ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 23    No. 1    January 2013

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Environmental availability and ecological risk assessment of heavy metals in zinc leaching residue
Xiao-bo MIN1,2, Xian-de XIE1, Li-yuan CHAI1,2, Yan-jie LIANG1, Mi LI1, Yong KE1  
(1. Institute of Environmental Science and Engineering, School of Metallurgical Science and Engineering,
Central South University, Changsha 410083, China;
2. Chinese National Engineering Rese
)
Abstract: Four different methods, namely mineralogical analysis, three-stage BCR sequential extraction procedure, dynamic leaching test and Hakanson Potential Ecological Risk Index Method were used to access the environmental activity and potential ecological risks of heavy metals in zinc leaching residue. The results demonstrate that the environmental activity of heavy metals declines in the following order: Cd>Zn>Cu>As>Pb. Potential ecological risk indices for single heavy metal are Cd>Zn>Cu>As>Pb. Cd has serious potential ecological risk to the ecological environment and contributes most to the potential toxicity response indices for various heavy metals in the residue.
Key words: heavy metals; BCR sequential extraction; environmental availability; leaching toxicity; dynamic leaching; potential ecological risk index method; zinc leaching residue
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU) 湘ICP备09001153号-9