| Main Title |
Disinfection of Bacteria Attached to Granular Activated Carbon. |
| Author |
LeChevallier, M. W. ;
Hassenauer, T. S. ;
Camper, A. K. ;
McFeters, G. A. ;
|
| CORP Author |
Montana State Univ., Bozeman. Dept. of Microbiology.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab. |
| Year Published |
1984 |
| Report Number |
EPA-R-810015; EPA/600/J-84/370; |
| Stock Number |
PB86-188174 |
| Additional Subjects |
Microorganisms ;
Disinfection ;
Chlorine ;
Bacteria ;
Carbon ;
Particles ;
Reprints ;
Water pollution control
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB86-188174 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
8p |
| Abstract |
Heterotrophic plate count bacteria, coliform organisms, and pathogenic microorganisms attached to granular activated carbon (GAC) particles were examined for their susceptibility to chlorine disinfection. When these bacteria were grown on carbon particles and then disinfected with 2.0 mg of chlorine per liter (1.4 to 1.6 mg of free chlorine residual per liter after 1 hr) for 1 hr, no significant decrease in viable counts was observed. Washed cells attached to the surface of GAC particles showed similar resistance to chlorine, but a progressive increase in sublethal injury was found. Observations made by scanning electron microscope indicated that GAC was colonized by bacteria that grow in cracks and crevices and are coated by an extracellular slime layer. These data suggest a possible mechanism by which treatment and disinfection barriers can be penetrated and pathogenic bacteria may enter drinking water supplies. |
| Supplementary Notes |
Pub. in Applied and Environmental Microbiology, v48 n5 p918-923 Nov 84. Sponsored by Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Disinfection of Bacteria Attached to Granular Activated Carbon. |
| PUB Date Free Form |
c1984 |
| Category Codes |
6M; 68D; 57K |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/14 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
617120676 |
| Origin |
NTIS |
| Type |
CAT |
