Assessment and Reclamation of Soils From Uranium Mining Areas: Case Studies From Portugal

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abstract

The exploration of uranium and radium began in Portugal in 1909 and lasted until 2001, when the uranium mines closed. Wastes from mining, ore milling and processing contain radioactive elements, which can be spread to soils, surface and groundwaters around the mining areas. The concentration of radionuclides can locally attain levels toxic to biota. Radionuclides in soils can be immobilized by complexation with organic matter or by formation of solid phases. However, radionuclides can be in the exchangeable complex or in the soil solution, allowing their uptake by plants and/or their spread into the adjacent soils and/or waters. Owing to the radioactivity of their wastes, the abandoned uranium mines are considered dangerous and are subject to remediation to ensure they are handed back in acceptable environmental and public health condition. Soil rehabilitation is essential, and correct methodologies must evaluate the soil characteristics and consider the physicochemical properties of the potential hazardous elements.

authors

M. M. Abreu, M. C. F. Magalhães

our authors

foto Maria Clara Ferreira Magalhães

Maria Clara Ferreira Magalhães

Emeritus Professor

Groups

G1 - Porous Materials and Nanosystems

Other

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Publication Details

type
Book Chapter
year
2017
Book Title
Assessment, Restoration and Reclamation of Mining Influenced Soils
editors
Jaume Bech, Claudio Bini and Mariya A. Pashkevich
isbn
978-0-12-809588-1
book digital object identifier
10.1016/B978-0-12-809588-1.00007-4
link
https://www.sciencedirect.com/science/article/pii/B9780128095881000074

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