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http://dx.doi.org/10.4491/eer.2018.023

The roles of polyethersulfone and polyethylene glycol additive on nanofiltration of dyes and membrane morphologies  

Hassan, Abdul Rahman (East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, Gong Badak Campus)
Rozali, Sabariah (East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, Gong Badak Campus)
Safari, Nurul Hannan Mohd (East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, Gong Badak Campus)
Besar, Badrul Haswan (East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, Gong Badak Campus)
Publication Information
Environmental Engineering Research / v.23, no.3, 2018 , pp. 316-322 More about this Journal
Abstract
In this study, the effects of polymer concentration and additive in the formation of asymmetric nanofiltration (NF) membrane were evaluated. The membrane fabrication was carried out via dry/wet phase inversion technique. A new formulation of dope solution with polymer concentration ranging between 17 wt% to 21 wt% and the present of additive was developed. The results show that the permeate flux gradually decreases as polymer concentration increased, until $2.5969L/m^2h$ and increased the rejection up to 98.7%. Addition of additive, polyethylene glycol 600 increased dyes rejection up to 99.8% and decreased the permeate flux to $3.6501L/m^2h$. This indicates that the addition of polyethylene glycol additive led towards better membrane performance. The morphological characteristics of NF membrane were analysed using a Scanning Electron Microscopy.
Keywords
Additive; Dyes removal; Nanofiltration; Polymer concentration; Wastewater;
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