dc.identifier.uri |
http://dx.doi.org/10.15488/15003 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/15122 |
|
dc.contributor.author |
Gu, Jiahui
|
|
dc.contributor.author |
Qu, Zhou
|
|
dc.contributor.author |
Zhang, Xiangning
|
|
dc.contributor.author |
Fan, Hongwei
|
|
dc.contributor.author |
Li, Chunxi
|
|
dc.contributor.author |
Caro, Jürgen
|
|
dc.contributor.author |
Meng, Hong
|
|
dc.date.accessioned |
2023-10-18T06:09:12Z |
|
dc.date.available |
2023-10-18T06:09:12Z |
|
dc.date.issued |
2023 |
|
dc.identifier.citation |
Gu, J.; Qu, Z.; Zhang, X.; Fan, H.; Li, C. et al.: Membrane Contact Demulsification: A Superhydrophobic ZIF-8@rGO Membrane for Water-in-Oil Emulsion Separation. In: Engineering 23 (2023), S. 73-81. DOI: https://doi.org/10.1016/j.eng.2022.02.017 |
|
dc.description.abstract |
Achieving a water–oil interface imbalance has been identified as a critical factor in the demulsification of water-in-oil emulsions. However, conventional demulsifying membranes generally break the interface balance by depending on a relatively high transmembrane pressure. Here, we present a “contact demulsification” concept to naturally and quickly achieve disruption of the water–oil interface balance. For this purpose, a novel demulsifying membrane with a high flux of the organic component has been developed via the simple vacuum assembly of zeolitic imidazolate framework-8 (ZIF-8)@reduced graphene oxide (rGO) microspheres (ZGS) on a polytetrafluoroethylene (PTFE) support, followed by immobilization processing in a polydimethylsiloxane (PDMS) crosslinking solution. Due to the micro-nano hierarchies of the ZGS, the prepared ZIF-8@rGO@PDMS/PTFE (ZGPP) membranes feature a unique superhydrophobic surface, which results in a water–oil interface imbalance when a surfactant-stabilized water-in-oil emulsion comes into contact with the membrane surface. Under a low transmembrane pressure of 0.15 bar (15 kPa), such membranes show an excellent separation efficiency (∼99.57%) and a high flux of 2254 L·m−2·h−1, even for surfactant-stabilized nanoscale water-in-toluene emulsions (with an average droplet size of 57 nm). This “contact demulsification” concept paves the way for developing next-generation demulsifying membranes for water-in-oil emulsion separation. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Beijing : Engineering Sciences Press. |
|
dc.relation.ispartofseries |
Engineering 23 (2023) |
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dc.rights |
CC BY-NC-ND 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
dc.subject |
Demulsification |
eng |
dc.subject |
Oil/water separation |
eng |
dc.subject |
Superhydrophobic membrane |
eng |
dc.subject |
Water-in-oil emulsion |
eng |
dc.subject.ddc |
600 | Technik
|
|
dc.subject.ddc |
500 | Naturwissenschaften
|
|
dc.title |
Membrane Contact Demulsification: A Superhydrophobic ZIF-8@rGO Membrane for Water-in-Oil Emulsion Separation |
eng |
dc.type |
Article |
|
dc.type |
Text |
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dc.relation.essn |
2095-8099 |
|
dc.relation.issn |
2095-8099 |
|
dc.relation.doi |
https://doi.org/10.1016/j.eng.2022.02.017 |
|
dc.bibliographicCitation.volume |
23 |
|
dc.bibliographicCitation.firstPage |
73 |
|
dc.bibliographicCitation.lastPage |
81 |
|
dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
|