矿区河流沉积物中砷和镉浸提及浸提液的处理
文献类型：期刊论文
| 作者 | 王婧; 孙瑞川; 盛彦清 ; 赵国强; 杨剑
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| 刊名 | 环境科学与技术
 |
| 出版日期 | 2018-11-15 |
| 卷号 | 41期号:11页码:72-80 |
| ISSN号 | 1003-6504 |
| 关键词 | 沉积物 重金属 界河 化学浸提 化学沉淀法 |
| DOI | 10.19672/j.cnki.1003-6504.2018.11.011 |
| 其他题名 | Extraction of As and Cd in Sediments of Mining Area and the Treatment of Extraction Solution |
| 产权排序 | (1)中国科学院烟台海岸带研究所山东省海岸带环境工程技术研究中心 ; (2)中国科学院大学 ; (3)烟台市环保工程咨询设计院 |
| 英文摘要 | High concentrations of As and Cd in sediment are usually related to gold mining. Exploratory studies were done to investigate As and Cd extraction in sediments as well as the removal of As and Cd from the leachate based on the mining area river (Jiehe River) sediments. Both of the heavy metals were extracted using single reagent extraction and sequential chemical extraction and then removed through neutralization and sulfide precipitation. The results show that the single reagent extraction of 0.1 mol/L oxalic acid (OX) and the sequential chemical extraction of 0.01 mol/L EDTA combined 0.1 mol/L Na_2S_2O_3 have the best extraction efficiency for As and Cd (approximately 100%), respectively. Two kinds of solutions that have high si- multaneous extraction efficiency with As and Cd are chosen to study the removal efficiency. The results indicate that there is a high removal efficiency for As in the HCl extraction solution using the neutralization precipitation method (pH>6), whereas As removal efficiency in the EDTA-OX extraction is significant through the sulfide precipitation method (reaction time, 15 min). Additionally, Cd in both of the above extraction solutions can be effectively removed using the neutralization precipitation combined the sulfide precipitation (Na_2S=0.05 mol/L, pH=7). |
| 资助项目 | National Natural Science Foundation of China[41373100] ; Science and Technology Program for Public Wellbeing of Shandong Province[2013kjhm060308] ; Program of Advanced Talents of The Guizhou University of Finance and Economics, 2016 |
| 语种 | 中文 |
| CSCD记录号 | CSCD:6387688 |
| 资助机构 | 国家自然基金#41373100 ; 山东省科技惠民计划#2013kjhm060308 ; 中科院关键技术人才项目# |
| 源URL | [http://ir.yic.ac.cn/handle/133337/24319]  |
| 专题 | 烟台海岸带研究所_山东省海岸带环境工程技术研究中心 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.烟台市环保工程咨询设计院 2.中国科学院烟台海岸带研究所山东省海岸带环境工程技术研究中心; 3.中国科学院大学; |
| 推荐引用方式 GB/T 7714 | 王婧,孙瑞川,盛彦清,等. 矿区河流沉积物中砷和镉浸提及浸提液的处理[J]. 环境科学与技术,2018,41(11):72-80. |
| APA | 王婧,孙瑞川,盛彦清,赵国强,&杨剑.(2018).矿区河流沉积物中砷和镉浸提及浸提液的处理.环境科学与技术,41(11),72-80. |
| MLA | 王婧,et al."矿区河流沉积物中砷和镉浸提及浸提液的处理".环境科学与技术 41.11(2018):72-80. |
入库方式： OAI收割
来源：烟台海岸带研究所
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