Abstract
The potential of Salmonella typhimurlum regrowth in Class A biosolid pellets and compost after land application was assessed. Mixtures of soil, soil plus biosolids, and biosolids were inoculated with two different concentrations and monitored during a period of 20 days. No Salmonella growth occurred in any of the soil/biosolid mixtures regardless of inoculum size or moisture content. No growth occurred in any of the biosolids with a moisture content of 20% except the pellets from Texas when inoculated with 10,000 colony forming units/g. Growth of Salmonella did occur in all of the Class A products under saturated conditions. Under all moisture conditions indigenous microflora increased In numbers in the biosolids, soil and biosolid/soll mixtures. In conclusion, these results suggest that while regrowth of Salmonella in biosolids may occur under saturated conditions it does not occur after Class A biosolids land application at typical agronomic rates.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 83-88 |
| Number of pages | 6 |
| Journal | Journal of Residuals Science and Technology |
| Volume | 4 |
| Issue number | 2 |
| State | Published - Apr 2007 |
ASJC Scopus subject areas
- Environmental Engineering
- Environmental Chemistry
- Waste Management and Disposal