Selective Removal of Malachite Green Dye from Aqueous Solutions by Supported Liquid Membrane Technology

Mohammad Waqar Ashraf, Nidal Abulibdeh and Abdus Salam
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Mohammad Waqar Ashraf: Department of Mathematics & Natural Sciences, Prince Mohammad Bin Fahd University, Alkhobar 31952, Saudi Arabia
Nidal Abulibdeh: Department of Mathematics & Natural Sciences, Prince Mohammad Bin Fahd University, Alkhobar 31952, Saudi Arabia
Abdus Salam: Department of Chemistry, King Abdulaziz University, Rabigh 21911, Saudi Arabia

IJERPH, 2019, vol. 16, issue 18, 1-9

Abstract: A lab-scale study on the application of supported liquid membranes (SLM) has been conducted for recovery and selective removal of Malachite Green dye from wastewater. Naturally occurring non-toxic vegetable oils have been used as membrane liquids. Polyvinylidene fluoride (PVDF) films have been used as supports for the liquid membrane. Various parameters affecting the dye permeation such as initial dye concentration, pH, stripping acid concentration, oil viscosity and membrane stability have been investigated. The highest flux value (1.65 × 10 −5 mg/cm 2 /sec) was obtained with a sunflower oil supported membrane at pH 11 in the feed and 0.25 M HCl in the stripping solution. The membrane showed good stability under optimum conditions and maximum transport was achieved in 8 h of permeation time.

Keywords: liquid membrane; removal; dyes; wastewaters (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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