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You are here: Home » Latest Issue » Volume 16, 2021 - Number 1 » COMPARISON OF SOIL CONTAMINATION AT THE SELECTED EUROPEAN COPPER MINES, Carpathian Journal of Earth and Environmental Sciences, February 2021, Vol. 16, No. 1, p. 163 – 174; Doi:10.26471/cjees/2021/016/164


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Peter ANDRÁŠ1, Pavol MIDULA1, João X. MATOS3, Giuseppe BUCCHERI2, Marek DRÍMAL1, Vojtech DIRNER1, Zuzana MELICHOVÁ1 & Ingrid TURISOVÁ1
1Matej Bel University, Faculty of Natural Sciences, Banská Bystrica, Tajovského 40, Banská Bystrica, Slovakia; peter.andras@umb.sk; marek.drimal@umb.sk; pavol.midula@umb.sk; vojtech.dirner@umb.sk
2INAIL – Italian Workers Compensation Authority, UOT Napoli, Via Nuova Poggioreale - 80143 Napoli, Italy; g.buccheri@inail.it
3Laboratório Nacional de Energia e Geologia (Portuguese Geological Survey), Ap. 14 7601-909 Aljustrel, Portugal, joao.matos@ineg.pt


COMPARISON OF SOIL CONTAMINATION AT THE SELECTED EUROPEAN COPPER MINES, Carpathian Journal of Earth and Environmental Sciences, February 2021, Vol. 16, No. 1, p. 163 – 174; Doi:10.26471/cjees/2021/016/164

Full text

Abstract:

This article reports the results of a study concerning contamination of the dump-fields by potentially toxic elements at five abandoned copper mines: ─Żubietová, Špania Dolina (Slovakia), Libiola, Caporciano (Italy) and São Domingos (Portugal). This paper offers an updated description of soil contamination at the individual deposits and indicates a possible solution of the derived environmental problems. Contamination of technosoils by PTEs at the dump-fields shows an irregular spatial distribution of Fe, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Sb and Pb. Contents of PTEs often exceed both national and EU law limits. Whereas at ─Żubietová, Špania Dolina and Caporciano the environmental risk is limited, at Libiola and São Domingos it seems to be very heavy. The technosoil (slag) of the dump-fields is not well aerated and the soil colloids have (except for Špania Dolina) negative surface charge, so they are suitable for PTEs sorption. The main environmental risk in the mining area of Sao Domingos district is the long time formation of acid mine drainage water and the high Zn, As and Pb contents. The release of PTEs to the environmental components may be limited by phytostabilization and immobilization of metals, by suitable admixtures into the technosoil/slag. The environmental situation at Caporciano is not so compromised as at São Domingos mining area. Phytostabilization will be able to stop erosion, and installation of wetlands under the dump will stop the release of Cu to the environment.



Keyword: abandoned Cu mines; potentially toxic elements; dump-fields; technosoil; environmental risk


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