Chlorate adsorption from chlor-alkali plant brine stream

Chlorates are present in the brine stream purged from chlor-alkali plants. Tests were conducted using activated carbon from coconut shell, coal or palm kernel shell to adsorb chlorate. The results show varying levels of adsorption with reduction ranging between 1.3 g/L and 1.8 g/L. This was higher t...

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Main Authors: Lakshmanan, S., Murugesan, T.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.19450 /
Published: IWA Publishing 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85024867963&doi=10.2166%2fwst.2017.182&partnerID=40&md5=b493054973aea8cd71f0e1be170f6871
http://eprints.utp.edu.my/19450/
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spelling utp-eprints.194502018-04-20T05:57:37Z Chlorate adsorption from chlor-alkali plant brine stream Lakshmanan, S. Murugesan, T. Chlorates are present in the brine stream purged from chlor-alkali plants. Tests were conducted using activated carbon from coconut shell, coal or palm kernel shell to adsorb chlorate. The results show varying levels of adsorption with reduction ranging between 1.3 g/L and 1.8 g/L. This was higher than the chlorate generation rate of that plant, recorded at 1.22 g/L, indicating that chlorate can be adequately removed by adsorption using activated carbon. Coconut based activated carbon exhibited the best adsorption of chlorate of the three types of activated carbon tested. Introducing an adsorption step prior to purging of the brine will be able to reduce chlorate content in the brine stream. The best location for introducing the adsorption step was identified to be after dechlorination of the brine and before resaturation. Introduction of such an adsorption step will enable complete recovery of the brine and prevent brine purging, which in turn will result in less release of chlorides and chlorates to the environment. © IWA Publishing 2017. IWA Publishing 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85024867963&doi=10.2166%2fwst.2017.182&partnerID=40&md5=b493054973aea8cd71f0e1be170f6871 Lakshmanan, S. and Murugesan, T. (2017) Chlorate adsorption from chlor-alkali plant brine stream. Water Science and Technology, 76 (1). pp. 87-94. http://eprints.utp.edu.my/19450/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Chlorates are present in the brine stream purged from chlor-alkali plants. Tests were conducted using activated carbon from coconut shell, coal or palm kernel shell to adsorb chlorate. The results show varying levels of adsorption with reduction ranging between 1.3 g/L and 1.8 g/L. This was higher than the chlorate generation rate of that plant, recorded at 1.22 g/L, indicating that chlorate can be adequately removed by adsorption using activated carbon. Coconut based activated carbon exhibited the best adsorption of chlorate of the three types of activated carbon tested. Introducing an adsorption step prior to purging of the brine will be able to reduce chlorate content in the brine stream. The best location for introducing the adsorption step was identified to be after dechlorination of the brine and before resaturation. Introduction of such an adsorption step will enable complete recovery of the brine and prevent brine purging, which in turn will result in less release of chlorides and chlorates to the environment. © IWA Publishing 2017.
format Article
author Lakshmanan, S.
Murugesan, T.
spellingShingle Lakshmanan, S.
Murugesan, T.
Chlorate adsorption from chlor-alkali plant brine stream
author_sort Lakshmanan, S.
title Chlorate adsorption from chlor-alkali plant brine stream
title_short Chlorate adsorption from chlor-alkali plant brine stream
title_full Chlorate adsorption from chlor-alkali plant brine stream
title_fullStr Chlorate adsorption from chlor-alkali plant brine stream
title_full_unstemmed Chlorate adsorption from chlor-alkali plant brine stream
title_sort chlorate adsorption from chlor-alkali plant brine stream
publisher IWA Publishing
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85024867963&doi=10.2166%2fwst.2017.182&partnerID=40&md5=b493054973aea8cd71f0e1be170f6871
http://eprints.utp.edu.my/19450/
_version_ 1741196208650584064
score 11.62408

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