scholarly journals Using Meiobenthic Species as a Measure of the Impact of Acid Mine Outflows on the Tioga River in North Central Pennsylvania

2007 ◽  
Vol 6 (3) ◽  
Author(s):  
Carissa Ganong ◽  
Gregory Carson ◽  
John Kirby
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
North Central ◽  
Acid Mine ◽  
Chemical Indicators ◽  
Central Pennsylvania ◽  
The Impact ◽  
Macroinvertebrate Species

In this study meiobenthic communities were sampled from several acid mine drainage (AMD) impacted sites along the Tioga River in North Central Pennsylvania. Concentrations of several chemical indicators of aquatic health (Fe+2/Fe+3, Mn+2, and SO4-2) were measured along with the pH. Meiobenthic communities were present at all AMD impacted locations but diversity and abundance varied. The diversity and abundance at the AMD impacted sites was inversely related to the concentration of several key acid mine drainage indicators. Macroinvertebrate species were collected only at the unimpacted head waters of the Tioga River. All other sampled locations were devoid of macroinvertebrate species.

scholarly journals Induction of a geochemical barrier for As, Fe and S immobilization in a sulfide substrate

2012 ◽  
Vol 36 (2) ◽  
pp. 671-679 ◽  
Author(s):  
Igor Rodrigues de Assis ◽  
Luiz Eduardo Dias ◽  
Emerson Silva Ribeiro Jr ◽  
Walter Antônio Pereira Abrahão ◽  
Jaime Wilson Vargas de Mello ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Environmental Concern ◽  
Experimental Period ◽  
Control Treatment ◽  
Geochemical Barrier ◽  
Acid Mine ◽  
Element Mobilization ◽  
Co Precipitation ◽  
The Impact

Acid mine drainage (AMD) is an environmental concern due to the risk of element mobilization, including toxic elements, and inclusion in the food chain. In this study, three cover layers were tested to minimize As, Fe and S mobilization from a substrate from former gold mining, containing pyrite and arsenopyrite. For this purpose, different layers (capillary break, sealant and cover layer) above the substrate and the induction of a geochemical barrier (GB) were used to provide suitable conditions for adsorption and co-precipitation of the mobilized As. Thirteen treatments were established to evaluate the leaching of As, Fe and S from a substrate in lysimeters. The pH, As, Fe, S, Na, and K concentrations and total volume of the leachates were determined. Mineralogical analyses were realized in the substrate at the end of the experimental period. Lowest amounts of As, Fe and S (average values of 5.47, 48.59 and 132.89 g/lysimeter) were leached in the treatments that received Na and K to induce GB formation. Mineralogical analyses indicated jarosite formation in the control treatment and in treatments that received Na and K salts. However, the jarosite amounts in these treatments were higher than in the control, suggesting that these salts accelerated the GB formation. High amounts of As, Fe and S (average values of 11.7, 103.94 and 201.13 g/lysimeter) were observed in the leachate from treatments without capillary break layer. The formation of geochemical barrier and the use of different layers over the sulfide substrate proved to be efficient techniques to decrease As, Fe and S mobilization and mitigate the impact of acid mine drainage.

scholarly journals The impact of acid mine drainage (AMD) on the distribution of selected radionuclides in the sediments of two pit lakes in the Muskau Arch (western Poland)

2021 ◽  
Author(s):  
Ilona Sekudewicz ◽  
Michał Gąsiorowski ◽  
Šárka Matoušková ◽  
Jan Rohovec ◽  
Karolina Kaucha
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Acid Mine ◽  
Pit Lakes ◽  
The Impact

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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