Characteristics of Mesophilic Bacteria Isolated during Thermophilic Composting of Sewage Sludge
AUTOR(ES)
Nakasaki, Kiyohiko
RESUMO
The degree of inactivation by UV irradiation was different between vegetative cells and spores of bacteria isolated from sewage sludge composting at 60°C. By using this property, a method to estimate the spore ratio of a mixture of vegetative cells and spores was presented. This UV irradiation method was applied to the estimation of the spore ratio of sewage sludge compost samples collected at several stages of composting. The spore ratio of mesophilic bacteria in the samples obtained at the thermophilic stage of 60°C was 40% at most. The vegetative form of mesophilic bacteria showed a thermotolerance property at 60°C by forming colonies but showed no respiratory activity at that temperature.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=238342Documentos Relacionados
- Effect of seeding during thermophilic composting of sewage sludge.
- Change in Microbial Numbers during Thermophilic Composting of Sewage Sludge with Reference to CO2 Evolution Rate
- Occurrence of Aspergillus fumigatus during composting of sewage sludge.
- Effect of Temperature on Composting of Sewage Sludge
- Composting sewage sludge with green waste from tree pruning