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Maalige R N, Aruchamy K, Polishetti V, Halakarni M, Mahto A, Mondal D, Sanna Kotrappanavar N. Restructuring thin film composite membrane interfaces using biopolymer as a sustainable alternative to prevent organic fouling. Carbohydr Polym 2021; 254:117297. [PMID: 33357865 DOI: 10.1016/j.carbpol.2020.117297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 10/06/2020] [Accepted: 10/19/2020] [Indexed: 10/23/2022]
Abstract
Replacing polyamide (PA) layer in commercially successful thin film composite (TFC) membranes prepared via interfacial polymerization has been challenging task. Lately, PA is under scrutiny due to its increasing fouling propensity for highly contaminated waters. To mitigate the bio and organic fouling on PA layer in nanofiltration (NF) membranes in a long run, present study attempts to create a new interfacial thin film asymmetric structure using biopolymer chitosan as sustainable alternative. Herein, the effect of chitosan-silver on porous support structure and filtration performance were systematically investigated. Further, the membranes were characterized for their functionality and surface characteristics using ATR-IR, FESEM, AFM, UV-vis spectroscopy and contact angle measurements, respectively. New asymmetric membrane performances in cross flow process were evaluated in terms of pure water flux, NaCl (∼40 %), red brown/organic dye (>98 %) and tannery wastewater flux and rejection (>98 %). With a higher pure water flux (>100 L m-2 h-1) compared to control (40 L m-2 h-1) at 4 bar, membrane showed exceptional antifouling behaviors in comparison to commercial PA membrane. Further, surface characteristics of the membranes before and after rigorous testing were evaluated using AFM micrographs and SEM imaging.
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Affiliation(s)
- Nidhi Maalige R
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India
| | - Kanakaraj Aruchamy
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India
| | - Veerababu Polishetti
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), B.G. Marg, Bhavnagar, 364002, India
| | - Mahaveer Halakarni
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India
| | - Ashesh Mahto
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India
| | - Dibyendu Mondal
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India.
| | - Nataraj Sanna Kotrappanavar
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagara, Bangalore, 562112, India; IMDEA Water Institute, Avenida Punto Com, 2, Parque Cientıfco Tecnoĺogico de la Universidad de Alcala, Alcal ́a de Henares, 28805, Madrid, Spain.
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