Change in Microbial Numbers during Thermophilic Composting of Sewage Sludge with Reference to CO2 Evolution Rate
AUTOR(ES)
Nakasaki, Kiyohiko
RESUMO
Dewatered sewage sludge was composted in a laboratory-scale autothermal reactor in which a constant temperature of 60°C was kept as long as possible by regulating the air feed rate. The change in CO2 evolution rate was measured continuously from the start up through the cessation of compositing. The succession of mesophilic bacteria, thermophilic bacteria, and thermophilic actinomycetes was also observed during the composting. Specific CO2 evolution rates of thermophilic bacteria and actinomycetes in the constant-temperature region of 60°C were assessed quantitatively. It was found that the CO2 evolution rate was attributed to thermophilic bacteria at the initial stage of 60°C and to thermophilic actinomycetes at the later stage of 60°C.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=238341Documentos Relacionados
- Effect of seeding during thermophilic composting of sewage sludge.
- Characteristics of Mesophilic Bacteria Isolated during Thermophilic Composting of Sewage Sludge
- Occurrence of Aspergillus fumigatus during composting of sewage sludge.
- Biokinetic analyses of adaptation and succession: microbial activity in composting municipal sewage sludge.
- Physical and Chemical Correlates of Microbial Activity and Biomass in Composting Municipal Sewage Sludge