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Evaluation of Dispersion of Lead-Bearing Mine Wastes in Kabwe District, Zambia

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Title: Evaluation of Dispersion of Lead-Bearing Mine Wastes in Kabwe District, Zambia
Authors: Nakamura, Shinsaku Browse this author
Igarashi, Toshifumi Browse this author →KAKEN DB
Uchida, Yoshitaka Browse this author →KAKEN DB
Ito, Mayumi Browse this author →KAKEN DB
Hirose, Kazuyo Browse this author
Sato, Tsutomu Browse this author →KAKEN DB
Mufalo, Walubita Browse this author
Chirwa, Meki Browse this author
Nyambe, Imasiku Browse this author
Nakata, Hokuto Browse this author →KAKEN DB
Nakayama, Shouta Browse this author →KAKEN DB
Ishizuka, Mayumi Browse this author →KAKEN DB
Keywords: mine wastes
weather conditions
Issue Date: Aug-2021
Publisher: MDPI
Journal Title: Minerals
Volume: 11
Issue: 8
Start Page: 901
Publisher DOI: 10.3390/min11080901
Abstract: Dispersion of lead (Pb) in mine wastes was simulated for reproducing Pb contamination of soil in Kabwe District, Zambia. Local weather data of year 2019 were monitored in situ and used for the simulations. The plume model, weak puff model, and no puff model were adopted for calculation of Pb dispersion under different wind conditions. The results showed that Pb dispersion from the Kabwe mine was directly affected by wind directions and speeds in the dry season, although it was not appreciably affected in the rainy season. This may be because the source strength is lower in the rainy season due to higher water content of the surface. This indicates that Pb dispersion patterns depend on the season. In addition, the distribution of the amount of deposited Pb-bearing soils around the mine corresponded to the distribution of Pb contents in soils. These results suggest that Pb contamination in soils primarily results from dispersion of fine mine wastes.
Type: article
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)

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