Effects of additives on nitrogen transformation and greenhouse gases emission of co-composting for deer manure and corn straw.

Compost can realize the recycling of organic waste. However, it also emits NH and greenhouse gases (GHGs) to the environment, which leads to nitrogen loss and global warming. Adding additives to compost can alleviate the emission of NH and GHGs. The mechanism of nitrogen transformation and GHGs emission was studied with deer manure and corn straw as compost substrate, and biochar and zeolite as additives. The results showed that the addition of zeolite in compost is good for prolonging high-temperature composting time. The addition of zeolite reduced the transformation of NH-N and the NO emission. The addition of zeolite is beneficial to reduce nitrogen loss during composting. CH emission is an important factor affecting the global warming potential of composting, and it is necessary to improve ventilation conditions in order to alleviate anaerobic. This study is of great significance to reduce nitrogen loss and improve composting effect.