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Evaluation of Dispersion of Lead-Bearing Mine Wastes in Kabwe District, Zambia
| 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 | | contamination | | lead | | dispersion | | weather conditions | | wind | | Kabwe | | Zambia |
| 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 |
| URI: | http://hdl.handle.net/2115/82785 |
| 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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