| Main Title |
Acid-fast bacteria and yeasts as indicators of disinfection efficiency / |
| Author |
Engelbrecht, Richard S., ;
Haas, Charles N. ;
Shular, Jeffrey A. ;
Dunn, David L. ;
Roy, Dipak
|
| Other Authors |
| Author |
Title of a Work |
| Haas, Charles N., |
| Shular, Jeffrey A, |
| Dunn, David L., |
| Dipak, Roy, |
| Lalchandani, Ajit, |
| Severin, Blaine F., |
| Farooq, Shukat, |
| Engelbrecht, Richard S. |
|
| CORP Author |
Illinois Univ. at Urbana-Champaign. Dept. of Civil Engineering.;Municipal Environmental Research Lab., Cincinnati, OH. |
| Publisher |
Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory ; For sale by the National Technical Information Service, |
| Year Published |
1979 |
| Report Number |
EPA-600/2-79-091 |
| Stock Number |
PB80-124795 |
| OCLC Number |
06535316 |
| Subjects |
Yeast ;
Ozonization ;
Chlorination ;
Drinking water
|
| Additional Subjects |
Bacteria ;
Yeasts ;
Disinfection ;
Potable water ;
Indicator species ;
Efficiency ;
Microorganism control(Water) ;
Chlorination ;
Ozonization ;
Water treatment ;
Coliform bacteria ;
Evaluation ;
Bioindicators ;
Drinking water ;
Candida parapsilosis ;
Mycobacterium fortuitum
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EHAM |
TD747.A34 |
|
Region 1 Library/Boston,MA |
04/29/2016 |
| EJBD |
EPA 600-2-79-091 |
|
Headquarters Library/Washington,DC |
09/15/2014 |
| EKBD |
EPA-600/2-79-091 |
|
Research Triangle Park Library/RTP, NC |
09/07/2001 |
| ELBD ARCHIVE |
EPA 600-2-79-091 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
DISPERSAL |
| ESAD |
EPA 600-2-79-091 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB80-124795 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
xii, 143 pages : illustrations ; 28 cm. |
| Abstract |
Since the coliform group of organisms is considered to be less resistant to chlorine than some bacterial and viral pathogens, the utility of both yeast and acid-fast oganisms as potntial indicators of disinfection efficiency was evaluated. In most laboratory studies these two groups of organisms were represented by Candida parapsilosis and Mycobacterium fortuitum, respectively. The relative resistance of the rest organisms to free chlorine was: acid fast greater than yeast greater than coliforms. The increased chlorine resistance of these organisms appeared to be the result of the thickness and impermeability of the cell wall. It was concluded that the primary mode of action of chlorine in disinfection was disruption of the cell membrane with a resultant change in cell permeability and physical damage to the cell DNA. Resistance to ozonation was also studied. Variations in pH between 5 and 10 did not significantly affect organism survival of either yearor acid-fast organisms using constant ozone residuals, while increasing temperatures increased the inactivation of both organisms. Large volume sampling and enumeration techniques were developed for the yeasts and acid-fast organisms using membrane filtration which enabled the enumeration of these organisms at the relatively low densities found in finished drinking water. |
| Notes |
EPA-600/2-79-091. Includes bibliographical references. |
| Place Published |
Cincinnati, Ohio |
| Corporate Au Added Ent |
United States. Army Medical Research and Development Command,; United States. Environmental Protection Agency,; Municipal Environmental Research Laboratory,; University of Illinois at Urbana-Champaign. Department of Civil Engineering, |
| Title Ser Add Ent |
Research reporting series. Environmental protection technology. |
| PUB Date Free Form |
1979 |
| Series Title Untraced |
Environmental protection technology series |
| NTIS Prices |
PC A08/MF A01 |
| BIB Level |
m |
| Medium |
unmediated |
| Content |
text |
| Carrier |
volume |
| Cataloging Source |
OCLC/T |
| Merged OCLC records |
1225741984 |
| OCLC Time Stamp |
20181217054159 |
| Language |
eng |
| SUDOCS Number |
EP 1.23/2:600/2-79-091 |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
02196cam 2200529Ii 45010 |
