堆肥
环境化学
有机质
环境科学
腐殖质
微生物
制浆造纸工业
微生物种群生物学
生物量(生态学)
作者
Xuanqing Wang,Mengmeng Wang,Juan Zhang,Zhijian Kong,Xiaosong Wang,Dongyang Liu,Qirong Shen
标识
DOI:10.1016/j.biortech.2020.124599
摘要
Multiple types of biochemical parameters were determined in the course of the composting process with rice straw and Chinese traditional medicine residues as substrates. The water-soluble fractions (WSFs) were analyzed by excitation-emission-matrix fluorescence (EEM-FL), and the maximum PV/III value (1.2) was observed in thermophilic phase (THP). Bacterial community analysis results indicated that the genera with the capacity of degrading lignocellulose dominated in mesophilic phase (MEP) and THP. The metabolic pathways based on KEGG analysis revealed that the amino acid, carbohydrate and energy metabolism pathways in THP were higher than the other two phases. The correlation analysis between EEM-FL and the bacterial community revealed that the genera with high abundances in the THP were significantly positively correlated with fulvic acid-like materials and humic acid-like organics. The quantification results of the lignocellulose-degrading genes in different phases further verified the key functional bacteria obtained by correlation analysis during the composting process.
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