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Humic Acid Removal From Water Using a Novel Fabricated Antifouling Carbon Nanotube Bucky - Paper Membrane and Effect of Operating Parameters Publisher



Jafari A1 ; Nasseri S2, 3 ; Nabizadeh R3 ; Mousavi SA4 ; Rezaee R5 ; Mahvi AH2, 3, 6
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Health, Lorestan University of Medical Sciences, Khorramabad, Iran
  2. 2. Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
  5. 5. Kurdistan Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
  6. 6. Center for Solid Waste Research (CSWR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran

Source: Global Nest Journal Published:2017


Abstract

In present work, a novel supported bucky paper (BP) membrane was fabricated and evaluated for humic acid (HA) removal from water. For better understanding the effect of operating variables, response surface methodology (RSM) was also applied. Three independent parameters namely TOC concentration (5, 10 and 15 mg l-1), operating time (10, 20 and 30 min) and transmembrane pressure (TMP) (1, 2 and 3 bar) were selected for TOC removal (%) and permeate flux analysis. The results revealed that the membrane could effectively remove HA primarily through electrostatic repulsion and then adsorption mechanisms. The study also showed that about 65% and 35% of the removed HA were through repulsion and adsorption mechanisms respectively. Based on analysis of variance (ANOVA), it was showed that the effect of TMP was strongly significant on the removal and flux (P-value <0.05). In addition, statistical test confirmed that RSM based on the Box–Behnken was a suitable method for optimizing the main operating variables for HA rejection using BP membrane (R2=0.97). At optimum condition (TMP of 1.5 bar, TOC concentration of 12.7 mg l-1) and operating time of 13.5 min, removal obtained 67.4% and the flux was 233.4 lm-2h-1. In general, the synthesized BP membrane showed a relatively good rejection of HA and revealed antifouling properties over the filtration time. © 2017 Global NEST Printed in Greece. All rights reserved
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