Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties
Reverse osmosis (RO) is a well-established and reliable desalination method that has been widely implemented on a commercial scale to resolve water scarcity issues. Constant efforts have been made to develop thin film composite membranes that can strike a balance between selectivity and permeability...
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| Format: | Article |
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Elsevier B.V.
2022
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| _version_ | 1796867472886857728 |
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| author | Suresh, Deepa Goh, Pei Sean Ismail, Ahmad Fauzi Mansur, Sumarni Wong, Kar Chun Asraf, Muhammad Hariz Nik Malek, Nik Ahmad Nizam Wong, Tuck Whye |
| author_facet | Suresh, Deepa Goh, Pei Sean Ismail, Ahmad Fauzi Mansur, Sumarni Wong, Kar Chun Asraf, Muhammad Hariz Nik Malek, Nik Ahmad Nizam Wong, Tuck Whye |
| author_sort | Suresh, Deepa |
| collection | ePrints |
| description | Reverse osmosis (RO) is a well-established and reliable desalination method that has been widely implemented on a commercial scale to resolve water scarcity issues. Constant efforts have been made to develop thin film composite membranes that can strike a balance between selectivity and permeability, while maintaining high durability towards fouling and chlorine attack. In this work, the surface of thin film composite RO membrane was modified by complexing tannic acid (TA) and silver nanoparticles (Ag NPs). TA was used for enhancing the chlorine resistance while Ag NPs act as a biocide to mitigate biofouling. Upon the formation of PA layer through interfacial polymerization, TA was chemically grafted, proceeded by in-situ reduction of Ag NPs. Transmission electron microscopy (TEM) image revealed that Ag NPs were deposited on top of the TA-PA interlayer and reduced as discrete spherical Ag NPs with diameter <15 nm. The greatest flux of 20.57 L/m2·h was produced by TFC-TA/Ag1, representing a 60 % improvement as compared to neat TFC membrane. The NaCl rejection of TFC-TA membrane was 97.83 %, which was slightly increased compared to neat TFC membrane with rejection of 95.14 %. Improved chlorine resistance and improved antibacterial properties against Gram-positive bacteria (S. aureus) and Gram-negative bacteria (E. coli) were witnessed for the TFC-TA/Ag1 membranes. This study demonstrates a facile chemical grafting and deposition to introduce multiple functionalities for improving the physical and separation properties of TFC RO membrane. |
| first_indexed | 2024-03-05T21:27:47Z |
| format | Article |
| id | utm.eprints-103498 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T21:27:47Z |
| publishDate | 2022 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | utm.eprints-1034982023-11-14T06:22:58Z http://eprints.utm.my/103498/ Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties Suresh, Deepa Goh, Pei Sean Ismail, Ahmad Fauzi Mansur, Sumarni Wong, Kar Chun Asraf, Muhammad Hariz Nik Malek, Nik Ahmad Nizam Wong, Tuck Whye TP Chemical technology Reverse osmosis (RO) is a well-established and reliable desalination method that has been widely implemented on a commercial scale to resolve water scarcity issues. Constant efforts have been made to develop thin film composite membranes that can strike a balance between selectivity and permeability, while maintaining high durability towards fouling and chlorine attack. In this work, the surface of thin film composite RO membrane was modified by complexing tannic acid (TA) and silver nanoparticles (Ag NPs). TA was used for enhancing the chlorine resistance while Ag NPs act as a biocide to mitigate biofouling. Upon the formation of PA layer through interfacial polymerization, TA was chemically grafted, proceeded by in-situ reduction of Ag NPs. Transmission electron microscopy (TEM) image revealed that Ag NPs were deposited on top of the TA-PA interlayer and reduced as discrete spherical Ag NPs with diameter <15 nm. The greatest flux of 20.57 L/m2·h was produced by TFC-TA/Ag1, representing a 60 % improvement as compared to neat TFC membrane. The NaCl rejection of TFC-TA membrane was 97.83 %, which was slightly increased compared to neat TFC membrane with rejection of 95.14 %. Improved chlorine resistance and improved antibacterial properties against Gram-positive bacteria (S. aureus) and Gram-negative bacteria (E. coli) were witnessed for the TFC-TA/Ag1 membranes. This study demonstrates a facile chemical grafting and deposition to introduce multiple functionalities for improving the physical and separation properties of TFC RO membrane. Elsevier B.V. 2022 Article PeerReviewed Suresh, Deepa and Goh, Pei Sean and Ismail, Ahmad Fauzi and Mansur, Sumarni and Wong, Kar Chun and Asraf, Muhammad Hariz and Nik Malek, Nik Ahmad Nizam and Wong, Tuck Whye (2022) Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties. Desalination, 543 (NA). pp. 1-16. ISSN 0011-9164 http://dx.doi.org/10.1016/j.desal.2022.116107 DOI : 10.1016/j.desal.2022.116107 |
| spellingShingle | TP Chemical technology Suresh, Deepa Goh, Pei Sean Ismail, Ahmad Fauzi Mansur, Sumarni Wong, Kar Chun Asraf, Muhammad Hariz Nik Malek, Nik Ahmad Nizam Wong, Tuck Whye Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties |
| title | Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties |
| title_full | Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties |
| title_fullStr | Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties |
| title_full_unstemmed | Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties |
| title_short | Complexation of tannic acid/silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti-biofouling properties |
| title_sort | complexation of tannic acid silver nanoparticles on polyamide thin film composite reverse osmosis membrane for enhanced chlorine resistance and anti biofouling properties |
| topic | TP Chemical technology |
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