Spectroscopic evidence for hyperthermophilic pretreatment intensifying humification during pig manure and rice straw composting
文献类型： 外文期刊
作者： Cao, Yun 1 ; Wang, Jidong 3 ; Huang, Hongying 1 ; Sun, Enhui 1 ; Butterly, Clayton 4 ; Xu, Yueding 1 ; He, Huan 5 ; Zhang 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Recycling Agr Res Ctr, Nanjing 210014, Jiangsu, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Crop & Anim Integrated Farming, Nanjing 210014, Jiangsu, Peoples R China
3.Inst Agr Resources & Environm, Nanjing 210014, Jiangsu, Peoples R China
4.Univ Melbourne, Fac Vet & Agr Sci, Melbourne, Vic 3010, Australia
5.Nanjing Normal Univ, Sch Environm, Nanjing 210023, Jiangsu, Peoples R China
关键词： Humification process; FT-IR; C-13 NMR; Organic waste; Precursors
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）
ISSN： 0960-8524
年卷期： 2019 年 294 卷
页码：
收录情况： SCI
摘要： Hyperthermophilic pretreatment composting (HPC) is superior to traditional composting (CK) with shortened maturity period and enhanced humification degree. However, the chemical and structural evolution of humic substances (HS) at the molecular level is not known. In this study, the impact of hyperthermophilic pretreatment (90 degrees C, 4 h) on the content and chemical composition of HS during composting were investigated. The HS content of the final compost was 87.8 g/kg and 76.7 g/kg in HPC and CK, respectively. Significantly higher humic acid/fulvic acid ratio (1.27 in HPC v.s. 0.77 in CK) was observed in HPC. C-13 NMR spectroscopic data showed a higher aromatics percentage and earlier enrichment of aromatic structures in HS extracted from HPC than CK. Intensified humification of HPC was related to the increased levels of HS precursors and degradation of lignocellulose. Redundancy analysis demonstrated that aromatic C, phenolic C and O-alkyl C can be used for evaluation of the humification degree.
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