Variation and factors on heavy metal speciation during co-composting of rural sewage sludge and typical rural organic solid waste
文献类型：期刊论文
| 作者 | Xu, Su ; Li, Lin; Zhan, Jun; Guo, Xuesong
|
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2022-03-15 |
| 卷号 | 306期号:0页码:114418 |
| 关键词 | SEQUENTIAL EXTRACTION PROCEDURE COPPER MANURE LEAD BIOAVAILABILITY FRACTIONATION AVAILABILITY SEDIMENTS MOBILITY IMPACT |
| ISSN号 | 0301-4797 |
| 英文摘要 | In this study, a co-composting of rural organic solid waste (rural sewage sludge, kitchen waste and corn stalks) was conducted to analyze the variation of heavy metals (As, Cu, Cr, Ni, Pb, Hg, and Zn) and their major influencing factors. During composting, significant changes were observed in the total contents of heavy metals (p < 0.01): the total concentrations of As, Cu, Hg, Pb and Zn increased by 7.5%, 54.1%, 26.3%, 15.8%, and 34.2%, whereas that of Cr and Ni decreased by 71.3% and 33.4%, respectively. Heavy metals were mainly bound to the oxidizable and residual fractions. Spearman and Redundancy analysis (RDA) indicated that substances were significantly correlated with the changes in speciation of heavy metals, among all the factors, while pH and temperature were the dominating environmental influencing parameters. Several metal-resistant bacterial genera (Pseudomonas, Paenibacillus, Bacillus, Acinetobacter, Desulfovibrio, and Ochrobactrum, etc) were observed, with significant explanatory capacity for the changes in heavy metals. Composting showed a poor effect on heavy metal passivation, except for that of As. After composting, the heavy metal contents were consistent with the application standards. The evaluation of potential ecological risk showed a high cumulative ecological risk (336.9) of heavy metals. This study provides technical support and practical information for the disposal and safe recycling for rural organic solid waste. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47745]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | Guo, Xuesong |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Su,Li, Lin,Zhan, Jun,et al. Variation and factors on heavy metal speciation during co-composting of rural sewage sludge and typical rural organic solid waste[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2022,306(0):114418. |
| APA | Xu, Su,Li, Lin,Zhan, Jun,&Guo, Xuesong.(2022).Variation and factors on heavy metal speciation during co-composting of rural sewage sludge and typical rural organic solid waste.JOURNAL OF ENVIRONMENTAL MANAGEMENT,306(0),114418. |
| MLA | Xu, Su,et al."Variation and factors on heavy metal speciation during co-composting of rural sewage sludge and typical rural organic solid waste".JOURNAL OF ENVIRONMENTAL MANAGEMENT 306.0(2022):114418. |
入库方式： OAI收割
来源：生态环境研究中心
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