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Simultaneous separation and degradation of surfactants laden in produced water using PVDF/TiO2 photocatalytic membrane

Rawindran, Hemamalini and Lim, Jun-Wei and Goh, Pei-Sean and Subramaniam, Mahesan Naidu and Ismail, Ahmad Fauzi and Nik M. Daud, Nik M.Radi and Arzhandi, M. Rezaei-Dasht (2019) Simultaneous separation and degradation of surfactants laden in produced water using PVDF/TiO2 photocatalytic membrane. Journal of Cleaner Production, 221 . pp. 490-501. ISSN 0959-6526

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Official URL: http://dx.doi.org/10.1016/j.jclepro.2019.02.230

Abstract

Massive volume of produced water laden with surfactants is generated from enhanced oil recovery (EOR) platform. Besides surfactants, this produced water also holds various organic and inorganic pollutants which requires intensive treatment before being discharged offshore. Current research focused on a radical solution for actual application in which the PVDF-TiO 2 hollow fiber photocatalytic membranes were fabricated to simultaneously separate and degrade the surfactants laden in produced water. The characterization study portrayed the membranes with increasing TiO 2 nanoparticles exhibited an improvement in surface hydrophilicity, porosity and tensile strength; besides, having an appropriate surface morphology and topology to remove the surfactants from produced water. Nevertheless, an excessive loading of TiO 2 nanoparticles beyond 2 wt% had deteriorated the membrane performances in terms of flux and surfactant rejection measured as COD removal. These deteriorations were justified by the agglomeration of excessive TiO 2 nanoparticles as observed occluding the pores on membrane surface. In predicting the membrane flux and rejection amidst the simultaneous separation and degradation of surfactants from produced water, two statistical models were subsequently derived by manipulating the produced water pH and air bubble flow rate (ABFR) of reactor operating conditions. The models permitted the fundamental comprehension of the correlations between the membrane flux and rejection parameters against the reactor operating conditions. Considering these correlations, the optimization of reactor operating conditions was finally evaluated and determined to achieve at the pH of 6.00 and ABFR of 0.41 L/min, giving rise to the membrane flux and rejection of 47.95 ± 1.34 L/m 2 h and 66.73 ± 0.76%, respectively.

Item Type:Article
Uncontrolled Keywords:optimization, photocatalytic filtration, produced water
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:89130
Deposited By: Yanti Mohd Shah
Deposited On:26 Jan 2021 16:44
Last Modified:26 Jan 2021 16:44

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