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Measuring Biomethane Potential of Food Scrap Waste Anaerobically Co-Digested with Waste-Activated Sludge Using Respirometry
Published on: April 26, 2024
[Variation of oxygen concentration during aerobic composting of pig manure]
Tongbin Chen1, Yuqi Zheng, Ding Gao
1Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China. chentb@igsnrr.ac.cn
Abstract:
Analysis with oxygen monitoring system on the variation of oxygen concentration at different stages of pig manure composting showed that in a short time after ventilation at different composting stages, the oxygen concentration increased by 17% or more, and the oxygen consumption rate at temperature increasing stage and at the beginning of high temperature stage could reach up to more than 900 microl x L(-1) x s(-1), while decreased at the stages of high temperature and of dehydration as the composting process going on. The oxygen consumption rate decreased to lower than 100 microl x L(-1) x s(-1) after 5-7 days at the stage of high temperature. A ventilation strategy was proposed based on the analyses.
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