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FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite

Shaheen Fatima Anis, Raed Hashaikeh, Nidal Hilal

Desalination, Volume: 469

Swansea University Author: Nidal Hilal

DOI (Published version): 10.​1016/​j.​desal.​2019.​114104

Abstract

Zeolite based membranes have been extensively studied over the past decade for enhanced reverse osmosis (RO) performances. In this study, poly vinyl alcohol (PVA)-networked cellulose (NC) membranes incorporated with nano zeolite-Y were prepared through a facile slip casting approach using various na...

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Published in: Desalination
Published: 2019
URI: https://cronfa.swan.ac.uk/Record/cronfa51387
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first_indexed 2019-08-13T15:29:24Z
last_indexed 2019-09-03T14:51:32Z
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spelling 2019-09-03T09:59:57.5091567 v2 51387 2019-08-13 FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite 3acba771241d878c8e35ff464aec0342 Nidal Hilal Nidal Hilal true false 2019-08-13 FGSEN Zeolite based membranes have been extensively studied over the past decade for enhanced reverse osmosis (RO) performances. In this study, poly vinyl alcohol (PVA)-networked cellulose (NC) membranes incorporated with nano zeolite-Y were prepared through a facile slip casting approach using various nano zeolite-Y loadings from 0.05 to 1.0 wt. %. The nano zeolite was prepared through a unique ball milling process. Membrane hydrophilicity was seen to increase with increase in zeolite loading, while improved tensile strength (8.7 MPa) and tensile modulus (67MPa) were obtained on small zeolite additions of 0.05wt. %. No prominent peak shifts were observed in differential scanning calorimeter (DSC) testifying to the thermal stability of the membranes. Membranes were tested for RO using 25,000 mg/L NaCl solution. Optimum RO performance was achieved for 0.5 wt. % nano zeolite registering a salt rejection (Rs) of 99.52% with a flux increase of 34.2 % compared to the bare PVA-NC membranes. Thus, addition of nano-Y to the polymer matrix provides preferential water pathways which facilitates water flow through the membrane. In addition, the irregular crystal morphology of the nano-Y, the size exclusion principle and the ion exchange mechanism provided a high salt rejection for the PVA-NC-nano Y membranes. Journal Article Desalination 469 Polyvinyl alcohol, Networked cellulose, Nano zeolite-Y, Membranes, Reverse osmosis 15 11 2019 2019-11-15 10.​1016/​j.​desal.​2019.​114104 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-09-03T09:59:57.5091567 2019-08-13T09:19:21.9123201 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Shaheen Fatima Anis 1 Raed Hashaikeh 2 Nidal Hilal 3 0051387-03092019095927.pdf anis2019(2).pdf 2019-09-03T09:59:27.3500000 Output 9339276 application/pdf Accepted Manuscript true 2020-08-31T00:00:00.0000000 true eng
title FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite
spellingShingle FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite
Nidal Hilal
title_short FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite
title_full FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite
title_fullStr FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite
title_full_unstemmed FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite
title_sort FLux and salt rejection enhancement of polyvinyl(alcohol) reverse osmosis membranes using nano-zeolite
author_id_str_mv 3acba771241d878c8e35ff464aec0342
author_id_fullname_str_mv 3acba771241d878c8e35ff464aec0342_***_Nidal Hilal
author Nidal Hilal
author2 Shaheen Fatima Anis
Raed Hashaikeh
Nidal Hilal
format Journal article
container_title Desalination
container_volume 469
publishDate 2019
institution Swansea University
doi_str_mv 10.​1016/​j.​desal.​2019.​114104
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description Zeolite based membranes have been extensively studied over the past decade for enhanced reverse osmosis (RO) performances. In this study, poly vinyl alcohol (PVA)-networked cellulose (NC) membranes incorporated with nano zeolite-Y were prepared through a facile slip casting approach using various nano zeolite-Y loadings from 0.05 to 1.0 wt. %. The nano zeolite was prepared through a unique ball milling process. Membrane hydrophilicity was seen to increase with increase in zeolite loading, while improved tensile strength (8.7 MPa) and tensile modulus (67MPa) were obtained on small zeolite additions of 0.05wt. %. No prominent peak shifts were observed in differential scanning calorimeter (DSC) testifying to the thermal stability of the membranes. Membranes were tested for RO using 25,000 mg/L NaCl solution. Optimum RO performance was achieved for 0.5 wt. % nano zeolite registering a salt rejection (Rs) of 99.52% with a flux increase of 34.2 % compared to the bare PVA-NC membranes. Thus, addition of nano-Y to the polymer matrix provides preferential water pathways which facilitates water flow through the membrane. In addition, the irregular crystal morphology of the nano-Y, the size exclusion principle and the ion exchange mechanism provided a high salt rejection for the PVA-NC-nano Y membranes.
published_date 2019-11-15T04:03:15Z
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score 11.013148

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