Impact of halogen based disinfectants in seawater on polyamide RO membranes

Hilla Shemer; Raphael Semiat

doi:10.1016/j.desal.2010.05.056

Impact of halogen based disinfectants in seawater on polyamide RO membranes

Hilla Shemer^*, Raphael Semiat

^*Corresponding author for this work

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

25 Scopus citations

Abstract

The effect of halogen based disinfectants including monochloramines (NH₂Cl), free chlorine (HOCl/OCl^-), and free oxidants (mixture of HOCl/OCl^- and HOBr/OBr) on polyamide membrane was studied in synthetic Ocean seawater. Formation and stability of these oxidants were also examined. Permeability and salt rejection of flat sheet polyamide RO membranes following exposure to the halogen based oxidants were compared to the baseline performance of unexposed membranes. The ratio between free chlorine and free bromine was found to depend on the ratio between the bromides, naturally found in seawater, and the added chlorine. Bromide enhanced the degradation of monochloramines but did not affect the stability of free chlorine. All the oxidants damaged the polyamide membranes studied while the free oxidants appeared to be the most aggressive.

Original language	English
Pages (from-to)	179-183
Number of pages	5
Journal	Desalination
Volume	273
Issue number	1
DOIs	https://doi.org/10.1016/j.desal.2010.05.056
State	Published - 1 Jun 2011
Externally published	Yes

Keywords

Bromine
Chloramines
Chlorination
Degradation
Oxidation
Reverse osmosis

Access to Document

10.1016/j.desal.2010.05.056

Fingerprint Dive into the research topics of 'Impact of halogen based disinfectants in seawater on polyamide RO membranes'. Together they form a unique fingerprint.

Cite this

@article{49bd5893f5b3457085cbc0a57e092f08,

title = "Impact of halogen based disinfectants in seawater on polyamide RO membranes",

abstract = "The effect of halogen based disinfectants including monochloramines (NH2Cl), free chlorine (HOCl/OCl-), and free oxidants (mixture of HOCl/OCl- and HOBr/OBr) on polyamide membrane was studied in synthetic Ocean seawater. Formation and stability of these oxidants were also examined. Permeability and salt rejection of flat sheet polyamide RO membranes following exposure to the halogen based oxidants were compared to the baseline performance of unexposed membranes. The ratio between free chlorine and free bromine was found to depend on the ratio between the bromides, naturally found in seawater, and the added chlorine. Bromide enhanced the degradation of monochloramines but did not affect the stability of free chlorine. All the oxidants damaged the polyamide membranes studied while the free oxidants appeared to be the most aggressive.",

keywords = "Bromine, Chloramines, Chlorination, Degradation, Oxidation, Reverse osmosis",

author = "Hilla Shemer and Raphael Semiat",

year = "2011",

month = jun,

day = "1",

doi = "10.1016/j.desal.2010.05.056",

language = "英语",

volume = "273",

pages = "179--183",

journal = "Desalination",

issn = "0011-9164",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Impact of halogen based disinfectants in seawater on polyamide RO membranes

AU - Shemer, Hilla

AU - Semiat, Raphael

PY - 2011/6/1

Y1 - 2011/6/1

N2 - The effect of halogen based disinfectants including monochloramines (NH2Cl), free chlorine (HOCl/OCl-), and free oxidants (mixture of HOCl/OCl- and HOBr/OBr) on polyamide membrane was studied in synthetic Ocean seawater. Formation and stability of these oxidants were also examined. Permeability and salt rejection of flat sheet polyamide RO membranes following exposure to the halogen based oxidants were compared to the baseline performance of unexposed membranes. The ratio between free chlorine and free bromine was found to depend on the ratio between the bromides, naturally found in seawater, and the added chlorine. Bromide enhanced the degradation of monochloramines but did not affect the stability of free chlorine. All the oxidants damaged the polyamide membranes studied while the free oxidants appeared to be the most aggressive.

AB - The effect of halogen based disinfectants including monochloramines (NH2Cl), free chlorine (HOCl/OCl-), and free oxidants (mixture of HOCl/OCl- and HOBr/OBr) on polyamide membrane was studied in synthetic Ocean seawater. Formation and stability of these oxidants were also examined. Permeability and salt rejection of flat sheet polyamide RO membranes following exposure to the halogen based oxidants were compared to the baseline performance of unexposed membranes. The ratio between free chlorine and free bromine was found to depend on the ratio between the bromides, naturally found in seawater, and the added chlorine. Bromide enhanced the degradation of monochloramines but did not affect the stability of free chlorine. All the oxidants damaged the polyamide membranes studied while the free oxidants appeared to be the most aggressive.

KW - Bromine

KW - Chloramines

KW - Chlorination

KW - Degradation

KW - Oxidation

KW - Reverse osmosis

UR - http://www.scopus.com/inward/record.url?scp=79953053636&partnerID=8YFLogxK

U2 - 10.1016/j.desal.2010.05.056

DO - 10.1016/j.desal.2010.05.056

M3 - 文章

AN - SCOPUS:79953053636

VL - 273

SP - 179

EP - 183

JO - Desalination

JF - Desalination

SN - 0011-9164

IS - 1

ER -

Impact of halogen based disinfectants in seawater on polyamide RO membranes

Abstract

Keywords

Access to Document

Other files and links

Cite this