Removal and inactivation of Cryptosporidium and microbial indicators by a quaternary ammonium chloride (QAC)-treated Zeolite in pilot filters

Morteza Abbaszadegan, Patricia Monteiro, Rudolf Ouwens, Hodon Ryu, Absar Alum

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

A set of pilot filters packed with Zeolite filter media treated with a quaternary ammonium chloride (QAC) were evaluated to verify the proof of concept of their combined antimicrobial capabilities. Escherichia coli was removed and inactivated the most (2.83 log), followed by MS-2 (2.75 log), Klebsiella terriena (2.21 log), PRD-1 (1.95 log), Chlorella vulgaris (1.92 log), and Cryptosporidium parvum oocysts (1.78 log). Especially, inactivation of C. parvum oocysts (1.19 log) was higher than physical removal (0.54 log). The data suggest that QAC-treated Zeolite in the pilot filters has microbial inactivation capabilities and may have useful applications in other types of filter media.

Original languageEnglish (US)
Pages (from-to)1201-1210
Number of pages10
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume41
Issue number6
DOIs
StatePublished - Jul 1 2006

Keywords

  • Antimicrobial capabilities
  • QAC-treated Zeolite filter media

ASJC Scopus subject areas

  • Environmental Engineering

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