Alternative electrode materials and ceramic filter minimize disinfection byproducts in point-of-use electrochemical water treatment

Yeojoon Yoon, Youmi Jung, Minhwan Kwon, Eunha Cho, Joonwun Kang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Effects of various electrodes and prefiltration to minimize disinfection byproducts (DBPs) in electrochemical water disinfection was evaluated. The target microorganism, Escherichia coli O157:H7, was effectively inactivated even applying a solar-charged storage battery for the electrolysis process. Extent of microbial inactivation decreased with lower water temperature and higher pH in the free chlorine disinfection system. The RuO2/Ti electrode was most efficient because it produced the lowest concentration of chlorate and the highest generation of free chlorine. Prefiltration using a ceramic filter inhibited formation of halogenated DBPs because it removed precursors of DBPs. For safe point-of-use water treatment, the use of a hybrid prefiltration stage with the electrolysis system is strongly recommended to reduce risks from DBPs. The system is particularly suited to use in developing regions.

Original languageEnglish
Pages (from-to)742-749
Number of pages8
JournalEnvironmental Engineering Science
Volume30
Issue number12
DOIs
Publication statusPublished - 2013 Jan 1

Fingerprint

Disinfection
Water treatment
disinfection
ceramics
Byproducts
water treatment
electrode
filter
Electrodes
Chlorine
Electrolysis
chlorine
electrokinesis
Chlorates
Water
Microorganisms
Escherichia coli
material
water temperature
microorganism

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

Cite this

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abstract = "Effects of various electrodes and prefiltration to minimize disinfection byproducts (DBPs) in electrochemical water disinfection was evaluated. The target microorganism, Escherichia coli O157:H7, was effectively inactivated even applying a solar-charged storage battery for the electrolysis process. Extent of microbial inactivation decreased with lower water temperature and higher pH in the free chlorine disinfection system. The RuO2/Ti electrode was most efficient because it produced the lowest concentration of chlorate and the highest generation of free chlorine. Prefiltration using a ceramic filter inhibited formation of halogenated DBPs because it removed precursors of DBPs. For safe point-of-use water treatment, the use of a hybrid prefiltration stage with the electrolysis system is strongly recommended to reduce risks from DBPs. The system is particularly suited to use in developing regions.",
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Alternative electrode materials and ceramic filter minimize disinfection byproducts in point-of-use electrochemical water treatment. / Yoon, Yeojoon; Jung, Youmi; Kwon, Minhwan; Cho, Eunha; Kang, Joonwun.

In: Environmental Engineering Science, Vol. 30, No. 12, 01.01.2013, p. 742-749.

Research output: Contribution to journalArticle

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