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Treatment of dye solutions by DL nanofiltration membrane

机译:DL纳滤膜处理染料溶液

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摘要

This study describes the rejection of acid black 194 dye using a DL nanofiltration membrane. Membrane experiments were conducted in a cross-flow system. Effects of membrane pressure (5, 10, and 15 bar), feed pH (3, 7, and 10), feed temperature (25, 35, and 45 degrees C) and dye concentration in the feed solution (50, 500, and 1000 mg/L) on the membrane performance were investigated. The surface morphologies of membranes were investigated using scanning electron microscopy (SEM). The results indicate that the DL membrane has satisfactory average dye rejection (99.72 +/- 0.140%) at operating pressure of 5 bar, 1000 mg/L dye concentration, 25 degrees C feed temperature and feed pH = 7.
机译:这项研究描述了使用DL纳滤膜对酸性黑194染料的排斥。在错流系统中进行膜实验。膜压力(5、10和15 bar),进料pH(3、7和10),进料温度(25、35和45摄氏度)和进料溶液中的染料浓度(50、500和5)的影响对膜性能进行了研究(1000 mg / L)。使用扫描电子显微镜(SEM)研究膜的表面形态。结果表明,DL膜在5 bar的工作压力,1000 mg / L的染料浓度,25℃的进料温度和进料pH = 7的条件下具有令人满意的平均染料截留率(99.72 +/- 0.140%)。

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