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Weir building: A potential cost-effective method for reducing mercury leaching from abandoned mining tailings
Xiaohang Xu;  Chunhao Gu;  Xinbin Feng ;  Guangle Qiu;  Lihai Shang;  Zhidong Xu;  Qinhui Lu;  Dean Xiao;  Heng Wang;  Yan Lin;  Thorjørn Larssen
2018
Source PublicationScience of the Total Environment
Volume651Pages:171-178
Abstract

To mitigate mercury (Hg) pollution and reduce Hg downstream transportation, a weir was designed by a river system that had been inflicted by leachate from the slagheap of the Yanwuping Hg mine in Wanshan Hgmining area. A whole yearmonitoring of Hg species was conducted, and the efficiency of Hg reduction by the weir application was evaluated. The Hg concentrations in the river waterwere significantly higher in the wet season than in the dry season. Waterflow was confirmed to be the main driving factor for Hg mobilization and transportation, and an episode study revealed that most Hg was released in times of storms. Increased monitoring and preventive maintenance measures need to be taken on barriers in advance of storms. A large proportion of the total Hg (THg) and methylmercury (MeHg) is associated to particles. During the study period, approximately 412 g THg and 4.04 g total MeHg (TMeHg) were released from the YMM slagheap, of which 167 g THg and 1.15 g TMeHg were retained by the weir. Annually, 40.4% THg and 38.4% TMeHg was retained by the weir. Weir construction is considered as a potential cost-effective measure tomitigate Hg in riverwater and should be promoted and extended in the future after optimization. 

KeywordStream Water Mercury Speciation weir construction Mercury Retention cost Benefit Analysis
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8913
Collection环境地球化学国家重点实验室
Affiliation1.Weir building: A potential cost-effective method for reducing mercury leaching from abandoned mining tailings
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Guizhou Institute of Technology, Guiyang 550003, China
4.Guizhou University of Finance and Economics, Guiyang 550025, China
5.College of Resources and Environment, Yangtze University, Wuhan 430100, China
6.Norwegian Institute for Water Research, Gaustadalleen 21, 0349 Oslo, Norway
Recommended Citation
GB/T 7714
Xiaohang Xu;Chunhao Gu;Xinbin Feng ;Guangle Qiu;Lihai Shang;Zhidong Xu;Qinhui Lu;Dean Xiao;Heng Wang;Yan Lin;Thorjørn Larssen. Weir building: A potential cost-effective method for reducing mercury leaching from abandoned mining tailings[J]. Science of the Total Environment,2018,651:171-178.
APA Xiaohang Xu;Chunhao Gu;Xinbin Feng ;Guangle Qiu;Lihai Shang;Zhidong Xu;Qinhui Lu;Dean Xiao;Heng Wang;Yan Lin;Thorjørn Larssen.(2018).Weir building: A potential cost-effective method for reducing mercury leaching from abandoned mining tailings.Science of the Total Environment,651,171-178.
MLA Xiaohang Xu;Chunhao Gu;Xinbin Feng ;Guangle Qiu;Lihai Shang;Zhidong Xu;Qinhui Lu;Dean Xiao;Heng Wang;Yan Lin;Thorjørn Larssen."Weir building: A potential cost-effective method for reducing mercury leaching from abandoned mining tailings".Science of the Total Environment 651(2018):171-178.
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