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Distribution of Zinc, Copper, and Iron in the Tailings Dam of an Abandoned Mine in Shimokawa, Hokkaido, Japan

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/76821

Title: Distribution of Zinc, Copper, and Iron in the Tailings Dam of an Abandoned Mine in Shimokawa, Hokkaido, Japan
Authors: Khoeurn, Kimleang Browse this author
Sasaki, Asuka Browse this author
Tomiyama, Shingo Browse this author
Igarashi, Toshifumi Browse this author →KAKEN DB
Keywords: Acid mine drainage (AMD)
Tailings
Toxic elements
Principal component analysis (PCA)
Issue Date: Mar-2019
Publisher: Springer
Journal Title: Mine water and the environment
Volume: 38
Issue: 1
Start Page: 119
End Page: 129
Publisher DOI: 10.1007/s10230-018-0566-5
Abstract: This paper addresses the mechanism of acid mine drainage generation in tailings from an abandoned mine site and predicts the evolution of zinc (Zn), copper (Cu), and iron (Fe) concentrations. Batch leaching experiments and sequential extractions were conducted to investigate the leaching behavior of these contaminants from the tailings and to understand their solid-phase partitioning. Acid-base accounting and principal component analysis (PCA) were used to confirm factors affecting Zn, Cu, and Fe leaching and acid formation based on the leaching experiments. There were strong positive correlations between Zn, Fe, or EC and SO42-, indicating that pyrite and sphalerite are the major minerals releasing Zn and Fe. This aligns with the PCA results. In the upper part of the tailings, the water-soluble and sulfide fractions of Zn, Cu, and Fe were almost flushed out, whereas they remained high in the deepertailings. This implies that the tailings will likely continue to release these contaminants (Zn>Cu>Fe) for a long time unless remedial measures are taken.
Rights: The final publication is available at link.springer.com
Type: article (author version)
URI: http://hdl.handle.net/2115/76821
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: KHOEURN Kimleang

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