4-aminophenyl sulfone (APS) as novel monomer in fabricating paper based TFC composite for forward osmosis: Selective layer optimization. Issue 2 (April 2020)

• Record Type: Journal Article
• Authors: Nayak, Vignesh; MS, Jyothi; Balakrishna, R.Geetha; Padaki, Mahesh; Zadorozhnyy, V.Yu; Kaloshkin, S.D.
• Is Part Of: Journal of environmental chemical engineering. Volume 8:Issue 2(2020)
• Publication Date: 2020-04
• Subjects: Forward osmosis -- Salt rejection -- Filter paper -- 4-aminophenyl sulfone -- organic/aqueous and organic/organic polymerization system; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2020.103664
• Languages: English
• ISSNs: 2213-2929

Abstract

Graphical abstract: Highlights: The stability of aqueous/organic system over organic/organic system for the formation of surface coating was studied. The work reports potential use of filter paper and novel monomer 4-aminophenyl sulfone for TFC fabrication. The prepared TFC membranes were applied in NaCl and Na2 SO4 rejection via forward osmosis system. m-phenylenediamine monomer showed better film forming properties as compared to 4-aminophenyl sulfone. Abstract: The potential of filter paper as a substrate material and 4-aminophenyl sulfone (APS) as a novel monomer for TFC fabrication is explored for the first time. A novel polyamide selective layer was developed using APS and trimesoyl chloride by interfacial polymerization, whereas the control TFC was prepared by replacing APS with m-phenylenediamine. Formation of the interfacial selective layer was verified by ATR-IR spectra and the stability of the selective surface coatings was discussed by investigating the monomer interaction. Surprisingly, after polymerization, interconnected, cross-linked structure of two monomers was observed. Desalination studies were carried out in FO mode and PRO mode using NH4 HCO3 as a draw solution. Maximum of 90% and 95% rejection was obtained for NaCl and Na2 SO4 salts with a flux of 2.51 and 2.17 LMH respectively. The separation efficiency of the prepared TFC membrane was compared against the likes of a commercial TFC membrane under the same conditions.