The migration of potentially toxic elements during the recultivation of the uranium mining deposit in Mecsek

Khumalo, Lamlile; Heltai, György; Horváth, Márk

doi:10.31577/ahs-2019-0020.02.0026

Cited by 2 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to our former study, the pseudo-total concentrations of PTEs were low and below the health-threshold limits (except in one case Cr) [27], their distribution among the fractions can draw attention to potential release to the environment through the covering soil in the present situation.…”

Section: Discussion Of Pte Distributionmentioning

confidence: 86%

“…Additionally, there was no trend in terms of depths, the pseudo-total PTE concentrations varied throughout different depths of each sample. This could be the results of different soil types that were used to form the soil cover layer of the spoil deposit in question [27]. It was also noted that the Rn-M13 sample had similar trends to the RA sample when it came to the distribution of elements except the Rn-M13 contained less concentration of U.…”

Section: Discussion Of Pte Distributionmentioning

confidence: 88%

“…1 was deemed to require further investigation on the mobility of radionuclides and PTEs. This study is the continuation of the research studies conducted by Khumalo et al [26,27] in which the radioactivity in covering soil and plants have been analysed and the pseudo total concentrations of PTEs in soil and plants were determined on spoil deposit No. 1.…”

Section: Introductionmentioning

confidence: 81%

“…The RA sample which was sampled from the bottom of the spoil deposit, had lower pH, low soil moisture (3.16 %), lower CEC with a higher non-residual PTE distribution percentage, whereas the samples collected from the top of the deposit and on the slope showed slightly higher pH, higher CEC, with less non-residual PTE distribution percentage. Furthermore, the study conducted by Khumalo et al [27] indicated that the soil samples collected from the top of the deposit (Rn-M11) contained less average total concentration followed by the sample collected from the slope (Rn-M12) and the samples collected from the bottom of the deposit (Rn-M13 and RA) had the highest average total concentrations. This could be due to the PTEs being transported by the precipitation from the top of the deposit to the bottom of the deposit.…”

Section: Discussion Of Pte Distributionmentioning

confidence: 97%

“…1. This was also indicated that by soil/plant transfer factors calculated from these measurements [27]. However, there have not been studies conducted in this study area on the mobility of these elements using the BCR extraction technique.…”

Section: Introductionmentioning

confidence: 83%

See 4 more Smart Citations

Mobility of Potentially Toxic Elements from the Abandoned Uranium Mine’s Spoil Bank

Khumalo

Heltai

Várhegyi³

et al. 2021

Ecological Chemistry and Engineering S

Self Cite

View full text Add to dashboard Cite

This study is part of the ongoing environmental monitoring program of the abandoned Mecsek uranium mine during the remediation period. During this program on the recultivated No.1 spoil bank, the radioactivity and the potentially toxic element (PTE) contents in the covering soil had shown some anomalies which refers to possible migration alongside the slope. Therefore, in a previous study, soil and plant samples were collected from top to bottom position of the slope and the total element content was determined by multi-elemental inductively coupled plasma-optical emission spectrometry. The results have indicated that there was a high possibility for PTEs to be mobile and available for uptake by plants. To confirm this indication in the present study for the soil samples the BCR sequential extraction procedure was applied to characterise the environmental mobility of PTEs, and it was compared with soil pH and cation exchange capacity (CEC). The results indicated that the ratio of Cd, Co, Mn, Pb, and U in the non-residual fractions ranged between 36.8 to 100 % and increased from top to bottom direction. The comparison showed that the samples with the lowest pH and CEC had the most mobility of the PTEs. The distribution of U, Cd, Mn, Co, and Pb in fractions indicated that some parts of the spoil deposit require additional steps to hinder the migration through the covering soil layer, and the BCR sequential extraction procedure has proven to be useful in providing information for the planning and management of remediation operations.

show abstract

Section: Discussion Of Pte Distributionmentioning

confidence: 86%

Section: Discussion Of Pte Distributionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 81%

Section: Discussion Of Pte Distributionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 83%

See 3 more Smart Citations

Mobility of Potentially Toxic Elements from the Abandoned Uranium Mine’s Spoil Bank

Khumalo

Heltai

Várhegyi³

et al. 2021

Ecological Chemistry and Engineering S

Self Cite

View full text Add to dashboard Cite

show abstract

A Study on the Possible Relationship between Physico-Chemical Properties of the Covering Soil and the Mobility of Radionuclides and Potentially Toxic Elements in a Recultivated Spoil Bank

Horváth

Heltai

Várhegyi³

et al. 2022

Minerals

Self Cite

View full text Add to dashboard Cite

This study is part of the ongoing environmental monitoring program of the abandoned Mecsek uranium mine. On the mine’s recultivated spoil deposit No. I, anomalies that refer to possible migration alongside the slope were detected. The present study was conducted to supplement the ongoing monitoring study with a sampling strategy and analytical methods that can characterize the mobility of potentially toxic elements and radionuclides. A sampling strategy was developed: the vegetation and soil core samples were collected from the slope from top to bottom of the deposit, and nearby this spoil deposit, water samples were collected. Elemental analyses were conducted: the pseudo-total analysis, a total concentration of uranium in water, and the BCR sequential extraction analysis. The radionuclides were determined by gamma spectrometry and alphaGUARD. Additionally, the soil and plant moisture content, soil organic matter, pH, and cation exchange capacity (CEC) were determined. The Pearson correlation analysis and the principal component analysis, considering all possible influencing factors, verified that the elemental concentration increase from the top to the bottom direction of the deposit is strongly influenced by the soil pH, CEC, and Ca content. The mobility of Cd, Co, Mn, Pb, and U is relatively high and significantly migrates down the slope.

show abstract

The migration of potentially toxic elements during the recultivation of the uranium mining deposit in Mecsek

Cited by 2 publications

References 0 publications

Mobility of Potentially Toxic Elements from the Abandoned Uranium Mine’s Spoil Bank

Mobility of Potentially Toxic Elements from the Abandoned Uranium Mine’s Spoil Bank

A Study on the Possible Relationship between Physico-Chemical Properties of the Covering Soil and the Mobility of Radionuclides and Potentially Toxic Elements in a Recultivated Spoil Bank

Contact Info

Product

Resources

About