Concentrations of heavy metals and measurement of 40K in mine tailings in Zacatecas, Mexico

2021 ◽  
Vol 80 (5) ◽  
Author(s):  
Miguel Angel Salas-Luevano ◽  
Rosa Puente-Cuevas ◽  
Hector Rene Vega-Carrillo
Keyword(s):  
Heavy Metals ◽  
Mine Tailings

Bioleaching of arsenic and heavy metals from mine tailings by pure and mixed cultures of Acidithiobacillus spp.

2015 ◽  
Vol 21 ◽  
pp. 451-458 ◽  
Author(s):  
Van Khanh Nguyen ◽  
Mu Hyun Lee ◽  
Hyung Jun Park ◽  
Jong-Un Lee
Keyword(s):  
Heavy Metals ◽  
Mine Tailings ◽  
Mixed Cultures

The effects of organic acids on the leaching of heavy metals from mine tailings

1995 ◽  
Vol 41 (2-3) ◽  
pp. 135-145 ◽  
Author(s):  
S.R. Burckhard ◽  
A.P. Schwab ◽  
M.K. Banks
Keyword(s):  
Heavy Metals ◽  
Organic Acids ◽  
Mine Tailings

Ocena Właściwości Technogenicznych Utworów Glebowych Technosols Zawierających Siarczki Żelaza / Assessment of Properties of Technogenic Soils Technosols Containing Iron Sulfides

2012 ◽  
Vol 63 (3) ◽  
pp. 37-42 ◽  
Author(s):  
Łukasz Uzarowicz ◽  
Alina Maciejewska
Keyword(s):  
Heavy Metals ◽  
Coal Mine ◽  
Mine Tailings ◽  
Hard Coal ◽  
Iron Sulfides ◽  
Radioactive Elements ◽  
Rock Fragments ◽  
Technogenic Soils ◽  
Strong Acidity

Abstract Technogenic soils (Technosols) developed from mine tailings containing iron sulfides occurring in the area of the abandoned .Siersza. hard coal mine in Trzebinia and the abandoned .Staszic. pyrite mine in Rudki were investigated in order to assess their properties. The study revealed that the most adverse properties of the technogenic soils investigated are: strong acidity (pH below 3), the presence of large amounts of rock fragments containing unweathered sulfides, as well as the occurrence of heavy metals (e.g. Pb, As, and Tl) and radioactive elements (U and Th). All these properties should be taken into account during management of the studied mine tailings.

Mobility of Ra-226 and Heavy Metals (U, Th and Pb) From Pyritic Uranium Mine Tailings Under Sub-Aqueous Disposal Conditions

2011 ◽  
Author(s):  
Nand K. Dave´
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Mine Tailings ◽  
Ion Concentration ◽  
Uranium Mine ◽  
Acid Generation ◽  
Shallow Zone ◽  
Acidic Conditions ◽  
Waste Repositories

Laboratory lysimeter studies were undertaken to evaluate the leaching characteristics and mobility of Ra-226 and other heavy metals (U, Th and Pb) from pyritic uranium mine tailings under sub-aqueous disposal conditions for assessing the long-term radiological stability of such waste repositories. The experiments were conducted using three types of un-oxidized tailings: fine, coarse and gypsum depleted mill total tailings. The results showed that Ra-226 was leached from surface of the submerged tailings and released to both surface water and shallow zone pore water during initial low sulphate ion concentration of the surface water cover in all three cases. The release of Ra-226 was further enhanced with the onset of weak acidic conditions in the surface water covers of both coarse and gypsum depleted mill total tailings. With additional acid generation and increasing sulphate and iron concentrations, the dissolved Ra-226 concentrations in the water covers of these tailings gradually decreased back to low levels. Pb was also leached and mobilized with the development of moderate acidic conditions at the surface of the submerged coarse and gypsum deplete tailings. No leaching of U and Th was observed.

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