A new technique to fabricate high-performance biologically inspired membranes for water treatment

Priyesh Wagh; Gwenn Parungao; Ronald E. Viola; Isabel C. Escobar

doi:10.1016/j.seppur.2015.10.073

A new technique to fabricate high-performance biologically inspired membranes for water treatment

Priyesh Wagh, Gwenn Parungao, Ronald E. Viola, Isabel C. Escobar

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Aquaporin, a highly selective water channel protein, has received worldwide attention because of its potential to form biomimetic membranes with high flux and rejection for water reuse and desalination. In this study, purified aquaporins were incorporated into the active layer of the polybenzimidazole (PBI) nanofiltration membrane. Aquaporins were dispersed in gum arabic and embedded in amphiphilic polyvinyl alcohol with alkyl side chains (PVA-alkyl). PVA-alkyl embedded with treated aquaporins was then attached to flat sheet PBI membranes using carbodiimide chemistry. PVA-alkyl acted as support for aquaporins to prevent their chemical alteration and also gave the membranes mechanical strength. It was found that membranes modified with PVA-alkyl-AqpZ displayed lower flux declines and higher flux recoveries as compared to unmodified PBI membranes. Higher protein and salt rejections were also observed using PVA-alkyl-AqpZ modified membranes as compared to unmodified PBI membranes.

Original language	English
Pages (from-to)	754-765
Number of pages	12
Journal	Separation and Purification Technology
Volume	156
DOIs	https://doi.org/10.1016/j.seppur.2015.10.073
State	Published - Dec 17 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Funding

The authors want to acknowledge the sources of funding, NSF 1308095 and USGS 104(b): Ohio Water Development Authority GRT00028988/60040357 for funding this project. PBI Performance Products Inc. is thanked for supplying the PBI dope for the study.

Funders	Funder number
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	GRT00028988/60040357, 1308095, USGS 104

Keywords

Aquaporin
Biomimetic
Nanofiltration
Water purification

ASJC Scopus subject areas

Analytical Chemistry
Filtration and Separation

Access to Document

10.1016/j.seppur.2015.10.073

Cite this

@article{ac143702c8004591a5d5f82fd7302c74,

title = "A new technique to fabricate high-performance biologically inspired membranes for water treatment",

abstract = "Aquaporin, a highly selective water channel protein, has received worldwide attention because of its potential to form biomimetic membranes with high flux and rejection for water reuse and desalination. In this study, purified aquaporins were incorporated into the active layer of the polybenzimidazole (PBI) nanofiltration membrane. Aquaporins were dispersed in gum arabic and embedded in amphiphilic polyvinyl alcohol with alkyl side chains (PVA-alkyl). PVA-alkyl embedded with treated aquaporins was then attached to flat sheet PBI membranes using carbodiimide chemistry. PVA-alkyl acted as support for aquaporins to prevent their chemical alteration and also gave the membranes mechanical strength. It was found that membranes modified with PVA-alkyl-AqpZ displayed lower flux declines and higher flux recoveries as compared to unmodified PBI membranes. Higher protein and salt rejections were also observed using PVA-alkyl-AqpZ modified membranes as compared to unmodified PBI membranes.",

keywords = "Aquaporin, Biomimetic, Nanofiltration, Water purification",

author = "Priyesh Wagh and Gwenn Parungao and Viola, \{Ronald E.\} and Escobar, \{Isabel C.\}",

year = "2015",

month = dec,

day = "17",

doi = "10.1016/j.seppur.2015.10.073",

language = "English",

volume = "156",

pages = "754--765",

}

TY - JOUR

T1 - A new technique to fabricate high-performance biologically inspired membranes for water treatment

AU - Wagh, Priyesh

AU - Parungao, Gwenn

AU - Viola, Ronald E.

AU - Escobar, Isabel C.

PY - 2015/12/17

Y1 - 2015/12/17

N2 - Aquaporin, a highly selective water channel protein, has received worldwide attention because of its potential to form biomimetic membranes with high flux and rejection for water reuse and desalination. In this study, purified aquaporins were incorporated into the active layer of the polybenzimidazole (PBI) nanofiltration membrane. Aquaporins were dispersed in gum arabic and embedded in amphiphilic polyvinyl alcohol with alkyl side chains (PVA-alkyl). PVA-alkyl embedded with treated aquaporins was then attached to flat sheet PBI membranes using carbodiimide chemistry. PVA-alkyl acted as support for aquaporins to prevent their chemical alteration and also gave the membranes mechanical strength. It was found that membranes modified with PVA-alkyl-AqpZ displayed lower flux declines and higher flux recoveries as compared to unmodified PBI membranes. Higher protein and salt rejections were also observed using PVA-alkyl-AqpZ modified membranes as compared to unmodified PBI membranes.

AB - Aquaporin, a highly selective water channel protein, has received worldwide attention because of its potential to form biomimetic membranes with high flux and rejection for water reuse and desalination. In this study, purified aquaporins were incorporated into the active layer of the polybenzimidazole (PBI) nanofiltration membrane. Aquaporins were dispersed in gum arabic and embedded in amphiphilic polyvinyl alcohol with alkyl side chains (PVA-alkyl). PVA-alkyl embedded with treated aquaporins was then attached to flat sheet PBI membranes using carbodiimide chemistry. PVA-alkyl acted as support for aquaporins to prevent their chemical alteration and also gave the membranes mechanical strength. It was found that membranes modified with PVA-alkyl-AqpZ displayed lower flux declines and higher flux recoveries as compared to unmodified PBI membranes. Higher protein and salt rejections were also observed using PVA-alkyl-AqpZ modified membranes as compared to unmodified PBI membranes.

KW - Aquaporin

KW - Biomimetic

KW - Nanofiltration

KW - Water purification

UR - https://www.scopus.com/pages/publications/84960407521

UR - https://www.scopus.com/inward/citedby.url?scp=84960407521&partnerID=8YFLogxK

U2 - 10.1016/j.seppur.2015.10.073

DO - 10.1016/j.seppur.2015.10.073

M3 - Article

AN - SCOPUS:84960407521

SN - 1383-5866

VL - 156

SP - 754

EP - 765

JO - Separation and Purification Technology

JF - Separation and Purification Technology

ER -

A new technique to fabricate high-performance biologically inspired membranes for water treatment

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this