Novel pilot-scale washing process and equipment for removing Cr(VI) from contaminated soil
文献类型：期刊论文
| 作者 | Lin, Xiao1,2,3; Gao, Ming1,2,3; Cao, Hongbin1,2,3 |
| 刊名 | JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
 |
| 出版日期 | 2013-10-01 |
| 卷号 | 15期号:4页码:476-481 |
| 关键词 | Soil washing Chromium removal Pilot scale Citric acid |
| 英文摘要 | In this study, a novel horizontal rotating soil washing process and equipment were developed and tested for pilot-scale remediation of soils from a site polluted by chromium ore process residue. Operating parameters, including cylinder rotational velocity, cylinder tilt angle, heating temperature and liquid/soil ratio, were investigated. The Taguchi method was used for the experiment design, and the standard L16 orthogonal array with four parameters and four levels was selected for optimising the operating parameters. Optimal removal efficiency was achieved at cylinder rotational velocity of 2.5 rpm, cylinder tilt angle of 2.6A degrees, heating temperature of 200 A degrees C and liquid/soil ratio of 8. The efficiency of citric acid as an extractant in the novel process was compared with that of water. The analysis of the residual Cr(VI) concentration of the soil shows that citric acid could efficiently remove 22.89 % more Cr(VI) than water in one-stage washing. The residual Cr(VI) concentration in the soil after the three-stage washing is as low as 26.16 mg/kg, which meets the screening levels for soil environmental risk assessment of sites in Beijing City (30 mg/kg). Further study is currently underway to optimise the novel process and equipment for commercial-scale use. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | HEAVY-METALS ; REMEDIATION ; TECHNOLOGIES ; EXTRACTION ; ACIDS ; KILN ; EDTA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000325144600008 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13705]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Xiao,Gao, Ming,Cao, Hongbin. Novel pilot-scale washing process and equipment for removing Cr(VI) from contaminated soil[J]. JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT,2013,15(4):476-481. |
| APA | Lin, Xiao,Gao, Ming,&Cao, Hongbin.(2013).Novel pilot-scale washing process and equipment for removing Cr(VI) from contaminated soil.JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT,15(4),476-481. |
| MLA | Lin, Xiao,et al."Novel pilot-scale washing process and equipment for removing Cr(VI) from contaminated soil".JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT 15.4(2013):476-481. |
入库方式： OAI收割
来源：过程工程研究所
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