Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water
Abstract This study investigates the removal of Pb(II) using polymer matrix membranes, cellulose acetate/vinyl triethoxysilane modified graphene oxide and gum Arabic (GuA) membranes. These complexation-NF membranes were successfully synthesized via dissolution casting method for better transport phe...
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2021-01-01
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doaj-0adacdb21449408aa654d4674fa37d272021-01-24T12:32:06ZengNature Publishing GroupScientific Reports2045-23222021-01-0111111410.1038/s41598-020-80384-0Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste waterH. Idress0S. Z. J. Zaidi1A. Sabir2M. Shafiq3R. U. Khan4C. Harito5S. Hassan6F. C. Walsh7Department of Polymer Engineering and Technology, University of the PunjabInstitute of Chemical Engineering and Technology, University of the PunjabDepartment of Polymer Engineering and Technology, University of the PunjabDepartment of Polymer Engineering and Technology, University of the PunjabDepartment of Polymer Engineering and Technology, University of the PunjabIndustrial Engineering Department, Faculty of Engineering, Bina Nusantara UniversityMechanical Engineering, Faculty of Engineering and Physical Sciences, University of SouthamptonElectrochemical Engineering Laboratory, Faculty of Engineering and Environment, Engineering Sciences, University of SouthamptonAbstract This study investigates the removal of Pb(II) using polymer matrix membranes, cellulose acetate/vinyl triethoxysilane modified graphene oxide and gum Arabic (GuA) membranes. These complexation-NF membranes were successfully synthesized via dissolution casting method for better transport phenomenon. The varied concentrations of GuA were induced in the polymer matrix membrane. The prepared membranes M-GuA2–M-GuA10 were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscope and bio-fouling studies. Thermal stability of the membranes was determined by thermogravimetric analysis under nitrogen atmosphere. Dead end nanofiltration was carried out to study the perm- selectivity of all the membranes under varied pressure and concentration of Pb(NO3)2. The complexation-NF membrane performances were significantly improved after the addition of GuA in the polymer matrix membrane system. M-GuA8 membrane showed optimum result of permeation flux 8.6 l m−2 h−1. Rejection of Pb(II) ions was observed to be around 97.6% at pH 9 for all the membranes due to electrostatic interaction between CA and Gum Arabic. Moreover, with the passage of time, the rate of adsorption was also increased up to 15.7 mg g−1 until steady state was attained. Gum Arabic modified CA membranes can open up new possibilities in enhancing the permeability, hydrophilicity and anti-fouling properties.https://doi.org/10.1038/s41598-020-80384-0 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
H. Idress S. Z. J. Zaidi A. Sabir M. Shafiq R. U. Khan C. Harito S. Hassan F. C. Walsh |
spellingShingle |
H. Idress S. Z. J. Zaidi A. Sabir M. Shafiq R. U. Khan C. Harito S. Hassan F. C. Walsh Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water Scientific Reports |
author_facet |
H. Idress S. Z. J. Zaidi A. Sabir M. Shafiq R. U. Khan C. Harito S. Hassan F. C. Walsh |
author_sort |
H. Idress |
title |
Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water |
title_short |
Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water |
title_full |
Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water |
title_fullStr |
Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water |
title_full_unstemmed |
Cellulose acetate based Complexation-NF membranes for the removal of Pb(II) from waste water |
title_sort |
cellulose acetate based complexation-nf membranes for the removal of pb(ii) from waste water |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-01-01 |
description |
Abstract This study investigates the removal of Pb(II) using polymer matrix membranes, cellulose acetate/vinyl triethoxysilane modified graphene oxide and gum Arabic (GuA) membranes. These complexation-NF membranes were successfully synthesized via dissolution casting method for better transport phenomenon. The varied concentrations of GuA were induced in the polymer matrix membrane. The prepared membranes M-GuA2–M-GuA10 were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscope and bio-fouling studies. Thermal stability of the membranes was determined by thermogravimetric analysis under nitrogen atmosphere. Dead end nanofiltration was carried out to study the perm- selectivity of all the membranes under varied pressure and concentration of Pb(NO3)2. The complexation-NF membrane performances were significantly improved after the addition of GuA in the polymer matrix membrane system. M-GuA8 membrane showed optimum result of permeation flux 8.6 l m−2 h−1. Rejection of Pb(II) ions was observed to be around 97.6% at pH 9 for all the membranes due to electrostatic interaction between CA and Gum Arabic. Moreover, with the passage of time, the rate of adsorption was also increased up to 15.7 mg g−1 until steady state was attained. Gum Arabic modified CA membranes can open up new possibilities in enhancing the permeability, hydrophilicity and anti-fouling properties. |
url |
https://doi.org/10.1038/s41598-020-80384-0 |
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