Leachability of major and minor elements from soils and sediments of an abandoned coal mining area in Southern Brazil

2015 ◽  
Vol 187 (3) ◽  
Author(s):  
Maria Josefa Santos ◽  
César Ricardo Teixeira Tarley ◽  
Isabella Cunha ◽  
Iago Zapelini ◽  
Evgeny Galunin ◽  
...  
Keyword(s):  
Coal Mining ◽  
Mining Area ◽  
Southern Brazil ◽  
Coal Mining Area ◽  
Minor Elements ◽  
Soils And Sediments

scholarly journals Geochemistry of acid mine drainage from a coal mining area and processes controlling metal attenuation in stream waters, southern Brazil

2014 ◽  
Vol 86 (2) ◽  
pp. 539-554 ◽  
Author(s):  
VERIDIANA P. CAMPANER ◽  
WANILSON LUIZ-SILVA ◽  
WILSON MACHADO
Keyword(s):  
Chemical Composition ◽  
Coal Mining ◽  
Surface Waters ◽  
Mine Drainage ◽  
Mining Area ◽  
Southern Brazil ◽  
Acid Drainage ◽  
Coal Mining Area ◽  
Brazilian Legislation ◽  
Ph Range

Acid drainage influence on the water and sediment quality was investigated in a coal mining area (southern Brazil). Mine drainage showed pH between 3.2 and 4.6 and elevated concentrations of sulfate, As and metals, of which, Fe, Mn and Zn exceeded the limits for the emission of effluents stated in the Brazilian legislation. Arsenic also exceeded the limit, but only slightly. Groundwater monitoring wells from active mines and tailings piles showed pH interval and chemical concentrations similar to those of mine drainage. However, the river and ground water samples of municipal public water supplies revealed a pH range from 7.2 to 7.5 and low chemical concentrations, although Cd concentration slightly exceeded the limit adopted by Brazilian legislation for groundwater. In general, surface waters showed large pH range (6 to 10.8), and changes caused by acid drainage in the chemical composition of these waters were not very significant. Locally, acid drainage seemed to have dissolved carbonate rocks present in the local stratigraphic sequence, attenuating the dispersion of metals and As. Stream sediments presented anomalies of these elements, which were strongly dependent on the proximity of tailings piles and abandoned mines. We found that precipitation processes in sediments and the dilution of dissolved phases were responsible for the attenuation of the concentrations of the metals and As in the acid drainage and river water mixing zone. In general, a larger influence of mining activities on the chemical composition of the surface waters and sediments was observed when enrichment factors in relation to regional background levels were used.

scholarly journals Organic matter in constructed soils from a coal mining area in southern Brazil

2006 ◽  
Vol 37 (11) ◽  
pp. 1537-1545 ◽  
Author(s):  
Deborah P. Dick ◽  
Heike Knicker ◽  
Leticia G. Ávila ◽  
Alberto V. Inda ◽  
Elvio Giasson ◽  
...  
Keyword(s):  
Organic Matter ◽  
Coal Mining ◽  
Mining Area ◽  
Southern Brazil ◽  
Coal Mining Area

Blood markers among residents from a coal mining area

2020 ◽  
Vol 28 (2) ◽  
pp. 1409-1416
Author(s):  
Ana Paula Bigliardi ◽  
Caroline Lopes Feijo Fernandes ◽  
Edlaine Acosta Pinto ◽  
Marina dos Santos ◽  
Edariane Menestrino Garcia ◽  
...  
Keyword(s):  
Coal Mining ◽  
Mining Area ◽  
Coal Mining Area

Slow surface subsidence and its impact on shallow loess landslides in a coal mining area

CATENA ◽  
2022 ◽  
Vol 209 ◽  
pp. 105830
Author(s):  
Dongdong Yang ◽  
Haijun Qiu ◽  
Shuyue Ma ◽  
Zijing Liu ◽  
Chi Du ◽  
...  
Keyword(s):  
Coal Mining ◽  
Mining Area ◽  
Surface Subsidence ◽  
Coal Mining Area ◽  
Slow Surface ◽  
Loess Landslides
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