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The adsorptive removal of chromium (VI) in aqueous solution by novel natural zeolite based hollow fibre ceramic membrane

Adam, Mohd. Ridhwan and Mohd. Salleh, Norliyana and Othman, Mohd. Hafiz Dzarfan and Matsuura, Takeshi and Ali, Mohd. Hafizi and Puteh, Mohd. Hafiz and Ismail, A. F. and A. Rahman, Mukhlis and Jaafar, Juhana (2018) The adsorptive removal of chromium (VI) in aqueous solution by novel natural zeolite based hollow fibre ceramic membrane. Journal of Environmental Management, 224 . pp. 252-262. ISSN 0301-4797

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Official URL: http://dx.doi.org/10.1016/j.jenvman.2018.07.043

Abstract

Adsorption is one of the most efficient ways to remove heavy metal from wastewater. In this study, the adsorptive removal of hexavalent chromium, Cr (VI) from aqueous solution was investigated using natural zeolite, clinoptilolite, in the form of hollow fibre ceramic membrane (HFCM). The HFCM sample was prepared using phase inversion-based extrusion technique and followed by sintering process at different sintering temperatures in the range of 900–1050 °C. The fabricated HFCM was characterised using scanning electron microscopy (SEM), contact angle, water permeability, and mechanical strength for all HFCMs sintered at different temperatures. The adsorption and filtration test of Cr (VI) were performed using an in-house water permeation set up with a dead-end cross-flow permeation test. An asymmetric structure with sponge- and finger-like structures across the cross-section of HFCM was observed using SEM. Based on the characterisation data, 1050 °C was chosen to be the best sintering temperature as the water permeability and mechanical strength of this HFCM were 29.14 L/m2∙h and 50.92 MPa, respectively. The performance of the HFCM in adsorption/filtration was 44% of Cr (VI) removal at the Cr (VI) concentration of 40 mg/L and pH 4. In addition, the mathematical model was also performed in simulating the experimental data obtained from this study. All in all, the natural zeolite-based HFCM has a potential as a single-step Cr (VI) removal by membrane adsorption for the wastewater treatment.

Item Type:Article
Uncontrolled Keywords:adsorption, hollow fibre ceramic membrane (HFCM), natural zeolite, phase inversion, sintering technique
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:85426
Deposited By: Yanti Mohd Shah
Deposited On:16 Jun 2020 14:48
Last Modified:16 Jun 2020 14:48

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