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Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting
Guo, Hao-Nan1,4; Wang, Li-Xia2; Liu, Hong-Tao1,3
2020-10-06
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume10Issue:1Pages:9
Corresponding AuthorLiu, Hong-Tao(liuht@igsnrr.ac.cn)
AbstractThis study aims to investigate the relationship between key physicochemical parameters related to composting process and bioavailability of Cd, As and Cr during swine manure composting through regulating different initial carbon to nitrogen (C/N) ratios (15:1, 20:1, 25:1) and bulking agent types (straw, green waste). Results showed that higher initial C/N ratio of 20:1 or 25:1 and straw as bulking agent were optimal to reduce the bioavailability of Cd, As and Cr (62.4%, 20.6% and 32.2% reduction, respectively). Redundancy analysis implied that the bioavailability of Cd was significantly associated with total phosphorus and total nitrogen, deducing the formation of phosphate precipitation and biosorption might participated in the reaction process, while that of As and Cr were mainly influenced by organic matter (OM), cation exchange capacity (CEC) and OM, CEC, electric conductivity, respectively. A total of 48.5%, 64.6% and 62.2% of Cd, As and Cr redistribution information could be explained by the above parameters. Further correlation analysis revealed that bioavailable As and Cr were negatively correlated with humic acid to fulvic acid ratio. In summary, this study confirms that the mechanisms of phosphate precipitation, biosorption and humification played critical role in reducing Cd, As and Cr bioavailability during swine manure composting.
DOI10.1038/s41598-020-73894-4
WOS KeywordORGANIC-MATTER TRANSFORMATIONS ; HEAVY-METALS ; PIG MANURE ; SEWAGE-SLUDGE ; BULKING AGENTS ; C/N RATIO ; SPECIATION ; CU ; BIOAVAILABILITY ; MOBILITY
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2018YFD0500205] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA23050103]
Funding OrganizationNational Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000578479400013
PublisherNATURE RESEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/157082
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.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China
3.Chinese Acad Sci, Engn Lab Yellow River Delta Modern Agr, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Coll Resource & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Guo, Hao-Nan,Wang, Li-Xia,Liu, Hong-Tao. Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting[J]. SCIENTIFIC REPORTS,2020,10(1):9.
APA Guo, Hao-Nan,Wang, Li-Xia,&Liu, Hong-Tao.(2020).Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting.SCIENTIFIC REPORTS,10(1),9.
MLA Guo, Hao-Nan,et al."Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting".SCIENTIFIC REPORTS 10.1(2020):9.
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