Removal of Methyl Green Dye from simulated waste water using Hollow Fiber Ultrafiltration Membrane

Abstract

Abstract Ultrafiltration has been favorably employed for recycling insoluble dyes and high molecular weight, some type of chemicals and water. Despite, ultrafiltration does not remove low molecular weight and soluble dyes (acid, direct, reactive, basic, etc.). The main advantages of the hollow fiber module are very high packing density and low-energy consumption. In this investigation, the performance of a Polyvinyl chloride (18 wt % PVC) hollow fiber ultrafiltration (UF) membrane for methyl green (MG) dye removal from aqueous solution was evaluated by examining the impact of varying the operation conditions (the concentration of dye and volumetric flow rate) to determine their impact on the separation processes (permeate flux and rejection coefficient) at constant pressure, temperature and at neutral pH. two configurations used: Semi-batch filtration and continuous filtration. UF was characterized by scanning electron microscopy. Besides, tests of the UF were carried out with pure water and MG aqueous solutions as feed. Results exhibited a notable influence of flow rate and feed concentration on the permeate flux and rejection, where the highest flux obtained equal to 32.7 l/hr.m2 with the highest rejection coefficient value close to 59.46% of the membrane system.