Fabrication of polyvinylidene difluoride membrane with enhanced pore and filtration properties by using tannic acid as an additive

Sri Mulyati and Sri Aprilia and Syawaliah Muchtar and Yanna Syamsuddin and Cut Meurah Rosnelly and Muhammad Roil Bilad and Shafirah Samsuri and Noor Maizura Ismail (2022) Fabrication of polyvinylidene difluoride membrane with enhanced pore and filtration properties by using tannic acid as an additive. Polymers, 14. pp. 1-15.

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URL: https://www.mdpi.com/2073-4360/14/1/186

Abstract

Potential use of tannic acid (TA) as an additive for fabrication of polyvinylidene difluoride (PVDF) membrane was investigated. The TA was introduced by blending into the dope solution with varying concentrations of 0, 1, 1.5, and 2 wt%. The prepared membranes were characterized and evaluated for filtration of humic acid (HA) solution. The stability of the membrane under harsh treatment was also evaluated by one-week exposure to acid and alkaline conditions. The results show that TA loadings enhanced the resulting membrane properties. It increased the bulk porosity, water uptake, and hydrophilicity, which translated into improved clean water flux from 15.4 L/m2.h for the pristine PVDF membrane up to 3.3× for the TA-modified membranes with the 2 wt% TA loading. The flux recovery ratio (FRR) of the TA-modified membranes (FRRs = 78–83%) was higher than the pristine one (FRR = 58.54%), with suitable chemical stability too. The improved antifouling property for the TA-modified membranes was attributed to their enhanced hydrophilicity thanks to improved morphology and residual TA in the membrane matric.

Item Type:	Article
Keyword:	Tannic acid, Ultrafiltration, Humic acid, Antifouling
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) T Technology > TP Chemical technology > TP1-1185 Chemical technology > TP155-156 Chemical engineering
Department:	FACULTY > Faculty of Engineering
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	30 Dec 2024 09:25
Last Modified:	30 Dec 2024 09:25
URI:	https://eprints.ums.edu.my/id/eprint/42420

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