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Rejection of Caffeine and Carbamazepine by surface coated PVDF hollow-fiber membrane system

Ojajuni, OD, Holder, S, Cavalli, G, Lee, J and Saroj, DP (2016) Rejection of Caffeine and Carbamazepine by surface coated PVDF hollow-fiber membrane system Industrial & Engineering Chemistry Research.

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Abstract

This research investigates surface coated ultrafiltration (UF) polyvinylidene fluoride (PVDF) hollow fiber membrane for the removal of organic micropollutants (OMPs) in water. Coating of PVDF membranes with Poly (1-phenylethene-1,2-diyl) - Polystyrene solution through physical adsorption was carried out under two modes, ‘dipped’ and ‘sprayed’. The performance of the coated membrane in the rejection of model organic micropollutants, caffeine and carbamazepine spiked in deionised water (at 300 g/L and 500 g/L), correlated with the coating methods used. Dipped coated membrane showed a better removal of recalcitrant hydrophobic carbamazepine compared to the ‘sprayed’ coated membrane; while for both methods of coating, removal of caffeine was relatively insignificant. Inferably, hydrophobic interaction and size exclusion may be the major removal mechanism involved in the rejection by the coated membranes. The coating layer potentially enhanced reduction of pore size with resulting effect on membrane permeability and providing more sites for possible hydrophobic interaction.

Item Type: Article
Subjects : Water and Environmental Engineering
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
AuthorsEmailORCID
Ojajuni, ODUNSPECIFIEDUNSPECIFIED
Holder, SUNSPECIFIEDUNSPECIFIED
Cavalli, GUNSPECIFIEDUNSPECIFIED
Lee, JUNSPECIFIEDUNSPECIFIED
Saroj, DPUNSPECIFIEDUNSPECIFIED
Date : 9 February 2016
Funders : Niger Delta Development Commission, Nigeria, Braithwaite family foundation, UK
Identification Number : 10.1021/acs.iecr.5b04055
Copyright Disclaimer : Copyright © 2016 American Chemical Society.
Related URLs :
Additional Information : Copyright © 2016 American Chemical Society.
Depositing User : Symplectic Elements
Date Deposited : 04 Mar 2016 10:14
Last Modified : 04 Mar 2016 12:55
URI: http://epubs.surrey.ac.uk/id/eprint/810040

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