In situ surface modification of forward osmosis membrane by polydopamine/polyethyleneimine-silver nanoparticle for anti-fouling improvement in municipal wastewater treatment
In this work, we demonstrate the surface functionalization of cellulose triacetate membrane with co-deposition of polydopamine (PDA)/polyethyleneimine (PEI) and silver nanoparticles (AgNPs) for antifouling property in municipal wastewater treatment. PDA/PEI was first coated on the membrane surface b...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-05-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/87/9/2195 |
| _version_ | 1797809051991539712 |
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| author | Yan Sun Lu Zheng Qianying Feng Xiaoyang Xie Zixin Yong Jiaojie He Liwei Yang Xiaohong Zhao |
| author_facet | Yan Sun Lu Zheng Qianying Feng Xiaoyang Xie Zixin Yong Jiaojie He Liwei Yang Xiaohong Zhao |
| author_sort | Yan Sun |
| collection | DOAJ |
| description | In this work, we demonstrate the surface functionalization of cellulose triacetate membrane with co-deposition of polydopamine (PDA)/polyethyleneimine (PEI) and silver nanoparticles (AgNPs) for antifouling property in municipal wastewater treatment. PDA/PEI was first coated on the membrane surface by single-step co-deposition, while AgNPs were formed in situ through catechol groups of PDA immobilizing silver ions and subsequently reducing. The successful surface modification was verified by different membrane characterization techniques. The modified PDA/PEI-nAg CTA membrane exhibits enhanced hydrophilicity and improved antiadhesion and antimicrobial activity. Furthermore, the functional layer had an indistinctive effect on the membrane transport parameters. In addition, dynamic forward osmosis (FO) fouling experiment with raw municipal wastewater as feed solution indicated that the PDA/PEI-nAg CTA membrane exhibited notably lower water flux decrease compared to the nascent CTA membrane. The results of confocal laser scanning microscopy (CLSM) showed that PDA/PEI-nAg CTA membranes effectively reduced the adsorption of organic foulants (proteins and polysaccharides) and inhibited the formation and development of the fouling layer. The membrane surface modification of the CTA membrane with PDA/PEI and AgNPs efficiently mitigated membrane fouling in municipal wastewater treatment.
HIGHLIGHTS
AgNPs were in situ immobilized on a CTA FO membrane with PDA/PEI coating layer.;
The PDA/PEI coating and Ag in situ generation had no considerable impact on the mass transport coefficients of the CTA FO membrane.;
The PDA/PEI-nAg CTA-modified membrane exhibited excellent antifouling performance for raw municipal wastewater treatment.; |
| first_indexed | 2024-03-13T06:46:47Z |
| format | Article |
| id | doaj.art-ddc8a73038084fa2a56c95392057e770 |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-03-13T06:46:47Z |
| publishDate | 2023-05-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-ddc8a73038084fa2a56c95392057e7702023-06-08T05:53:33ZengIWA PublishingWater Science and Technology0273-12231996-97322023-05-018792195220910.2166/wst.2023.115115In situ surface modification of forward osmosis membrane by polydopamine/polyethyleneimine-silver nanoparticle for anti-fouling improvement in municipal wastewater treatmentYan Sun0Lu Zheng1Qianying Feng2Xiaoyang Xie3Zixin Yong4Jiaojie He5Liwei Yang6Xiaohong Zhao7 School of Civil Engineering, Chang'an University, Xi'an 710061, China School of Civil Engineering, Chang'an University, Xi'an 710061, China School of Civil Engineering, Chang'an University, Xi'an 710061, China School of Civil Engineering, Chang'an University, Xi'an 710061, China China Northwest Architecture Design and Research Institute Co., Ltd, Xi'an 710018, China School of Civil Engineering, Chang'an University, Xi'an 710061, China School of Civil Engineering, Chang'an University, Xi'an 710061, China School of Civil Engineering, Chang'an University, Xi'an 710061, China In this work, we demonstrate the surface functionalization of cellulose triacetate membrane with co-deposition of polydopamine (PDA)/polyethyleneimine (PEI) and silver nanoparticles (AgNPs) for antifouling property in municipal wastewater treatment. PDA/PEI was first coated on the membrane surface by single-step co-deposition, while AgNPs were formed in situ through catechol groups of PDA immobilizing silver ions and subsequently reducing. The successful surface modification was verified by different membrane characterization techniques. The modified PDA/PEI-nAg CTA membrane exhibits enhanced hydrophilicity and improved antiadhesion and antimicrobial activity. Furthermore, the functional layer had an indistinctive effect on the membrane transport parameters. In addition, dynamic forward osmosis (FO) fouling experiment with raw municipal wastewater as feed solution indicated that the PDA/PEI-nAg CTA membrane exhibited notably lower water flux decrease compared to the nascent CTA membrane. The results of confocal laser scanning microscopy (CLSM) showed that PDA/PEI-nAg CTA membranes effectively reduced the adsorption of organic foulants (proteins and polysaccharides) and inhibited the formation and development of the fouling layer. The membrane surface modification of the CTA membrane with PDA/PEI and AgNPs efficiently mitigated membrane fouling in municipal wastewater treatment. HIGHLIGHTS AgNPs were in situ immobilized on a CTA FO membrane with PDA/PEI coating layer.; The PDA/PEI coating and Ag in situ generation had no considerable impact on the mass transport coefficients of the CTA FO membrane.; The PDA/PEI-nAg CTA-modified membrane exhibited excellent antifouling performance for raw municipal wastewater treatment.;http://wst.iwaponline.com/content/87/9/2195antifoulingforward osmosismunicipal wastewater treatmentpolydopamine/polyethyleneimine-silver nanoparticlesurface modification |
| spellingShingle | Yan Sun Lu Zheng Qianying Feng Xiaoyang Xie Zixin Yong Jiaojie He Liwei Yang Xiaohong Zhao In situ surface modification of forward osmosis membrane by polydopamine/polyethyleneimine-silver nanoparticle for anti-fouling improvement in municipal wastewater treatment Water Science and Technology antifouling forward osmosis municipal wastewater treatment polydopamine/polyethyleneimine-silver nanoparticle surface modification |
| title | In situ surface modification of forward osmosis membrane by polydopamine/polyethyleneimine-silver nanoparticle for anti-fouling improvement in municipal wastewater treatment |
| title_full | In situ surface modification of forward osmosis membrane by polydopamine/polyethyleneimine-silver nanoparticle for anti-fouling improvement in municipal wastewater treatment |
| title_fullStr | In situ surface modification of forward osmosis membrane by polydopamine/polyethyleneimine-silver nanoparticle for anti-fouling improvement in municipal wastewater treatment |
| title_full_unstemmed | In situ surface modification of forward osmosis membrane by polydopamine/polyethyleneimine-silver nanoparticle for anti-fouling improvement in municipal wastewater treatment |
| title_short | In situ surface modification of forward osmosis membrane by polydopamine/polyethyleneimine-silver nanoparticle for anti-fouling improvement in municipal wastewater treatment |
| title_sort | in situ surface modification of forward osmosis membrane by polydopamine polyethyleneimine silver nanoparticle for anti fouling improvement in municipal wastewater treatment |
| topic | antifouling forward osmosis municipal wastewater treatment polydopamine/polyethyleneimine-silver nanoparticle surface modification |
| url | http://wst.iwaponline.com/content/87/9/2195 |
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