Immobilization pathways of heavy metals in composting: Interactions of microbial community and functional gene under varying C/N ratios and bulking agents
文献类型：期刊论文
| 作者 | Guo, Hao-nan1,2; Liu, Hong-tao2,3; Wu, Shubiao4 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2022-03-15 |
| 卷号 | 426页码:10 |
| 关键词 | Composting Heavy metal immobilization Microbial community Functional gene Structural equation model |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2021.128103 |
| 通讯作者 | Liu, Hong-tao(liuht@igsnrr.ac.cn) |
| 英文摘要 | Excessive heavy metals (HMs) in livestock manure due to additives over-use limits its recycling through composting. However, few studies have investigated the interactive influence of microbial communities, functional genes, and environmental factors in HM immobilization during composting. Therefore, treatments with different C/N ratios (15:1, 20:1, 25:1) and bulking agents (maize straw, green waste, vinasse) were conducted to explore the HMs immobilization pathways using structural equation model (SEM). Results confirmed the promoting effect of C/N ratio of 20:1 and vinasse on microbial diversity, thus leading to greater HMs immobilization rate. Meanwhile, the dominant microbial phyla of Cu/Zn, Cd, As, and Cr were identified as Proteobacteria, Firmicutes, Chytridiomycota, and Bacteroidota, respectively. Moreover, the significant correlation between functional genes (copC, mt, cbhl, aoxB, yieF) and HMs illustrated potential immobilization effects of metal-binding proteins on Cu and Zn, humus complexation on Zn, and oxidase/reductase on As/Cr. Finally, SEM indicated that the redistribution of Cu, Zn, As, and Cr fractions was interactively influenced by environmental factors (organic matter, pH, electrical conductivity, and total phosphorus), microbial communities, and functional genes, while Cd was directly regulated by organic matter and total phosphorus. These results may provide a deeper understanding of HM immobilization pathways during swine manure composting. |
| WOS关键词 | PIG MANURE ; HUMIC SUBSTANCES ; BIOAVAILABILITY ; SPECIATION ; BACTERIA ; COPPER ; SEDIMENTS ; POLLUTION ; TOXICITY ; CHROMIUM |
| 资助项目 | National Key Research and Development Program of China[2018YFD0500205] ; Kochen Outstanding Young Scholars Program of the Institute of Geographic Sciences and Natural Resources Research, CAS[2017RC102] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000752555900001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; Kochen Outstanding Young Scholars Program of the Institute of Geographic Sciences and Natural Resources Research, CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/170436]  |
| 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.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Engn Lab Yellow River Delta Modern Agr, Beijing 100101, Peoples R China 4.Aarhus Univ, Dept Agroecol, Blichers Alle 20, DK-8830 Tjele, Denmark |
| 推荐引用方式 GB/T 7714 | Guo, Hao-nan,Liu, Hong-tao,Wu, Shubiao. Immobilization pathways of heavy metals in composting: Interactions of microbial community and functional gene under varying C/N ratios and bulking agents[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,426:10. |
| APA | Guo, Hao-nan,Liu, Hong-tao,&Wu, Shubiao.(2022).Immobilization pathways of heavy metals in composting: Interactions of microbial community and functional gene under varying C/N ratios and bulking agents.JOURNAL OF HAZARDOUS MATERIALS,426,10. |
| MLA | Guo, Hao-nan,et al."Immobilization pathways of heavy metals in composting: Interactions of microbial community and functional gene under varying C/N ratios and bulking agents".JOURNAL OF HAZARDOUS MATERIALS 426(2022):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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