Abstract：
Aerobic kitchen waste composting can contribute to greenhouse gas (GHGs) emissions and global warming. This study investigated the effects of biochar and zeolite on GHGs emissions during composting. The findings demonstrated that biochar could reduce N2O and CH4 cumulative releases by 47.7 %and 47.9 %, respectively, and zeolite could reduce the cumulative release of CO2 by 28.4 %. Meanwhile, the biochar and zeolite addition could reduce the abundance of potential core microorganisms associated with GHGs emissions. In addition, biochar and zeolite reduced N2O emissions by regulating the abundance of nitrogen conversion functional genes. Biochar and zeolite were shown to reduce the impact of bacterial communities on GHGs emissions. In summary, this study revealed that biochar and zeolite can effectively reduce GHG emissions during composting by altering the compost microenvironment and regulating microbial community structure. Such findings are valuable for facilitating high-quality resource recovery of organic solid waste.
摘要：
好氧厨房垃圾堆肥可导致温室气体（GHGs）排放和全球变暖。本研究考察了生物炭和沸石对堆肥过程中温室气体排放的影响。结果表明，生物炭可以减少N2O和CH4的累积释放47.7％和47.9％，分别,沸石可以减少28.4%的CO2累积释放。同时,生物炭和沸石的添加可以降低与温室气体排放相关的潜在核心微生物的丰度。此外,生物炭和沸石通过调节氮转化功能基因的丰度来减少N2O的排放。生物炭和沸石被证明可以减少细菌群落对温室气体排放的影响。总之,该研究表明，生物炭和沸石可以通过改变堆肥微环境和调节微生物群落结构来有效减少堆肥过程中的温室气体排放。这些发现对于促进有机固体废物的高质量资源回收具有重要意义。
