Аннотация:Composting can be used to break down the complex biomass components which can influence slow pyrolysis products. In this work, the effect of composting on slow pyrolysis products of rice husk and wheat husk at different temperatures is investigated. It was found that in rice husk, composting yielded a 2.63–16.33% increase in char yield. In wheat husk, a 9.41–19.68% increase in char yield was observed. In the case of bio-oil yield, a 1.70–21.67% increase in rice husk and a 1.55–5.14% increase in wheat husk was noticed. However, with regard to gas yield, composting yielded a 47.22–52.24% decrease in rice husk and a 8.86–33.62% decrease in wheat husk.