Uptake and Distribution of Zinc, Cadmium, Lead and Copper inBrassica napus var. oleíferaandHelianthus annusGrown in Contaminated Soils

2003 ◽  
Vol 5 (2) ◽  
pp. 153-167 ◽  
Author(s):  
E. M. Herrero ◽  
A. López-Gonzálvez ◽  
M.A. Ruiz ◽  
J.A. Lucas-García ◽  
C. Barbas
Keyword(s):  
Contaminated Soils ◽  
Zinc Cadmium ◽  
Cadmium Lead

Bioremediation of Acid Mine Drainage in an Uranium Deposit

2007 ◽  
Vol 20-21 ◽  
pp. 248-257 ◽  
Author(s):  
Stoyan N. Groudev ◽  
Plamen S. Georgiev ◽  
Irena Spasova ◽  
Marina Nicolova
Keyword(s):  
Mine Drainage ◽  
Plant Biomass ◽  
Uranium Deposit ◽  
Water Flow Rate ◽  
Ambient Temperatures ◽  
Zinc Cadmium ◽  
Copper Zinc ◽  
Cadmium Lead ◽  
Dead Plant ◽  
The Individual

Acid drainage waters generated in the uranium deposit Curilo, Bulgaria, were treated by means of different passive systems such as natural and constructed wetlands, alkalizing limestone drains, permeable reactive multibarriers and a rock filter, used separately or in different combinations. The waters had a pH in the range of about 2 – 4 and contained radionuclides (uranium, radium), heavy metals (copper, zinc, cadmium, lead, nickel, cobalt, iron, manganese), arsenic and sulphates in concentrations usually much higher than the relevant permissible levels for waters intended for use in agriculture and/or industry. The water flow rate through the individual systems was different and not stable, and varied in the range approximately from 0.02 to 1.5 l/s. Efficient removal of pollutants was achieved by means of these systems during the different climatic seasons, even during the cold winter months at water and ambient temperatures close to 0 oC. The removal was due to different mechanisms but microbial sulphate reduction, biosorption by living and dead plant biomass and chemical neutralization played the main roles.

scholarly journals Formation and characterization of acid mine drainage in the Madzharovo ore field, Southeastern Bulgaria

2021 ◽  
Vol 35 (1) ◽  
pp. 41-50
Author(s):  
Svetlana Bratkova
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Negative Impact ◽  
Sulfide Minerals ◽  
Mining Areas ◽  
Acid Mine ◽  
Zinc Cadmium ◽  
High Concentrations ◽  
Cadmium Lead ◽  
The Impact

The formation of acid mine drainage (AMD) is a serious environmental problem in areas with mining and processing industries worldwide. Their generation is associated with chemical and biological processes of oxidation of sulfide minerals, mainly pyrite. Sources of AMD can be deposits of sulfide minerals and coal with a high content of pyrite sulfur, mining waste and some tailings. The impact of AMD on surface and groundwater in mining areas continues for decades after the cessation of extraction. An example of the negative impact of generated acid mine drainage on the state of surface waters is in the region of Madzharovo. Years after the cessation of mining, the waters at the discharge points "Momina Skala", "Harman Kaya" and "Pandak Dere" are characterized by low pH values and high concentrations of iron, copper, zinc, cadmium, lead and manganese.

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