Main influencing factors of TOC biodegradation in aerobic composting

Main effect factors of biodegradation of TOC, which included temperature, moisture content, particle size and C/N ratio in aerobic composting, were investigated by running a set of bench-scale, laboratory experiments. This study showed the optimum process conditions were a temperature of 40-50°C, moisture content of 50%, particle size of 30 mm and C/N ratio of 30:1. The experiment results examined that former factors should be carefully controlled in proper range to ensure composting reaction. In addition, the factors were compared by orthogonal experimental design. The results showed that moisture content was the most effective factor to TOC biodegradation, C/N ratio was next, temperature and particle size was the least.