PMID- 31160030 OWN - NLM STAT- MEDLINE DCOM- 20190912 LR - 20190912 IS - 1879-2456 (Electronic) IS - 0956-053X (Linking) VI - 92 DP - 2019 Jun 1 TI - Hyperthermophilic pretreatment composting significantly accelerates humic substances formation by regulating precursors production and microbial communities. PG - 89-96 LID - S0956-053X(19)30321-6 [pii] LID - 10.1016/j.wasman.2019.05.021 [doi] AB - Hyperthermophilic pretreatment composting (HPC) is superior to traditional composting (TC) with enhanced compost maturity and accelerated humic substances (HS) formation. However, the regulators affecting HS formation, which is of great importance in evaluating the compost maturity, are still unclear. This study aimed to examine and compare the effects of HPC and TC on (i) HS formations under varying precursors, (ii) bacterial and fungal dynamics, and (iii) factors affecting HS formations. Results revealed that HS formation was accelerated in the heating, thermophilic and maturity phases for HPC, whereas the synthesis of HS was observed in the maturity phase for TC. Particularly, concentrations of humic acid, polyphenols, amino acids, polysaccharides and reducing sugar were increased in compost by 50, 60, 52, 44 and 92%, respectively after the hyperthermophilic pretreatment. These increased precursors could stimulate the activity of Planococcaceae that possessed a high degradation capacity on D-mannitol in the heating stage. Additionally, the thermophilic microbes Solibacillus and Aspergillus with high degradation capacity on lignocelluloses and lignin, respectively dominated in the thermophilic stage. These microorganisms may promote the formation of precursors and thus accelerated synthesis of HS in HPC. Finally, structural equation model (SEM) showed polyphenol and reducing sugar were the key precursors to directly or indirectly promote HS formation in HPC and the higher temperature rise as well as the higher N content provided advantages over TC in improving HS formation. This study provides the stability to the accelerated humification process in HPC and reveals its potential applicability in improving HS formation. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Huang, Ying AU - Huang Y AD - Laboratory for Agricultural Wastes Treatment and Recycling, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Xuanwu District, Nanjing, Jiangsu Province 210014, China; Key Laboratory of Crop and Livestock Integrated Farming, Ministry of Agriculture, Nanjing, Jiangsu Province 210014, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, Jiangsu Province 210014, China. FAU - L, Danyang AU - L D AD - Laboratory for Agricultural Wastes Treatment and Recycling, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Xuanwu District, Nanjing, Jiangsu Province 210014, China; Key Laboratory of Crop and Livestock Integrated Farming, Ministry of Agriculture, Nanjing, Jiangsu Province 210014, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, Jiangsu Province 210014, China. FAU - Shah, Ghulam Mustafa AU - Shah GM AD - Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan. FAU - Chen, Wei AU - Chen W AD - The Agricultural Bureau of Jiangning District, Wanan West Road, Jiangning District, Nanjing, Jiangsu Province 211100, China. FAU - Wang, Wei AU - Wang W AD - The Agricultural Bureau of Jiangning District, Wanan West Road, Jiangning District, Nanjing, Jiangsu Province 211100, China. FAU - Xu, Yueding AU - Xu Y AD - Laboratory for Agricultural Wastes Treatment and Recycling, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Xuanwu District, Nanjing, Jiangsu Province 210014, China; Key Laboratory of Crop and Livestock Integrated Farming, Ministry of Agriculture, Nanjing, Jiangsu Province 210014, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, Jiangsu Province 210014, China. FAU - Huang, Hongying AU - Huang H AD - Laboratory for Agricultural Wastes Treatment and Recycling, Circular Agriculture Research Center, Jiangsu Academy of Agricultural Sciences, No. 50 Zhongling Street, Xuanwu District, Nanjing, Jiangsu Province 210014, China; Key Laboratory of Crop and Livestock Integrated Farming, Ministry of Agriculture, Nanjing, Jiangsu Province 210014, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, Jiangsu Province 210014, China. Electronic address: hhymicrolab@163.com. LA - eng PT - Journal Article DEP - 20190516 PL - United States TA - Waste Manag JT - Waste management (New York, N.Y.) JID - 9884362 RN - 0 (Humic Substances) RN - 0 (Soil) SB - IM MH - Archaea MH - Bacteria MH - *Composting MH - Humic Substances MH - *Microbiota MH - Soil OTO - NOTNLM OT - Humic substances formation OT - Hyperthermophilic pretreatment composting OT - Microbial communities OT - Physicochemical properties OT - Precursors EDAT- 2019/06/05 06:00 MHDA- 2019/09/13 06:00 CRDT- 2019/06/05 06:00 PHST- 2019/03/12 00:00 [received] PHST- 2019/04/29 00:00 [revised] PHST- 2019/05/12 00:00 [accepted] PHST- 2019/06/05 06:00 [entrez] PHST- 2019/06/05 06:00 [pubmed] PHST- 2019/09/13 06:00 [medline] AID - S0956-053X(19)30321-6 [pii] AID - 10.1016/j.wasman.2019.05.021 [doi] PST - ppublish SO - Waste Manag. 2019 Jun 1;92:89-96. doi: 10.1016/j.wasman.2019.05.021. Epub 2019 May 16.