Biogeochemistry Processes of Acid Mine Drainage and Effects on Materials Alteration
A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Environmental Mineralogy and Biogeochemistry".
Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 177
Special Issue Editor
Interests: acid mine drainage; durability in metallic materials; biogeochemistry in AMD media; concrete degradation; methods for protecting structural materials
Special Issue Information
Dear Colleagues,
Acid mine drainage (AMD) is a common type of pollution in mining facilities that is produced due to the extraction of Fe sulphide minerals such as pyrite, which has been exploited since Roman times until the present days, deposits of which are present throughout five continents. This type of contamination occurs not only in the mining operating facilities but also, more markedly, in abandoned facilities.
The polluting processes not only have a direct and negative effect on water quality in streams and rivers but also indirectly affect the durability of structural materials, such as steel and concrete, due to their highly aggressive character.
Metallic materials suffer corrosion processes that are strongly accelerated in acidic environments, and when concrete comes into contact with acidic and saline waters (as is the case of AMD), its integrity is negatively affected. The degradation of these materials represents a significant problem for mining companies that exploit polymetallic sulphides in their exploitation phases.
There are two types of corrosion caused by acidic mine water: chemical corrosion, caused by sulphur compounds and other acidic agents, and microbiological corrosion, where biological organisms cause the alteration or acceleration of the corrosion process. In metallic materials, corrosion can cause thinning, brittle fractures, fatigue cracks, and failures.
- Section 1. Influence of chemical factors on the materials’ degradation affected by AMD.
- Section 2. Influence of biological factors on the materials’ degradation affected by AMD.
- Section 3. Treatments to improve the durability of materials affected by AMD.
Dr. José Miguel Dávila Martín
Guest Editor
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Keywords
- acid mine drainage
- biogeochemistry
- hydrogeochemistry
- corrosion
- durability
- degradation
- materials alteration
- cracks
- metal concentrations
- pollution
- sulphates
- diatoms
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