Impact of biochar addition on three-dimensional structural changes in aggregates associated with humus during swine manure composting

doi:10.1016/j.jclepro.2020.124380

	Impact of biochar addition on three-dimensional structural changes in aggregates associated with humus during swine manure composting
	Guo, Xiao-xia 2,3; Wu, Shu-biao 4; Wang, Xi-qing 1; Liu, Hong-tao 2,5
刊名	JOURNAL OF CLEANER PRODUCTION
	2021-01-20
卷号	280 页码:10
关键词	Composting Biochar Aggregate structure Humus SR-mu CT
ISSN号	0959-6526
DOI	10.1016/j.jclepro.2020.124380
通讯作者	Liu, Hong-tao(liuht@igsnrr.ac.cn)
英文摘要	Aerobic composting is widely used to recycle agricultural organic waste. From a micro perspective, the dynamic changes in the internal structure of compost aggregates during composting can reflect aeration conditions, which is worthy of further study to improve composting efficiency. This study set three composting treatments (swine manure: rice straw = 4:1 and 8:1, swine manure: rice straw: biochar = 8:1:1, wet mass ratio), to detect 3-D microstructures of compost aggregate with the involvement of humus and biochar during composting. The results showed that biochar addition to compost enhanced humic acid formation and humification degree, and it greatly decreased bulk density by 45.89% and increased free air space by 31.25% compared with the initial stage of the compost. Compost materials tended to become looser during composting, and biochar aided an increase in total porosity of compost aggregates by approximately 90% compared with other treatments, mainly attributed to decomposition effects. It is assumed that large aggregates break up with the assistance of biochar, and these small parts of the materials gradually stick together with the formation of humus colloids to develop final dense particles. Therefore, it can be concluded that when biochar is used as an additive, it can improve the physical structure with the involvement of humus during composting. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	National Key R&D Program of China[2016YFD0501401] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA23050103] ; Ko-chen Outstanding Young Scholars Program of the Institute of Geographic Sciences and Natural Resources Research, CAS[2017RC102]
WOS关键词	ORGANIC-MATTER DEGRADATION ; GREENHOUSE-GAS EMISSIONS ; HUMIC SUBSTANCES ; SOIL PROPERTIES ; POULTRY MANURE ; SEWAGE-SLUDGE ; PIG MANURE ; WASTE ; KINETICS ; ZEOLITE
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000608740400004
资助机构	National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Ko-chen Outstanding Young Scholars Program of the Institute of Geographic Sciences and Natural Resources Research, CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136406]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Hong-tao
作者单位	1.China Agr Univ, Coll Engn, Dept Agr Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Aarhus Univ, Dept Agroecol, Blichers Alle 20, DK-8830 Tjele, Denmark 5.Chinese Acad Sci, Engn Lab Yellow River Delta Modern Agr, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Guo, Xiao-xia,Wu, Shu-biao,Wang, Xi-qing,et al. Impact of biochar addition on three-dimensional structural changes in aggregates associated with humus during swine manure composting[J]. JOURNAL OF CLEANER PRODUCTION,2021,280:10.
APA	Guo, Xiao-xia,Wu, Shu-biao,Wang, Xi-qing,&Liu, Hong-tao.(2021).Impact of biochar addition on three-dimensional structural changes in aggregates associated with humus during swine manure composting.JOURNAL OF CLEANER PRODUCTION,280,10.
MLA	Guo, Xiao-xia,et al."Impact of biochar addition on three-dimensional structural changes in aggregates associated with humus during swine manure composting".JOURNAL OF CLEANER PRODUCTION 280(2021):10.