School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China.
School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China.
Bioresour Technol. 2019 Aug;286:121397. doi: 10.1016/j.biortech.2019.121397. Epub 2019 Apr 30.
Effect mechanisms of organic matter (OM) degradation and methane (CH) emission during sewage sludge (SS) composting with added vesuvianite (V) were studied by high-throughput sequencing (HTS) and phylogenetic investigation of communities by reconstruction of unobserved states (PICRUSt). Results show that the addition of V accelerated the OM degradation and decreased the cumulative CH emissions by 33.6% relative to the control. In addition, V significantly decreased the mcrA gene abundance and the methanogen community richness at the genus level. PICRUSt also indicated that V strengthens the microbial metabolic function and enzymatic activity related to OM degradation, and reduced the enzymatic activity related to CH production. Methanogens community variation analysis proved the ratio of carbon and nitrogen and moisture content are the significant variables affecting CH emissions. Thus, optimizing the ratio of carbon and nitrogen and moisture content will decrease CH emission during SS composting.
采用高通量测序（HTS）和未观察到的状态重建的群落系统发育分析（PICRUSt）研究了添加榍石（V）对污水污泥（SS）堆肥中有机物（OM）降解和甲烷（CH）排放的作用机制。结果表明，与对照相比，V 的添加加速了 OM 的降解，使累积 CH 排放量减少了 33.6%。此外，V 显著降低了 mcrA 基因丰度和产甲烷菌属水平的群落丰富度。PICRUSt 还表明，V 增强了与 OM 降解相关的微生物代谢功能和酶活性，降低了与 CH 生成相关的酶活性。产甲烷菌群落变化分析证明，碳氮比和水分含量是影响 CH 排放的显著变量。因此，优化碳氮比和水分含量将降低 SS 堆肥过程中的 CH 排放。
