Synthesis and performance evaluation of PESchitosan membranes coated with polyamide for acid mine drainage treatment

Show simple item record Mathaba, M. Daramola, M. 2020-09-30T22:45:00Z 2020-09-30T22:45:00Z 2019-12-01
dc.identifier.citation Machodi, M.J. and Daramola, M.O. 2019. Synthesis and performance evaluation of PES/chitosan membranes coated with polyamide for acid mine drainage treatment. Scientific Reports 9(1), Article number 17657. en_ZA
dc.identifier.issn 2045-2322
dc.description.abstract In this article, performance evaluation of PES membrane infused with chitosan and coated with polyamide layer for treatment of acid mine drainage (AMD) is reported. PES/chitosan membranes were fabricated by varying chitosan concentration (0, 0.5, 0.75 and 1 wt%) using phase inversion method. PES/chitosan membranes were coated with polyamide (PA) via co-solvent assisted interfacial polymerization technique (CAIP). Scanning electron microscopy (SEM) and contact angle analysis show that chitosan and polyamide could enhance permeability without affecting rejection of the membrane. The permeability was improved with increasing chitosan content. Atomic absorption spectroscopy (AAS) was used to quantitatively determine cations in the permeate and the sulphate ions were analysed using ultraviolet and visible (UV-VIS) spectrophotometer. Pure water flux of PES/PA membrane was significantly improved from 56 to 93 l/ with 1 wt% chitosan addition. Cation rejection (90.4, 88.3, 89.3 and 75.7% for Mn2+,Fe2+, Mg2+ and Ca2+, respectively) was observed to be higher than anion rejection (56.33% for SO4 2−), when chitosan content was 0.75 wt%. These results indicate that the positively charged membranes under acidic condition had strong repulsive forces with the cations than attractions forces with anions. Polyethersulphone membrane modified with chitosan and coated with polyamide layer displayed potential for application in treatment of AMD. en_ZA
dc.description.sponsorship National Kidney Foundation of South Africa en_ZA
dc.language.iso en en_ZA
dc.publisher Nature Research en_ZA
dc.rights © The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License. en_ZA
dc.subject Nanofiltration Membranes en_ZA
dc.subject Thin Film Composite Membranes en_ZA
dc.subject Reverse Osmosis en_ZA
dc.title Synthesis and performance evaluation of PESchitosan membranes coated with polyamide for acid mine drainage treatment en_ZA
dc.type Article en_ZA
dc.journal.volume 9 en_ZA
dc.journal.title SCIENTIFIC REPORTS en_ZA
dc.description.librarian SP2020 en_ZA
dc.citation.doi 10.1038/S41598-019-53512-8 en_ZA
dc.citation.epage 14
dc.citation.spage 1
dc.journal.issue 1 en_ZA
dc.faculty Faculty of Engineering & the Built Environment en_ZA School of Chemical and Metallurgical Engineering en_ZA

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