Chemically modified chitosan polymers for bromate removal

Jianqing Liu; Wenjian Shi; Yue Liu; Wei Ou-Yang; Ran Zhao

doi:10.2166/ws.2017.001

Chemically modified chitosan polymers for bromate removal

Jianqing Liu
, Wenjian Shi
, Yue Liu
, Wei Ou-Yang
, Ran Zhao^*

^*Corresponding author for this work

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

6 Scopus citations

Abstract

Bromate is a harmful byproduct formed during drinking water disinfection processes. In this work, adsorption of bromate by natural chitosan and its chemically modified polymers has been investigated. Bromate adsorption was found between 22.73 mg/g and 43.48 mg/g. Adsorbents were analysed by Fourier transform infrared-ATR spectroscopy. It is suggested that chemical adsorption is the main bromate adsorption mechanism. By fitting theoretical results to experimental data, it is shown that the Langmuir adsorption model and the second-order kinetic model are more applicable to explain the adsorption process. Furthermore, increased bromate adsorption is found at high temperature and at low pH, while coexisting ions have little influence at low concentrations.

Original language	English
Pages (from-to)	1062-1069
Number of pages	8
Journal	Water Supply
Volume	17
Issue number	4
DOIs	https://doi.org/10.2166/ws.2017.001
State	Published - Jul 2017
Externally published	Yes

Keywords

Adsorption isotherms
Bromate adsorption
Chitosan
Pseudo-second-order kinetics model
Thermodynamics

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10.2166/ws.2017.001

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title = "Chemically modified chitosan polymers for bromate removal",

abstract = "Bromate is a harmful byproduct formed during drinking water disinfection processes. In this work, adsorption of bromate by natural chitosan and its chemically modified polymers has been investigated. Bromate adsorption was found between 22.73 mg/g and 43.48 mg/g. Adsorbents were analysed by Fourier transform infrared-ATR spectroscopy. It is suggested that chemical adsorption is the main bromate adsorption mechanism. By fitting theoretical results to experimental data, it is shown that the Langmuir adsorption model and the second-order kinetic model are more applicable to explain the adsorption process. Furthermore, increased bromate adsorption is found at high temperature and at low pH, while coexisting ions have little influence at low concentrations.",

keywords = "Adsorption isotherms, Bromate adsorption, Chitosan, Pseudo-second-order kinetics model, Thermodynamics",

author = "Jianqing Liu and Wenjian Shi and Yue Liu and Wei Ou-Yang and Ran Zhao",

note = "Publisher Copyright: {\textcopyright} 2017 IWA Publishing.",

year = "2017",

month = jul,

doi = "10.2166/ws.2017.001",

language = "英语",

volume = "17",

pages = "1062--1069",

journal = "Water Supply",

issn = "1606-9749",

publisher = "IWA Publishing",

number = "4",

}

TY - JOUR

T1 - Chemically modified chitosan polymers for bromate removal

AU - Liu, Jianqing

AU - Shi, Wenjian

AU - Liu, Yue

AU - Ou-Yang, Wei

AU - Zhao, Ran

PY - 2017/7

Y1 - 2017/7

N2 - Bromate is a harmful byproduct formed during drinking water disinfection processes. In this work, adsorption of bromate by natural chitosan and its chemically modified polymers has been investigated. Bromate adsorption was found between 22.73 mg/g and 43.48 mg/g. Adsorbents were analysed by Fourier transform infrared-ATR spectroscopy. It is suggested that chemical adsorption is the main bromate adsorption mechanism. By fitting theoretical results to experimental data, it is shown that the Langmuir adsorption model and the second-order kinetic model are more applicable to explain the adsorption process. Furthermore, increased bromate adsorption is found at high temperature and at low pH, while coexisting ions have little influence at low concentrations.

AB - Bromate is a harmful byproduct formed during drinking water disinfection processes. In this work, adsorption of bromate by natural chitosan and its chemically modified polymers has been investigated. Bromate adsorption was found between 22.73 mg/g and 43.48 mg/g. Adsorbents were analysed by Fourier transform infrared-ATR spectroscopy. It is suggested that chemical adsorption is the main bromate adsorption mechanism. By fitting theoretical results to experimental data, it is shown that the Langmuir adsorption model and the second-order kinetic model are more applicable to explain the adsorption process. Furthermore, increased bromate adsorption is found at high temperature and at low pH, while coexisting ions have little influence at low concentrations.

KW - Adsorption isotherms

KW - Bromate adsorption

KW - Chitosan

KW - Pseudo-second-order kinetics model

KW - Thermodynamics

UR - https://www.scopus.com/pages/publications/85026375705

U2 - 10.2166/ws.2017.001

DO - 10.2166/ws.2017.001

M3 - 文章

AN - SCOPUS:85026375705

SN - 1606-9749

VL - 17

SP - 1062

EP - 1069

JO - Water Supply

JF - Water Supply

IS - 4

ER -

Chemically modified chitosan polymers for bromate removal

Abstract

Keywords

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