Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations

Separating oil-water mixtures is critical in a variety of practical applications, including the treatment of industrial wastewater, oil spill cleanups, as well as the purification of petroleum products. Among various methodologies that have been utilized, membranes are the most attractive technology...

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Autores principales:	Bishwash Shrestha, Mohammadamin Ezazi, Gibum Kwon
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	surfactant-stabilized oil-water emulsions in-air and underwater oleophobic filter gravity-driven oil-water separation coating robustness Technology T
Acceso en línea:	https://doaj.org/article/6fafbb519d674b22960c4b5479a605fe
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spelling	oai:doaj.org-article:6fafbb519d674b22960c4b5479a605fe2021-11-11T16:08:30ZDelamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations10.3390/en142174291996-1073https://doaj.org/article/6fafbb519d674b22960c4b5479a605fe2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7429https://doaj.org/toc/1996-1073Separating oil-water mixtures is critical in a variety of practical applications, including the treatment of industrial wastewater, oil spill cleanups, as well as the purification of petroleum products. Among various methodologies that have been utilized, membranes are the most attractive technology for separating oil-water emulsions. In recent years, selective wettability membranes have attracted particular attention for oil-water separations. The membrane surfaces with hydrophilic and in-air oleophobic wettability have demonstrated enhanced effectiveness for oil-water separations in comparison with underwater oleophobic membranes. However, developing a hydrophilic and in-air oleophobic surface for a membrane is not a trivial task. The coating delamination process is a critical challenge when applying these membranes for separations. Inspired by the above, in this study we utilize poly(ethylene glycol)diacrylate (PEGDA) and 1H,1H,2H,2H-heptadecafluorodecyl acrylate (F-acrylate) to fabricate a hydrophilic and in-air oleophobic coating on a filter. We utilize methacryloxypropyl trimethoxysilane (MEMO) as an adhesion promoter to enhance the adhesion of the coating to the filter. The filter demonstrates robust oil repellency preventing oil adhesion and oil fouling. Utilizing the filter, gravity-driven and continuous separations of surfactant-stabilized oil-water emulsions are demonstrated. Finally, we demonstrate that the filter can be reused multiple times upon rinsing for further oil-water separations.Bishwash ShresthaMohammadamin EzaziGibum KwonMDPI AGarticlesurfactant-stabilized oil-water emulsionsin-air and underwater oleophobic filtergravity-driven oil-water separationcoating robustnessTechnologyTENEnergies, Vol 14, Iss 7429, p 7429 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	surfactant-stabilized oil-water emulsions in-air and underwater oleophobic filter gravity-driven oil-water separation coating robustness Technology T
spellingShingle	surfactant-stabilized oil-water emulsions in-air and underwater oleophobic filter gravity-driven oil-water separation coating robustness Technology T Bishwash Shrestha Mohammadamin Ezazi Gibum Kwon Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations
description	Separating oil-water mixtures is critical in a variety of practical applications, including the treatment of industrial wastewater, oil spill cleanups, as well as the purification of petroleum products. Among various methodologies that have been utilized, membranes are the most attractive technology for separating oil-water emulsions. In recent years, selective wettability membranes have attracted particular attention for oil-water separations. The membrane surfaces with hydrophilic and in-air oleophobic wettability have demonstrated enhanced effectiveness for oil-water separations in comparison with underwater oleophobic membranes. However, developing a hydrophilic and in-air oleophobic surface for a membrane is not a trivial task. The coating delamination process is a critical challenge when applying these membranes for separations. Inspired by the above, in this study we utilize poly(ethylene glycol)diacrylate (PEGDA) and 1H,1H,2H,2H-heptadecafluorodecyl acrylate (F-acrylate) to fabricate a hydrophilic and in-air oleophobic coating on a filter. We utilize methacryloxypropyl trimethoxysilane (MEMO) as an adhesion promoter to enhance the adhesion of the coating to the filter. The filter demonstrates robust oil repellency preventing oil adhesion and oil fouling. Utilizing the filter, gravity-driven and continuous separations of surfactant-stabilized oil-water emulsions are demonstrated. Finally, we demonstrate that the filter can be reused multiple times upon rinsing for further oil-water separations.
format	article
author	Bishwash Shrestha Mohammadamin Ezazi Gibum Kwon
author_facet	Bishwash Shrestha Mohammadamin Ezazi Gibum Kwon
author_sort	Bishwash Shrestha
title	Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations
title_short	Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations
title_full	Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations
title_fullStr	Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations
title_full_unstemmed	Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations
title_sort	delamination-free in-air and underwater oil-repellent filters for oil-water separation: gravity-driven and cross-flow operations
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6fafbb519d674b22960c4b5479a605fe
work_keys_str_mv	AT bishwashshrestha delaminationfreeinairandunderwateroilrepellentfiltersforoilwaterseparationgravitydrivenandcrossflowoperations AT mohammadaminezazi delaminationfreeinairandunderwateroilrepellentfiltersforoilwaterseparationgravitydrivenandcrossflowoperations AT gibumkwon delaminationfreeinairandunderwateroilrepellentfiltersforoilwaterseparationgravitydrivenandcrossflowoperations
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Delamination-Free In-Air and Underwater Oil-Repellent Filters for Oil-Water Separation: Gravity-Driven and Cross-Flow Operations

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