Cr(VI)-contaminated groundwater remediation with simulated permeable reactive barrier (PRB) filled with natural pyrite as reactive material: Environmental factors and effectiveness | |
Liu, Yuanyuan1; Mou, Haiyan1; Chen, Liqun2,3; Mirza, Zakaria A.4; Liu, Li2 | |
刊名 | JOURNAL OF HAZARDOUS MATERIALS
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2015-11-15 | |
卷号 | 298页码:83-90 |
关键词 | Cr(Vi)/hexavalent Chromium Prbs Natural Pyrite Environmental Factors Groundwater |
ISSN号 | 0304-3894 |
DOI | 10.1016/j.jhazmat.2015.05.007 |
英文摘要 | Permeable reactive barriers (PRBs) are efficient technologies for in situ remediation of contaminated groundwater, the effectiveness of which greatly depends on the reactive media filled. Natural pyrite is an iron sulfide material with a very low content of iron and sulfur, and a mining waste which is a potential material for Cr(VI) immobilization. In this study, we conducted a series of batch tests to research the effects of typical environmental factors on Cr(VI) removal and also simulated PRB filled with natural pyrite to investigate its effectiveness, in order to find a both environmentally and economically fine method for groundwater remediation. Batch tests showed that pH had the significant impact on Cr(VI) removal with an apparently higher efficiency under acidic conditions, and dissolved oxygen (DO) would inhibit Cr(VI) reduction; a relatively high initial Cr(VI) concentration would decrease the rate of Cr(VI) sorption; ionic strength and natural organic matter resulted in no significant effects on Cr(VI) removal. Column tests demonstrated that the simulated PRB with natural pyrite as the reactive media was considerably effective for removing Cr(VI) from groundwater, with a sorption capability of 0.6222 mg Cr per gram of natural pyrite at an initial Cr(VI) concentration of 10 mg/L at pH 5.5 in an anoxic environment. (C) 2015 Elsevier B.V. All rights reserved. |
资助项目 | Fundamental Research Funds for the Central Universities[106112014CDJZR210003] ; Chongqing Natural Science Foundation[cstc2014jcyjA20016] |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000360595800009 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.138/handle/2HOD01W0/1876] ![]() |
专题 | 中国科学院重庆绿色智能技术研究院 |
作者单位 | 1.Chongqing Univ, Minist Educ, Key Lab Gorges Reservoir Reg Ecoenvironm 3, Chongqing 400044, Peoples R China 2.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 3.BERIS Engn & Res Cooperat, Baotou 014010, Inner Mongolia, Peoples R China 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Yuanyuan,Mou, Haiyan,Chen, Liqun,et al. Cr(VI)-contaminated groundwater remediation with simulated permeable reactive barrier (PRB) filled with natural pyrite as reactive material: Environmental factors and effectiveness[J]. JOURNAL OF HAZARDOUS MATERIALS,2015,298:83-90. |
APA | Liu, Yuanyuan,Mou, Haiyan,Chen, Liqun,Mirza, Zakaria A.,&Liu, Li.(2015).Cr(VI)-contaminated groundwater remediation with simulated permeable reactive barrier (PRB) filled with natural pyrite as reactive material: Environmental factors and effectiveness.JOURNAL OF HAZARDOUS MATERIALS,298,83-90. |
MLA | Liu, Yuanyuan,et al."Cr(VI)-contaminated groundwater remediation with simulated permeable reactive barrier (PRB) filled with natural pyrite as reactive material: Environmental factors and effectiveness".JOURNAL OF HAZARDOUS MATERIALS 298(2015):83-90. |
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