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Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock
Published on: May 6, 2010
Microbial characterization during composting of biowaste.
Christina Chroni1, Adamantini Kyriacou, Irene Georgaki
1Department of Geography, Harokopio University, 70 El. Venizelou, 176 71 Athens, Greece.
Waste Management (New York, N.Y.)
|January 27, 2009
Summary
This study on biowaste composting found that microbial populations shift predictably with temperature and time. Key factors like pH, C/N ratio, and gas concentrations correlate with composting progress, influencing microbial succession.
Area of Science:
- Environmental Science
- Microbiology
- Waste Management
Background:
- Windrow composting is a common method for managing source-separated biowaste.
- Understanding microbial dynamics is crucial for optimizing composting efficiency and pathogen reduction.
Purpose of the Study:
- To investigate abiotic factors, gas concentrations, and microbial group succession during windrow composting.
- To correlate these parameters with composting time and temperature phases.
Main Methods:
- Pilot-scale windrow composting of biowaste.
- Monitoring of abiotic factors (pH, C/N ratio, VS content).
- Measurement of gas concentrations (O2, CO2) and microbial group populations (bacteria, fungi, E. coli).
Main Results:
- Abiotic factors and gas concentrations showed typical composting behavior correlated with time.
- Most microbial groups peaked towards the end of the thermophilic phase.
- Escherichia coli persisted for over two months despite high temperatures.
Conclusions:
- The timing, peak temperature, and duration of the thermophilic stage significantly impact microbial succession.
- Composting time, temperature, and microbial dynamics are interconnected.
- Effective composting requires careful management of the thermophilic phase for optimal microbial activity and pathogen inactivation.
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