File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Multi-layer structure toward simultaneous enhancement of forward osmosis membrane separation performance and anti-biofouling property

TitleMulti-layer structure toward simultaneous enhancement of forward osmosis membrane separation performance and anti-biofouling property
Authors
KeywordsCarbon nanotubes
Forward osmosis
Interlayer
Membrane biofouling
MXene
Issue Date11-Jun-2023
PublisherElsevier
Citation
Journal of Membrane Science, 2023, v. 683 How to Cite?
AbstractBiofouling is a critical issue in membrane-based water-treatment processes because the feed solution retains microorganisms despite rigorous pretreatment. The forward osmosis (FO) process has a drawback of severe biofouling tendency when the active layer faces the draw solution. Here, we fabricated a thin-film nanocomposite membrane with a multilayer structure consisting of an MXene/carbon nanotubes (MXene/CNT) interlayer and a CNT back layer (TFNi-CNT). The interlayer structure significantly enhanced the membrane separation performance whereas the CNT back layer did not significantly hamper the performance. The biofilm formed on the CNT back layer surface was reduced by approximately 90% compared to that on the pristine substrate, indicating that the CNT back layer has superior antibiofilm properties. The water flux of the TFNi-CNT membrane was well-maintained (approximately 46%) and reversibly recovered through facile physical flushing, even after four dynamic biofouling cycles, whereas that of the pristine membrane was reduced to approximately 10%. These results indicated that the TFNi-CNT membrane possesses excellent resistance to biofouling. The CNT layer acts as a barrier that effectively prevents bacteria from entering the inner porous substrate, thus alleviating the detrimental biofilm-enhanced internal concentration polarization. This study provides new insights into the rational design and fabrication of FO membranes to mitigate biofouling.
Persistent Identifierhttp://hdl.handle.net/10722/331242
ISSN
2023 Impact Factor: 8.4
2023 SCImago Journal Rankings: 1.848
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, PF-
dc.contributor.authorSarkar, P-
dc.contributor.authorYun, ET-
dc.contributor.authorLee, JH-
dc.contributor.authorTang, CY-
dc.contributor.authorPark, HD-
dc.date.accessioned2023-09-21T06:53:59Z-
dc.date.available2023-09-21T06:53:59Z-
dc.date.issued2023-06-11-
dc.identifier.citationJournal of Membrane Science, 2023, v. 683-
dc.identifier.issn0376-7388-
dc.identifier.urihttp://hdl.handle.net/10722/331242-
dc.description.abstractBiofouling is a critical issue in membrane-based water-treatment processes because the feed solution retains microorganisms despite rigorous pretreatment. The forward osmosis (FO) process has a drawback of severe biofouling tendency when the active layer faces the draw solution. Here, we fabricated a thin-film nanocomposite membrane with a multilayer structure consisting of an MXene/carbon nanotubes (MXene/CNT) interlayer and a CNT back layer (TFNi-CNT). The interlayer structure significantly enhanced the membrane separation performance whereas the CNT back layer did not significantly hamper the performance. The biofilm formed on the CNT back layer surface was reduced by approximately 90% compared to that on the pristine substrate, indicating that the CNT back layer has superior antibiofilm properties. The water flux of the TFNi-CNT membrane was well-maintained (approximately 46%) and reversibly recovered through facile physical flushing, even after four dynamic biofouling cycles, whereas that of the pristine membrane was reduced to approximately 10%. These results indicated that the TFNi-CNT membrane possesses excellent resistance to biofouling. The CNT layer acts as a barrier that effectively prevents bacteria from entering the inner porous substrate, thus alleviating the detrimental biofilm-enhanced internal concentration polarization. This study provides new insights into the rational design and fabrication of FO membranes to mitigate biofouling.-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofJournal of Membrane Science-
dc.subjectCarbon nanotubes-
dc.subjectForward osmosis-
dc.subjectInterlayer-
dc.subjectMembrane biofouling-
dc.subjectMXene-
dc.titleMulti-layer structure toward simultaneous enhancement of forward osmosis membrane separation performance and anti-biofouling property-
dc.typeArticle-
dc.identifier.doi10.1016/j.memsci.2023.121804-
dc.identifier.scopuseid_2-s2.0-85161629992-
dc.identifier.volume683-
dc.identifier.eissn1873-3123-
dc.identifier.isiWOS:001027238400001-
dc.publisher.placeAMSTERDAM-
dc.identifier.issnl0376-7388-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats