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Acid Mine Drainage Presentation Assignment
Question 1: Prepare presentation on Acid Mine Drainage
Introduction
- Acid Mine Drainage (AMD) is considered as the main pollutant of surface water in the Atlantic region. In a nutshell, acid mine drainage happens during the rain or dream meet the rocks with rich in sulphur (Sosbluewaters.org, 2019). It comes from coalmines and active mining. It restricts the stream and endangers aquatic lives. The study will focus on the sources and consequences of acid mine drainage on the environment.
Mine drainage
- Mine drainage is formed from chemical reactions of metal reach water and rocks containing sulphur rich materials.
- Metal-rich drainage occurs in several areas and mineralized contacts that are not mined.
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Acid mine drainage
- Acid mine drainage is found from 1800s when the minds were developed to utilise the gravity drainage in order to avoid water accumulation (Thoughtco.com, 2019).
- As its consequence, water is polluted by iron, sulphur, acid, aluminium and others drained away from the mines.
Where Acid Mine Drainage Happens
- It occurs where mining is done by extracting metals or coals from gold, silver, zinc and lead containing rocks (Chen et al. 2016).
- Rainwater or steam is defined through the mine's tailings.
How does Mine Drainage Occur?
- Mine drainage occurs when iron sulphide is exposed with water and air.
- Sulphuric acid is formed and dissolves to the iron.
- Iron can precipitate to form yellow, red or orange sediment in the stream containing the drainage (Chen et al. 2016).
- Degree and rate of acid mine drainage can be increased with the action of bacteria.
What type of mining are responsible for acid mine drainage?
- Tailings piles or pond
- Coal spoils (Zipper, Skousen & Jage, 2018)
- Rock dumps
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Consequences of Acid Mine Drainage
- Acid mine drainage pollutes the water (Kefeni, Msagati & Mamba, 2017)
- Drinking water is contaminated as well as the groundwater may be affected.
- Due to corrosiveness, it damages infrastructure of bridge, culvert and stream water pipes.
Economic concerns
- The region is affected by acid mine drainage and it has the economic negative consequences.
Solutions
- Treatment of acidic stream can be conducted to buffer the low pH in the water.
- The system of lowering the pH required regular complete engineering that it can be only certain conditions (Kefeni, Msagati & Mamba, 2017).
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Conclusion
- It is found that acid mine drainage is done while extracting metals or coals from the rock. The study has been focused to affect the acid mine drainage while the streams are located and the rocks can be broken up to exposed in water or air. Study has discussed the causes and consequences of the acid mine drainage with economic as well as ecological loss for environment.