Modification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater

Wetting and fouling have significantly affected the application of membrane distillation (MD). In this work, a dip-coating method was used for improving surface hydrophobicity of the polyetherimide (PEI) hollow fiber membrane. An air gap membrane distillation (AGMD) process was applied for treatment...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	S. A. Mousavi, Z. Arab Aboosadi, A. Mansourizadeh, B. Honarvar
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	air gap membrane distillation coating dyeing wastewater treatment polyetherimide hollow fiber membrane zonyl® ba fluorotelomer intermediate Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/55b9aa49d1e44223abaa949527a9f045
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:55b9aa49d1e44223abaa949527a9f045
record_format	dspace
spelling	oai:doaj.org-article:55b9aa49d1e44223abaa949527a9f0452021-11-06T11:10:05ZModification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater0273-12231996-973210.2166/wst.2021.201https://doaj.org/article/55b9aa49d1e44223abaa949527a9f0452021-06-01T00:00:00Zhttp://wst.iwaponline.com/content/83/12/3092https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Wetting and fouling have significantly affected the application of membrane distillation (MD). In this work, a dip-coating method was used for improving surface hydrophobicity of the polyetherimide (PEI) hollow fiber membrane. An air gap membrane distillation (AGMD) process was applied for treatment of the methylene blue (MB) solution. The porous PEI membrane was fabricated by a dry-wet spinning process and the hydrophobic 2-(Perfluoroalkyl) ethanol (Zonyl® BA) was used as the coating material. From FESEM, the modified PEI-Zonyl membrane showed an open structure with large finger-like cavities. The modified membrane displayed a narrow pore size distribution with mean pore size of 0.028 μm. The outer surface contact angle of the PEI-Zonyl membrane increased from 81.3° to 100.4° due to the formation of an ultra-thin coated layer. The pure water flux of the PEI-Zonyl membrane was slightly reduced compared to the pristine PEI membrane. A permeate flux of 6.5 kg/m2 h and MB rejection of 98% were found for the PEI-Zonyl membrane during 76 h of the AGMD operation. Adsorption of MB on the membrane surface was confirmed based on the Langmuir isotherm evaluation, AFM and FESEM analysis. The modified PEI-Zonyl membrane can be a favorable alternative for AGMD of dyeing wastewaters. HIGHLIGHTS The porous PEI membrane was modified by surface coating of Zonyl® BA.; A narrow pore size distribution with mean pore sizes of 0.028 μm was observed.; The outer surface water contact angle was increased from about 81° to 100°.; A more stable AGMD of the MB solution was found for the modified membrane.; A lower flux decline ratio was observed for the modified PEI-Zonyl membrane.;S. A. MousaviZ. Arab AboosadiA. MansourizadehB. HonarvarIWA Publishingarticleair gap membrane distillationcoatingdyeing wastewater treatmentpolyetherimide hollow fiber membranezonyl® ba fluorotelomer intermediateEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 12, Pp 3092-3109 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	air gap membrane distillation coating dyeing wastewater treatment polyetherimide hollow fiber membrane zonyl® ba fluorotelomer intermediate Environmental technology. Sanitary engineering TD1-1066
spellingShingle	air gap membrane distillation coating dyeing wastewater treatment polyetherimide hollow fiber membrane zonyl® ba fluorotelomer intermediate Environmental technology. Sanitary engineering TD1-1066 S. A. Mousavi Z. Arab Aboosadi A. Mansourizadeh B. Honarvar Modification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater
description	Wetting and fouling have significantly affected the application of membrane distillation (MD). In this work, a dip-coating method was used for improving surface hydrophobicity of the polyetherimide (PEI) hollow fiber membrane. An air gap membrane distillation (AGMD) process was applied for treatment of the methylene blue (MB) solution. The porous PEI membrane was fabricated by a dry-wet spinning process and the hydrophobic 2-(Perfluoroalkyl) ethanol (Zonyl® BA) was used as the coating material. From FESEM, the modified PEI-Zonyl membrane showed an open structure with large finger-like cavities. The modified membrane displayed a narrow pore size distribution with mean pore size of 0.028 μm. The outer surface contact angle of the PEI-Zonyl membrane increased from 81.3° to 100.4° due to the formation of an ultra-thin coated layer. The pure water flux of the PEI-Zonyl membrane was slightly reduced compared to the pristine PEI membrane. A permeate flux of 6.5 kg/m2 h and MB rejection of 98% were found for the PEI-Zonyl membrane during 76 h of the AGMD operation. Adsorption of MB on the membrane surface was confirmed based on the Langmuir isotherm evaluation, AFM and FESEM analysis. The modified PEI-Zonyl membrane can be a favorable alternative for AGMD of dyeing wastewaters. HIGHLIGHTS The porous PEI membrane was modified by surface coating of Zonyl® BA.; A narrow pore size distribution with mean pore sizes of 0.028 μm was observed.; The outer surface water contact angle was increased from about 81° to 100°.; A more stable AGMD of the MB solution was found for the modified membrane.; A lower flux decline ratio was observed for the modified PEI-Zonyl membrane.;
format	article
author	S. A. Mousavi Z. Arab Aboosadi A. Mansourizadeh B. Honarvar
author_facet	S. A. Mousavi Z. Arab Aboosadi A. Mansourizadeh B. Honarvar
author_sort	S. A. Mousavi
title	Modification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater
title_short	Modification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater
title_full	Modification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater
title_fullStr	Modification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater
title_full_unstemmed	Modification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater
title_sort	modification of porous polyetherimide hollow fiber membrane by dip-coating of zonyl® ba for membrane distillation of dyeing wastewater
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/55b9aa49d1e44223abaa949527a9f045
work_keys_str_mv	AT samousavi modificationofporouspolyetherimidehollowfibermembranebydipcoatingofzonylbaformembranedistillationofdyeingwastewater AT zarababoosadi modificationofporouspolyetherimidehollowfibermembranebydipcoatingofzonylbaformembranedistillationofdyeingwastewater AT amansourizadeh modificationofporouspolyetherimidehollowfibermembranebydipcoatingofzonylbaformembranedistillationofdyeingwastewater AT bhonarvar modificationofporouspolyetherimidehollowfibermembranebydipcoatingofzonylbaformembranedistillationofdyeingwastewater
_version_	1718443729112530944

Modification of porous polyetherimide hollow fiber membrane by dip-coating of Zonyl® BA for membrane distillation of dyeing wastewater

Ejemplares similares