Inactivation of Escherichia coli and coliphage MS-2 by chloramine and copper

Persistent Link:
http://hdl.handle.net/10150/277945
Title:
Inactivation of Escherichia coli and coliphage MS-2 by chloramine and copper
Author:
Zhou, Xia, 1953-
Issue Date:
1991
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The efficacy of chloramine in the presence of copper chloride was evaluated for the inactivation of an indicator bacteria Escherichia coli and coliphage MS-2. Both microorganisms were exposed to chloramine with and without copper chloride. Results showed an increase in the inactivation rate of Escherichia coli and MS-2 phage with an increasing concentration of chloramine. To achieve a 99 percent reduction in the number of Escherichia coli, an exposure of 46, 21, 6, and 5 minutes was necessary for 1, 2.5, 5, and 10 mg chloramine/L, respectively. A 99 percent reduction of MS-2 phage occurred after 60 and 25 minutes of exposure to 5 and 10 mg chloramine/L. Chloramine in the presence of copper increased the inactivation rate of Escherichia coli and MS-2 phage. The time needed for 99 percent inactivation of E. coli and MS-2 phage was reduced. Copper increases the inactivation rate of bacteria and viruses by chloramine. (Abstract shortened with permission of author.)
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Biology, Microbiology.; Environmental Sciences.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona
Advisor:
Price, Ralph L.; Gerba, Charles P.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleInactivation of Escherichia coli and coliphage MS-2 by chloramine and copperen_US
dc.creatorZhou, Xia, 1953-en_US
dc.contributor.authorZhou, Xia, 1953-en_US
dc.date.issued1991en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe efficacy of chloramine in the presence of copper chloride was evaluated for the inactivation of an indicator bacteria Escherichia coli and coliphage MS-2. Both microorganisms were exposed to chloramine with and without copper chloride. Results showed an increase in the inactivation rate of Escherichia coli and MS-2 phage with an increasing concentration of chloramine. To achieve a 99 percent reduction in the number of Escherichia coli, an exposure of 46, 21, 6, and 5 minutes was necessary for 1, 2.5, 5, and 10 mg chloramine/L, respectively. A 99 percent reduction of MS-2 phage occurred after 60 and 25 minutes of exposure to 5 and 10 mg chloramine/L. Chloramine in the presence of copper increased the inactivation rate of Escherichia coli and MS-2 phage. The time needed for 99 percent inactivation of E. coli and MS-2 phage was reduced. Copper increases the inactivation rate of bacteria and viruses by chloramine. (Abstract shortened with permission of author.)en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectBiology, Microbiology.en_US
dc.subjectEnvironmental Sciences.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorPrice, Ralph L.en_US
dc.contributor.advisorGerba, Charles P.en_US
dc.identifier.proquest1345420en_US
dc.identifier.bibrecord.b27028914en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.