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Pulsed hydraulic-pressure-responsive self-cleaning membrane

Author

Listed:
  • Yang Zhao

    (Nanjing University)

  • Yuna Gu

    (Nanjing University)

  • Bin Liu

    (Nanjing University)

  • Yujie Yan

    (Nanjing University)

  • Chao Shan

    (Nanjing University
    Nanjing University)

  • Jian Guo

    (Nanjing University)

  • Shantao Zhang

    (Nanjing University)

  • Chad D. Vecitis

    (Harvard University)

  • Guandao Gao

    (Nanjing University
    Nanjing University)

Abstract

Pressure-driven membranes is a widely used separation technology in a range of industries, such as water purification, bioprocessing, food processing and chemical production1,2. Despite their numerous advantages, such as modular design and minimal footprint, inevitable membrane fouling is the key challenge in most practical applications3. Fouling limits membrane performance by reducing permeate flux or increasing pressure requirements, which results in higher energetic operation and maintenance costs4–7. Here we report a hydraulic-pressure-responsive membrane (PiezoMem) to transform pressure pulses into electroactive responses for in situ self-cleaning. A transient hydraulic pressure fluctuation across the membrane results in generation of current pulses and rapid voltage oscillations (peak, +5.0/−3.2 V) capable of foulant degradation and repulsion without the need for supplementary chemical cleaning agents, secondary waste disposal or further external stimuli3,8–13. PiezoMem showed broad-spectrum antifouling action towards a range of membrane foulants, including organic molecules, oil droplets, proteins, bacteria and inorganic colloids, through reactive oxygen species (ROS) production and dielectrophoretic repulsion.

Suggested Citation

  • Yang Zhao & Yuna Gu & Bin Liu & Yujie Yan & Chao Shan & Jian Guo & Shantao Zhang & Chad D. Vecitis & Guandao Gao, 2022. "Pulsed hydraulic-pressure-responsive self-cleaning membrane," Nature, Nature, vol. 608(7921), pages 69-73, August.
    • Handle: RePEc:nat:nature:v:608:y:2022:i:7921:d:10.1038_s41586-022-04942-4
    DOI: 10.1038/s41586-022-04942-4
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    Cited by:

    1. Wei Fan & Ruixin Lei & Hao Dou & Zheng Wu & Linlin Lu & Shujuan Wang & Xuqing Liu & Weichun Chen & Mashallah Rezakazemi & Tejraj M. Aminabhavi & Yi Li & Shengbo Ge, 2024. "Sweat permeable and ultrahigh strength 3D PVDF piezoelectric nanoyarn fabric strain sensor," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Zhuomin Zhang & Xuemu Li & Zehua Peng & Xiaodong Yan & Shiyuan Liu & Ying Hong & Yao Shan & Xiaote Xu & Lihan Jin & Bingren Liu & Xinyu Zhang & Yu Chai & Shujun Zhang & Alex K.-Y. Jen & Zhengbao Yang, 2023. "Active self-assembly of piezoelectric biomolecular films via synergistic nanoconfinement and in-situ poling," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. Jinxin Liu & Qinghao Jin & Junfeng Geng & Jianxin Xia & Yanhong Wu & Huiying Chen, 2023. "Fast Capture and Efficient Removal of Bloom Algae Based on Improved Dielectrophoresis Process," IJERPH, MDPI, vol. 20(1), pages 1-12, January.

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