A sacrificial protective layer as fouling control strategy for nanofiltration in water treatment

Sihang Li; Huanna Meng; Haihua Wang; Johannes S. Vrouwenvelder; Zhenyu Li

doi:10.1016/j.watres.2022.118554

A sacrificial protective layer as fouling control strategy for nanofiltration in water treatment

Sihang Li, Huanna Meng, Haihua Wang, Johannes S. Vrouwenvelder, Zhenyu Li

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

High-performance nanofiltration (NF) membrane with super antifouling capability as well as reusability is highly desired in water treatment. A new antifouling strategy by a coating-decoating-recoating cycle was investigated for effective removal of fouling and restoring the original membrane performance. The functional membrane surface was fabricated by in-situ coating a ‘green’ and biodegradable carboxymethyl chitosan (CMCS) layer as physical barrier. The CMCS layer can be decoated and re-coated by simple procedures. Results showed that (i) the CMCS layer enhanced surface hydrophilicity, surface smoothness and fouling resistance of NF membrane, (ii) both the unfouled and fouled CMCS layer were easily decoated by the strong acid solution, (iii) the CMCS layer was easily re-coated by facile recoating and (iv) the water flux recovery ratio of membrane with coating layer was maintained more than 88.8% during fouling testing by natural organic matter (NOM) after four sequential cycles of coating, decoating and recoating process. The re-coated membrane exhibited stable, improved membrane operational and antifouling performance. The coating-decoating-recoating approach is proven to be low-cost and eco-friendly strategy for NOM fouling control on NF membrane in water treatment applications.

Original language	English (US)
Pages (from-to)	118554
Journal	Water Research
DOIs	https://doi.org/10.1016/j.watres.2022.118554
State	Published - May 6 2022

ASJC Scopus subject areas

Water Science and Technology
Pollution
Ecological Modeling
Waste Management and Disposal

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10.1016/j.watres.2022.118554

https://repository.kaust.edu.sa/bitstream/10754/676661/1/1-s2.0-S0043135422005073-main.pdf

Cite this

@article{ac673db634ff417b9d207484b2ee1a14,

title = "A sacrificial protective layer as fouling control strategy for nanofiltration in water treatment",

abstract = "High-performance nanofiltration (NF) membrane with super antifouling capability as well as reusability is highly desired in water treatment. A new antifouling strategy by a coating-decoating-recoating cycle was investigated for effective removal of fouling and restoring the original membrane performance. The functional membrane surface was fabricated by in-situ coating a {\textquoteleft}green{\textquoteright} and biodegradable carboxymethyl chitosan (CMCS) layer as physical barrier. The CMCS layer can be decoated and re-coated by simple procedures. Results showed that (i) the CMCS layer enhanced surface hydrophilicity, surface smoothness and fouling resistance of NF membrane, (ii) both the unfouled and fouled CMCS layer were easily decoated by the strong acid solution, (iii) the CMCS layer was easily re-coated by facile recoating and (iv) the water flux recovery ratio of membrane with coating layer was maintained more than 88.8% during fouling testing by natural organic matter (NOM) after four sequential cycles of coating, decoating and recoating process. The re-coated membrane exhibited stable, improved membrane operational and antifouling performance. The coating-decoating-recoating approach is proven to be low-cost and eco-friendly strategy for NOM fouling control on NF membrane in water treatment applications.",

author = "Sihang Li and Huanna Meng and Haihua Wang and Vrouwenvelder, {Johannes S.} and Zhenyu Li",

note = "KAUST Repository Item: Exported on 2022-05-09 Acknowledgements: Supported by the National Key R&D Plan for International Cooperation in Science and Technology Innovation (No. 2017YFE0181100) and National Nature Science Foundation of China (No. 21901212).",

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doi = "10.1016/j.watres.2022.118554",

language = "English (US)",

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journal = "Water Research",

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T1 - A sacrificial protective layer as fouling control strategy for nanofiltration in water treatment

AU - Li, Sihang

AU - Meng, Huanna

AU - Wang, Haihua

AU - Vrouwenvelder, Johannes S.

AU - Li, Zhenyu

N1 - KAUST Repository Item: Exported on 2022-05-09 Acknowledgements: Supported by the National Key R&D Plan for International Cooperation in Science and Technology Innovation (No. 2017YFE0181100) and National Nature Science Foundation of China (No. 21901212).

PY - 2022/5/6

Y1 - 2022/5/6

N2 - High-performance nanofiltration (NF) membrane with super antifouling capability as well as reusability is highly desired in water treatment. A new antifouling strategy by a coating-decoating-recoating cycle was investigated for effective removal of fouling and restoring the original membrane performance. The functional membrane surface was fabricated by in-situ coating a ‘green’ and biodegradable carboxymethyl chitosan (CMCS) layer as physical barrier. The CMCS layer can be decoated and re-coated by simple procedures. Results showed that (i) the CMCS layer enhanced surface hydrophilicity, surface smoothness and fouling resistance of NF membrane, (ii) both the unfouled and fouled CMCS layer were easily decoated by the strong acid solution, (iii) the CMCS layer was easily re-coated by facile recoating and (iv) the water flux recovery ratio of membrane with coating layer was maintained more than 88.8% during fouling testing by natural organic matter (NOM) after four sequential cycles of coating, decoating and recoating process. The re-coated membrane exhibited stable, improved membrane operational and antifouling performance. The coating-decoating-recoating approach is proven to be low-cost and eco-friendly strategy for NOM fouling control on NF membrane in water treatment applications.

AB - High-performance nanofiltration (NF) membrane with super antifouling capability as well as reusability is highly desired in water treatment. A new antifouling strategy by a coating-decoating-recoating cycle was investigated for effective removal of fouling and restoring the original membrane performance. The functional membrane surface was fabricated by in-situ coating a ‘green’ and biodegradable carboxymethyl chitosan (CMCS) layer as physical barrier. The CMCS layer can be decoated and re-coated by simple procedures. Results showed that (i) the CMCS layer enhanced surface hydrophilicity, surface smoothness and fouling resistance of NF membrane, (ii) both the unfouled and fouled CMCS layer were easily decoated by the strong acid solution, (iii) the CMCS layer was easily re-coated by facile recoating and (iv) the water flux recovery ratio of membrane with coating layer was maintained more than 88.8% during fouling testing by natural organic matter (NOM) after four sequential cycles of coating, decoating and recoating process. The re-coated membrane exhibited stable, improved membrane operational and antifouling performance. The coating-decoating-recoating approach is proven to be low-cost and eco-friendly strategy for NOM fouling control on NF membrane in water treatment applications.

UR - http://hdl.handle.net/10754/676661

UR - https://linkinghub.elsevier.com/retrieve/pii/S0043135422005073

U2 - 10.1016/j.watres.2022.118554

DO - 10.1016/j.watres.2022.118554

M3 - Article

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SN - 0043-1354

SP - 118554

JO - Water Research

JF - Water Research

ER -

A sacrificial protective layer as fouling control strategy for nanofiltration in water treatment

Abstract

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