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Removal of nickel from industrial effluent using a synergistic mixtures of acidic and solvating carriers in palm oil-based diluent via supported liquid membrane process

Raja Sulaiman, Raja Norimie and Othman, Norasikin and Mohamed Noah, Norul Fatiha and Jusoh, Norela (2018) Removal of nickel from industrial effluent using a synergistic mixtures of acidic and solvating carriers in palm oil-based diluent via supported liquid membrane process. Chemical Engineering Research and Design, 137 . pp. 360-375. ISSN 0263-8762

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Official URL: http://dx.doi.org/10.1016/j.cherd.2018.07.034

Abstract

The utilization of environmentally benign diluent of palm oil in the supported liquid membrane (SLM) process is able to reduce both environmental and economic problems due to the consumption of the petroleum-based diluent. A preliminary study has been conducted on the removal of nickel ion via SLM using bis(2-ethylhexyl) phosphate (D2EHPA), octanol, kerosene and sulfuric acid solution as a carrier, synergist, diluent and stripping agent, respectively. Several process variables involve namely D2EHPA, octanol and sulfuric acid concentration as well as feed flowrate were optimized using the Box–Behnken design (BBD). Results showed that about 90 and 95% of the nickel ions were successfully removed and recovered, respectively after 6 h at a permeation coefficient of 6.94 × 10−6 cms−1 under optimum conditions of 1.25M D2EHPA, 15% (v/v) octanol, 1.75M sulfuric acid and 100 mL/min of feed flowrate. Using the aforementioned optimum condition, a further investigation on the removal and recovery performance of nickel has been carried out by means of the palm oil as a diluent. Interestingly, the result showed that about 91 and 65% of the nickel ions were successfully removed and recovered, respectively. Hence, it revealed that palm oil has high prospective as a substitute for sustainable diluent in the SLM process as well as offering a better insight in the separation process that deals with an environmentally friendly materials in the future. Besides, the stability of the membrane was found to be satisfactory over ten consecutive cycles of operation.

Item Type:Article
Uncontrolled Keywords:Nickel ion, Palm oil
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:84751
Deposited By: Widya Wahid
Deposited On:27 Feb 2020 12:54
Last Modified:27 Feb 2020 12:54

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