Charge-patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross-linked polyvinyl alcohol
Removing salinity has always been a challenge for wastewater treatment. Utilizing nanofiltration (NF) membranes is a promising approach. However, currently available NF membranes are less effective in monovalent salt removal. In this study, work toward the initial aim of fabricating charge mosaic me...
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Elsevier
2024-12-01
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| Series: | Journal of Membrane Science Letters |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772421224000126 |
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| author | Ali Behboudi Philipp Jahn Mathias Ulbricht |
| author_facet | Ali Behboudi Philipp Jahn Mathias Ulbricht |
| author_sort | Ali Behboudi |
| collection | DOAJ |
| description | Removing salinity has always been a challenge for wastewater treatment. Utilizing nanofiltration (NF) membranes is a promising approach. However, currently available NF membranes are less effective in monovalent salt removal. In this study, work toward the initial aim of fabricating charge mosaic membranes led to charge-patterned NF-selective films on polyether sulfone (PES) or polyacrylonitrile (PAN) support membranes, with similar rejection for mono- and divalent salts. The membranes were fabricated by a two-step layer assembly of first negatively charged polystyrene sulfonate (PSS) particles immobilized in a polyvinyl alcohol (PVA) layer, followed by coating a positively charged polyethyleneimine (PEI) layer. Both PVA and PEI were crosslinked using glutaraldehyde that had initially been impregnated into the support membrane. The type of support membrane, nanoparticle, PVA, and PEI concentrations during fabrication, as well as feed pH and salt concentration, play significant roles in separation performance of obtained composite membranes. Charge-patterned NF membranes fabricated using 0.5 wt.% PVA and 0.05 wt.% PSS for assembly of the first layer followed by coating 0.5 wt.% PEI solution had even somewhat higher rejection for monovalent salt (NaCl; ∼82%) compared to multivalent salts (Na2SO4, MgSO4, and MgCl2; ∼74%), at a permeance of 5.5 LMH/bar on the PES and 3.1 LMH/bar on the PAN support membrane. |
| format | Article |
| id | doaj-art-949d1b4a72af4e3881e8acda757a69d0 |
| institution | OA Journals |
| issn | 2772-4212 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Membrane Science Letters |
| spelling | doaj-art-949d1b4a72af4e3881e8acda757a69d02025-08-20T02:31:16ZengElsevierJournal of Membrane Science Letters2772-42122024-12-014210007810.1016/j.memlet.2024.100078Charge-patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross-linked polyvinyl alcoholAli Behboudi0Philipp Jahn1Mathias Ulbricht2Lehrstuhl für Technische Chemie II, Universität Duisburg-Essen, 45141 Essen, Germany; Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, United StatesLehrstuhl für Technische Chemie II, Universität Duisburg-Essen, 45141 Essen, GermanyLehrstuhl für Technische Chemie II, Universität Duisburg-Essen, 45141 Essen, Germany; Corresponding author.Removing salinity has always been a challenge for wastewater treatment. Utilizing nanofiltration (NF) membranes is a promising approach. However, currently available NF membranes are less effective in monovalent salt removal. In this study, work toward the initial aim of fabricating charge mosaic membranes led to charge-patterned NF-selective films on polyether sulfone (PES) or polyacrylonitrile (PAN) support membranes, with similar rejection for mono- and divalent salts. The membranes were fabricated by a two-step layer assembly of first negatively charged polystyrene sulfonate (PSS) particles immobilized in a polyvinyl alcohol (PVA) layer, followed by coating a positively charged polyethyleneimine (PEI) layer. Both PVA and PEI were crosslinked using glutaraldehyde that had initially been impregnated into the support membrane. The type of support membrane, nanoparticle, PVA, and PEI concentrations during fabrication, as well as feed pH and salt concentration, play significant roles in separation performance of obtained composite membranes. Charge-patterned NF membranes fabricated using 0.5 wt.% PVA and 0.05 wt.% PSS for assembly of the first layer followed by coating 0.5 wt.% PEI solution had even somewhat higher rejection for monovalent salt (NaCl; ∼82%) compared to multivalent salts (Na2SO4, MgSO4, and MgCl2; ∼74%), at a permeance of 5.5 LMH/bar on the PES and 3.1 LMH/bar on the PAN support membrane.http://www.sciencedirect.com/science/article/pii/S2772421224000126NanofiltrationCharge-patterned membranePolyvinyl alcoholPolyethyleneimine |
| spellingShingle | Ali Behboudi Philipp Jahn Mathias Ulbricht Charge-patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross-linked polyvinyl alcohol Journal of Membrane Science Letters Nanofiltration Charge-patterned membrane Polyvinyl alcohol Polyethyleneimine |
| title | Charge-patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross-linked polyvinyl alcohol |
| title_full | Charge-patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross-linked polyvinyl alcohol |
| title_fullStr | Charge-patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross-linked polyvinyl alcohol |
| title_full_unstemmed | Charge-patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross-linked polyvinyl alcohol |
| title_short | Charge-patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross-linked polyvinyl alcohol |
| title_sort | charge patterned nanofiltration membranes with polystyrene sulfonate particles and polyethyleneimine in cross linked polyvinyl alcohol |
| topic | Nanofiltration Charge-patterned membrane Polyvinyl alcohol Polyethyleneimine |
| url | http://www.sciencedirect.com/science/article/pii/S2772421224000126 |
| work_keys_str_mv | AT alibehboudi chargepatternednanofiltrationmembraneswithpolystyrenesulfonateparticlesandpolyethyleneimineincrosslinkedpolyvinylalcohol AT philippjahn chargepatternednanofiltrationmembraneswithpolystyrenesulfonateparticlesandpolyethyleneimineincrosslinkedpolyvinylalcohol AT mathiasulbricht chargepatternednanofiltrationmembraneswithpolystyrenesulfonateparticlesandpolyethyleneimineincrosslinkedpolyvinylalcohol |