摘要
Food waste is a significant contributor to greenhouse gas emissions when it ends up in landfills.Composting turns out to be a sustainable solution to this problem,but it requires controlled and continuous airflow for optimal performance.This study focused on the effect of aeration rates and airflow directions on food waste composting using a closed system with forced aeration.Air was entered into the composting vessel in three directions,which were upward,downward,and a combination of both directions.Each direction was run at aeration rates of 0.1,0.4,and 0.7 L/min.The findings showed that the compost pile aerated at 0.4 L/min by using two-directional airflow can reach the thermophilic temperature within half of the day.The compost pile achieved temperature of 40.94℃ after 10.5 h.Although the compost experienced slightly high in moisture loss(4.3%),the compost still attained the standard values for maturity.The compost produced from food waste could be applied in soil to improve its fertility.
