 37(3): 615-624. doi: 10.1016/S1872-5805(22)60610-3

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Preparation and performance of electrocatalytic carbon membranes for treating micro-polluted water

doi: 10.1016/S1872-5805(22)60610-3

1.
State Key Laboratory of Fine Chemicals, Laboratory of Carbon membrane and Porous Carbon Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
2.
School of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China

More Information

Corresponding author: WANG Tong-hua, Professor. E-mail: wangth@dlut.edu.cn
Received Date: 2021-06-08
Rev Recd Date: 2021-07-22

Available Online: 2022-04-20

Publish Date: 2022-06-01

Abstract

Abstract

Porous carbon membranes (PCMs) with three functions of adsorption, electrocatalytic oxidation and membrane filtration were prepared from coconut shell activated carbon using carboxymethyl cellulose (CMC,10 wt%) and benzoxazine resin (BR, 10 wt%-40 wt%) as the binder components. The morphology and microstructure of PCMs were characterized by SEM, XRD, Raman and nitrogen adsorption. An electrocatalytic membrane reactor (ECMR) was constructed using PCMs as the anode materials to investigate their water treatment performance. Results show that the PCMs have well-developed hierarchical macro, meso and micropores, whose macropore size decreases with the particle size of the activated carbon. The mechanical strength and electrical conductivity of the PCMs increased with BR content and carbonization temperature. The water flux decreased as the average particle size of the activated carbon decreased and the iodine value decreased with decreasing BR content. The PCM performed best with an excellent comprehensive performance in adsorption, electrocatalytic oxidation and filtration when it was prepared from an activated carbon of average particle size of 37.9 μm using a BR content of 30 wt% and a carbonization temperature of 950 ℃. For the micro-polluted Lingshui River water in Dalian, the removal of COD, UV254, turbidity and bacteria with the ECMR reached 94.3%, 90.5%, 96.3% and 100%, respectively, and heavy metal ions (Pb²⁺, Cu²⁺, Zn²⁺, Ni²⁺ ) were removed to levels below the detection limits, and the anti-fouling performance was good. The excellent performance in treating micro-polluted water is ascribed to the combined effects of adsorption, electrocatalytic oxidation and filtration.
- Triple function electrocatalytic carbon membrane,
- Electrocatalytic membrane reactor,
- Organics,
- Micro-polluted water

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References(26)

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