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Impact of biochar addition on three-dimensional structural changes in aggregates associated with humus during swine manure composting
Guo, Xiao-xia1,2; Wu, Shu-biao3; Wang, Xi-qing4; Liu, Hong-tao1,5
2021-01-20
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume280Pages:10
Corresponding AuthorLiu, Hong-tao(liuht@igsnrr.ac.cn)
AbstractAerobic 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.
KeywordComposting Biochar Aggregate structure Humus SR-mu CT
DOI10.1016/j.jclepro.2020.124380
WOS KeywordORGANIC-MATTER DEGRADATION ; GREENHOUSE-GAS EMISSIONS ; HUMIC SUBSTANCES ; SOIL PROPERTIES ; POULTRY MANURE ; SEWAGE-SLUDGE ; PIG MANURE ; WASTE ; KINETICS ; ZEOLITE
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS IDWOS:000608740400004
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/136407
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Hong-tao
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Aarhus Univ, Dept Agroecol, Blichers Alle 20, DK-8830 Tjele, Denmark
4.China Agr Univ, Coll Engn, Dept Agr Engn, Beijing 100083, Peoples R China
5.Chinese Acad Sci, Engn Lab Yellow River Delta Modern Agr, Beijing 100101, Peoples R China
Recommended Citation
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.
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