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

机译:支持液膜技术选择性去除水溶液中的孔雀石绿染料

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摘要

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/cm2/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.
机译:为了从废水中回收和选择性去除孔雀石绿染料,已进行了实验室规模的研究,研究了应用支撑液膜(SLM)的情况。天然存在的无毒植物油已被用作膜液。聚偏二氟乙烯(PVDF)薄膜已被用作液膜的载体。已经研究了影响染料渗透的各种参数,例如初始染料浓度,pH,汽提酸浓度,油粘度和膜稳定性。在进料中,pH为11的向日葵油和0.25M HCl的向日葵油负载膜获得最高通量值(1.65×10 -5 mg / cm 2 / sec)。剥离溶液。该膜在最佳条件下显示出良好的稳定性,并且在8 h的渗透时间内实现了最大的转运。

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