Enhanced Anti-Biofouling Properties of BWRO Membranes via the Deposition of Poly (Catechol/Polyamine) and Ag Nanoparticles
The surface modification of reverse osmosis (RO) membranes to improve their anti-biofouling properties is gaining increased attention. Here, we modified the polyamide brackish water reverse osmosis (BWRO) membrane via the biomimetic co-deposition of catechol (CA)/tetraethylenepentamine (TEPA) and in...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-05-01
|
| Series: | Membranes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0375/13/5/530 |
| _version_ | 1797599165749919744 |
|---|---|
| author | Lixin Xie Yaqian Liu Shichang Xu Wen Zhang |
| author_facet | Lixin Xie Yaqian Liu Shichang Xu Wen Zhang |
| author_sort | Lixin Xie |
| collection | DOAJ |
| description | The surface modification of reverse osmosis (RO) membranes to improve their anti-biofouling properties is gaining increased attention. Here, we modified the polyamide brackish water reverse osmosis (BWRO) membrane via the biomimetic co-deposition of catechol (CA)/tetraethylenepentamine (TEPA) and in situ growth of Ag nanoparticles. Ag ions were reduced into Ag nanoparticles (AgNPs) without extraneous reducing agents. The hydrophilic property of the membrane was improved, and the zeta potential was also increased after the deposition of poly (catechol/polyamine) and AgNPs. Compared with the original RO membrane, the optimized PCPA3-Ag10 membrane showed a slight reduction in water flux, and the salt rejection declined, but enhanced anti-adhesion and anti-bacterial activities were observed. The <i>FDR<sub>t</sub></i> of the PCPA3-Ag10 membranes during the filtration of BSA, SA and DTAB solution were 5.63 ± 0.09%, 18.34 ± 0.33% and 34.12 ± 0.15%, respectively, much better than those of the original membrane. Moreover, the PCPA3-Ag10 membrane exhibited a 100% reduction in the number of viable bacteria (B. subtilis and E. coli) inoculated on the membrane. The stability of the AgNPs was also high enough, and these results verify the effectiveness of poly (catechol/polyamine) and the AgNP-based modification strategy for the control of fouling. |
| first_indexed | 2024-03-11T03:30:53Z |
| format | Article |
| id | doaj.art-f9ecb610f65147f59cf58b26cfe4d4d5 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-11T03:30:53Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-f9ecb610f65147f59cf58b26cfe4d4d52023-11-18T02:24:46ZengMDPI AGMembranes2077-03752023-05-0113553010.3390/membranes13050530Enhanced Anti-Biofouling Properties of BWRO Membranes via the Deposition of Poly (Catechol/Polyamine) and Ag NanoparticlesLixin Xie0Yaqian Liu1Shichang Xu2Wen Zhang3School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering Tianjin University, Tianjin 300350, ChinaSchool of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering Tianjin University, Tianjin 300350, ChinaSchool of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering Tianjin University, Tianjin 300350, ChinaSchool of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering Tianjin University, Tianjin 300350, ChinaThe surface modification of reverse osmosis (RO) membranes to improve their anti-biofouling properties is gaining increased attention. Here, we modified the polyamide brackish water reverse osmosis (BWRO) membrane via the biomimetic co-deposition of catechol (CA)/tetraethylenepentamine (TEPA) and in situ growth of Ag nanoparticles. Ag ions were reduced into Ag nanoparticles (AgNPs) without extraneous reducing agents. The hydrophilic property of the membrane was improved, and the zeta potential was also increased after the deposition of poly (catechol/polyamine) and AgNPs. Compared with the original RO membrane, the optimized PCPA3-Ag10 membrane showed a slight reduction in water flux, and the salt rejection declined, but enhanced anti-adhesion and anti-bacterial activities were observed. The <i>FDR<sub>t</sub></i> of the PCPA3-Ag10 membranes during the filtration of BSA, SA and DTAB solution were 5.63 ± 0.09%, 18.34 ± 0.33% and 34.12 ± 0.15%, respectively, much better than those of the original membrane. Moreover, the PCPA3-Ag10 membrane exhibited a 100% reduction in the number of viable bacteria (B. subtilis and E. coli) inoculated on the membrane. The stability of the AgNPs was also high enough, and these results verify the effectiveness of poly (catechol/polyamine) and the AgNP-based modification strategy for the control of fouling.https://www.mdpi.com/2077-0375/13/5/530RO membraneanti-foulingco-depositionpoly (catechol/polyamine)silver nanoparticles |
| spellingShingle | Lixin Xie Yaqian Liu Shichang Xu Wen Zhang Enhanced Anti-Biofouling Properties of BWRO Membranes via the Deposition of Poly (Catechol/Polyamine) and Ag Nanoparticles Membranes RO membrane anti-fouling co-deposition poly (catechol/polyamine) silver nanoparticles |
| title | Enhanced Anti-Biofouling Properties of BWRO Membranes via the Deposition of Poly (Catechol/Polyamine) and Ag Nanoparticles |
| title_full | Enhanced Anti-Biofouling Properties of BWRO Membranes via the Deposition of Poly (Catechol/Polyamine) and Ag Nanoparticles |
| title_fullStr | Enhanced Anti-Biofouling Properties of BWRO Membranes via the Deposition of Poly (Catechol/Polyamine) and Ag Nanoparticles |
| title_full_unstemmed | Enhanced Anti-Biofouling Properties of BWRO Membranes via the Deposition of Poly (Catechol/Polyamine) and Ag Nanoparticles |
| title_short | Enhanced Anti-Biofouling Properties of BWRO Membranes via the Deposition of Poly (Catechol/Polyamine) and Ag Nanoparticles |
| title_sort | enhanced anti biofouling properties of bwro membranes via the deposition of poly catechol polyamine and ag nanoparticles |
| topic | RO membrane anti-fouling co-deposition poly (catechol/polyamine) silver nanoparticles |
| url | https://www.mdpi.com/2077-0375/13/5/530 |
| work_keys_str_mv | AT lixinxie enhancedantibiofoulingpropertiesofbwromembranesviathedepositionofpolycatecholpolyamineandagnanoparticles AT yaqianliu enhancedantibiofoulingpropertiesofbwromembranesviathedepositionofpolycatecholpolyamineandagnanoparticles AT shichangxu enhancedantibiofoulingpropertiesofbwromembranesviathedepositionofpolycatecholpolyamineandagnanoparticles AT wenzhang enhancedantibiofoulingpropertiesofbwromembranesviathedepositionofpolycatecholpolyamineandagnanoparticles |