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Article: Making waves: Why do we need ultra-permeable nanofiltration membranes for water treatment?

TitleMaking waves: Why do we need ultra-permeable nanofiltration membranes for water treatment?
Authors
KeywordsMembrane materials
New processes
Ultra-permeable nanofiltration membranes
Water/wastewater treatment
Issue Date22-Feb-2023
PublisherElsevier Ltd.
Citation
Water Research X, 2023, v. 19 How to Cite?
Abstract

Over the last few decades, developing ultra-permeable nanofiltration (UPNF) membranes has been a focus research area to support NF-based water treatment. Nevertheless, there have been ongoing debates and doubts on the need for UPNF membranes. In this work, we share our perspectives on why UPNF membranes are desired for water treatment. We analyze the specific energy consumption (SEC) of NF processes under various application scenarios, which reveals the potential of UPNF membranes for reducing SEC by 1/3 to 2/3 depending on the prevailing transmembrane osmotic pressure difference. Furthermore, UPNF membranes could potentially enable new process opportunities. Vacuum-driven submerged NF-modules could be retrofitted to existing water/ wastewater treatment plants, offering lower SEC and lower cost compared to conventional NF systems. Their use in submerged membrane bioreactors (NF-MBR) can recycle wastewater into high-quality permeate water, which enables energy-efficient water reuse in a single treatment step. The ability for retaining soluble organics may further extend the application of NF-MBR for anaerobic treatment of dilute municipal wastewater. Critical analysis of membrane development reveals huge rooms for UPNF membranes to attain improved selectivity and antifouling performance. Our perspective paper offers important insights for the future development of NF-based water treatment technology, which could potentially lead to a paradigm shift in this burgeoning field.


Persistent Identifierhttp://hdl.handle.net/10722/331259
ISSN
2023 Impact Factor: 7.2
2023 SCImago Journal Rankings: 1.736
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYang, Z-
dc.contributor.authorWu, CY-
dc.contributor.authorTang, CY-
dc.date.accessioned2023-09-21T06:54:07Z-
dc.date.available2023-09-21T06:54:07Z-
dc.date.issued2023-02-22-
dc.identifier.citationWater Research X, 2023, v. 19-
dc.identifier.issn2589-9147-
dc.identifier.urihttp://hdl.handle.net/10722/331259-
dc.description.abstract<p>Over the last few decades, developing ultra-permeable nanofiltration (UPNF) membranes has been a focus research area to support NF-based water treatment. Nevertheless, there have been ongoing debates and doubts on the need for UPNF membranes. In this work, we share our perspectives on why UPNF membranes are desired for water treatment. We analyze the specific energy consumption (SEC) of NF processes under various application scenarios, which reveals the potential of UPNF membranes for reducing SEC by 1/3 to 2/3 depending on the prevailing transmembrane osmotic pressure difference. Furthermore, UPNF membranes could potentially enable new process opportunities. Vacuum-driven submerged NF-modules could be retrofitted to existing water/ wastewater treatment plants, offering lower SEC and lower cost compared to conventional NF systems. Their use in submerged membrane bioreactors (NF-MBR) can recycle wastewater into high-quality permeate water, which enables energy-efficient water reuse in a single treatment step. The ability for retaining soluble organics may further extend the application of NF-MBR for anaerobic treatment of dilute municipal wastewater. Critical analysis of membrane development reveals huge rooms for UPNF membranes to attain improved selectivity and antifouling performance. Our perspective paper offers important insights for the future development of NF-based water treatment technology, which could potentially lead to a paradigm shift in this burgeoning field.</p>-
dc.languageeng-
dc.publisherElsevier Ltd.-
dc.relation.ispartofWater Research X-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectMembrane materials-
dc.subjectNew processes-
dc.subjectUltra-permeable nanofiltration membranes-
dc.subjectWater/wastewater treatment-
dc.titleMaking waves: Why do we need ultra-permeable nanofiltration membranes for water treatment?-
dc.typeArticle-
dc.identifier.doi10.1016/j.wroa.2023.100172-
dc.identifier.pmid36860551-
dc.identifier.scopuseid_2-s2.0-85148664341-
dc.identifier.volume19-
dc.identifier.eissn2589-9147-
dc.identifier.isiWOS:001015451100001-
dc.publisher.placeAMSTERDAM-
dc.identifier.issnl2589-9147-

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