Evaluation of ion exchange pretreatment options to decrease fouling of a reverse osmosis membrane

Katrina A. Indarawis; Treavor H. Boyer

doi:10.1080/19443994.2013.867416

Evaluation of ion exchange pretreatment options to decrease fouling of a reverse osmosis membrane

Katrina A. Indarawis, Treavor H. Boyer

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

6 Scopus citations

Abstract

This research compared pretreatments by anion exchange, cation exchange, and combined ion exchange to a natural groundwater before reverse osmosis (RO) in order to determine which ion exchange process showed the greatest reduction in RO membrane fouling, quantitatively determined by flux decline. It was shown that all ion exchange pretreatments yielded similar rates of flux decline; however, anion exchange pretreated samples yielded overall lower flux meaning it was a less effective pretreatment to reduce fouling. Therefore, the removal of divalent cations, in particular calcium, from a high hardness water by cation exchange showed a greater reduction in fouling of RO compared with the removal of natural organic matter by anion exchange.

Original language	English (US)
Pages (from-to)	4603-4611
Number of pages	9
Journal	Desalination and Water Treatment
Volume	52
Issue number	25-27
DOIs	https://doi.org/10.1080/19443994.2013.867416
State	Published - Jul 2014
Externally published	Yes

Keywords

Anion exchange
Calcium
Cation exchange
Ion exchange
Membrane fouling
Natural organic matter
Reverse osmosis

ASJC Scopus subject areas

Water Science and Technology
Ocean Engineering
Pollution

Access to Document

10.1080/19443994.2013.867416

Cite this

@article{0ac8c0fe07e74947a357927d7e27ede2,

title = "Evaluation of ion exchange pretreatment options to decrease fouling of a reverse osmosis membrane",

abstract = "This research compared pretreatments by anion exchange, cation exchange, and combined ion exchange to a natural groundwater before reverse osmosis (RO) in order to determine which ion exchange process showed the greatest reduction in RO membrane fouling, quantitatively determined by flux decline. It was shown that all ion exchange pretreatments yielded similar rates of flux decline; however, anion exchange pretreated samples yielded overall lower flux meaning it was a less effective pretreatment to reduce fouling. Therefore, the removal of divalent cations, in particular calcium, from a high hardness water by cation exchange showed a greater reduction in fouling of RO compared with the removal of natural organic matter by anion exchange.",

keywords = "Anion exchange, Calcium, Cation exchange, Ion exchange, Membrane fouling, Natural organic matter, Reverse osmosis",

author = "Indarawis, {Katrina A.} and Boyer, {Treavor H.}",

note = "Funding Information: KAI was supported by a University of Florida Graduate School Fellowship. We thank the Cedar Key Water and Sewer District for assistance with sample collection. We also thank Jeremy Toms and Avni Solanki for assistance with laboratory experiments.",

year = "2014",

month = jul,

doi = "10.1080/19443994.2013.867416",

language = "English (US)",

volume = "52",

pages = "4603--4611",

journal = "Desalination and Water Treatment",

issn = "1944-3994",

publisher = "Taylor and Francis Ltd.",

number = "25-27",

}

TY - JOUR

T1 - Evaluation of ion exchange pretreatment options to decrease fouling of a reverse osmosis membrane

AU - Indarawis, Katrina A.

AU - Boyer, Treavor H.

N1 - Funding Information: KAI was supported by a University of Florida Graduate School Fellowship. We thank the Cedar Key Water and Sewer District for assistance with sample collection. We also thank Jeremy Toms and Avni Solanki for assistance with laboratory experiments.

PY - 2014/7

Y1 - 2014/7

N2 - This research compared pretreatments by anion exchange, cation exchange, and combined ion exchange to a natural groundwater before reverse osmosis (RO) in order to determine which ion exchange process showed the greatest reduction in RO membrane fouling, quantitatively determined by flux decline. It was shown that all ion exchange pretreatments yielded similar rates of flux decline; however, anion exchange pretreated samples yielded overall lower flux meaning it was a less effective pretreatment to reduce fouling. Therefore, the removal of divalent cations, in particular calcium, from a high hardness water by cation exchange showed a greater reduction in fouling of RO compared with the removal of natural organic matter by anion exchange.

AB - This research compared pretreatments by anion exchange, cation exchange, and combined ion exchange to a natural groundwater before reverse osmosis (RO) in order to determine which ion exchange process showed the greatest reduction in RO membrane fouling, quantitatively determined by flux decline. It was shown that all ion exchange pretreatments yielded similar rates of flux decline; however, anion exchange pretreated samples yielded overall lower flux meaning it was a less effective pretreatment to reduce fouling. Therefore, the removal of divalent cations, in particular calcium, from a high hardness water by cation exchange showed a greater reduction in fouling of RO compared with the removal of natural organic matter by anion exchange.

KW - Anion exchange

KW - Calcium

KW - Cation exchange

KW - Ion exchange

KW - Membrane fouling

KW - Natural organic matter

KW - Reverse osmosis

UR - http://www.scopus.com/inward/record.url?scp=84906081339&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906081339&partnerID=8YFLogxK

U2 - 10.1080/19443994.2013.867416

DO - 10.1080/19443994.2013.867416

M3 - Article

AN - SCOPUS:84906081339

SN - 1944-3994

VL - 52

SP - 4603

EP - 4611

JO - Desalination and Water Treatment

JF - Desalination and Water Treatment

IS - 25-27

ER -

Evaluation of ion exchange pretreatment options to decrease fouling of a reverse osmosis membrane

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this