Survival of indigenous enteric viruses during storage of waste water sludge samples
- 1 August 1986
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Microbiology
- Vol. 32 (8) , 645-648
- https://doi.org/10.1139/m86-120
Abstract
The stability of indigenous enteric viruses in samples of settled primary and mixed-liquor activated sludges was studied at 2, 23, and −70 °C. Changes of virus titer which occurred in these samples were followed during an 84-day observation period, with rates of change then calculated by least-squares regression. Virus survival was found to be statistically dependent (p ≤ 0.05) upon storage temperature but not sludge solids content. Based upon the observed rates of inactivation, the average times which would be required for a 90% decrease in virus titer are 26 days at 23 °C, 180 days at 2 °C, and 163 days at −70 °C. As a group, the rates of virus inactivation observed at 2 °C were statistically different (p ≤ 0.05) from those observed at 23 °C, but not different from those observed at −70 °C. The three study temperatures were selected to approximate holding of samples in an air-conditioned room, on wet ice (H2O), and on dry ice (CO2).This publication has 4 references indexed in Scilit:
- Round robin investigation of methods for recovering human enteric viruses from sludgeApplied and Environmental Microbiology, 1984
- A method for concentrating viruses recovered from sewage sludgesCanadian Journal of Microbiology, 1982
- PERSISTENCE OF ENTEROVIRUSES IN SEWAGE SLUDGE1977
- Inactivation of poliovirus in digested sludgeApplied and Environmental Microbiology, 1976