Limited carbon sources prevent sulfate remediation in circumneutral abandoned mine drainage

Comparison of Inocula Applied in the Remediation of Acid Mine Drainage by Sulfate Reduction

Sulfate-reducing permeable reactive zones (PRZs), such as anaerobic wetlands, sulfate-reducing bioreactors, and permeable reactive barriers, are an attractive means of passively treating mining influenced waters contaminated with heavy metals. While the low cost and maintenance requirements are significant advantages of PRZs, the lack of clear design criteria is a disadvantage. It is not known ...

The microbiology of passive remediation technologies for mine drainage treatment

Water draining abandoned mines or mine sites is often acidic and contains relatively high concentrations of dissolved metals and sulfate. Such water (AMD) arises from the oxidative dissolution of sulfidic minerals, such as iron pyrite (FeS2), exposed by mining activities. As AMD production can occur over a very long time scale, passive remediation systems are becoming increasingly important in ...

Bio-Remediation of Acid Mine Drainage in the Sarcheshmeh Porphyry Copper Mine by Fungi: Batch and Fixed Bed Process

Acid mine drainage (AMD) containing high concentrations of iron and sulphate, low pH and variableconcentrations of heavy metals leads to many environmental problems. The concentrations of Cu and Mnare high in the AMD of the Sarcheshmeh porphyry copper mine, Kerman province, south of Iran. In thisstudy, the bio-remediation of Cu and Mn ions from acid mine drainage was investigated using two nati...

THE CENTER FOR A Legislative Agency of the Pennsylvania General Assembly Acid Mine Drainage: Studies in Remediation Acid Mine Drainage: Studies in Remediation Watershed Scale Assessment of an Acid-Mine Drainage Abatement Project in Clarion County

Bioremediation by Sulfate Reducing Bacteria of Acid Mine Drainage

Mining activity produces metal sulfide wastes particularly pyrite which remain in the mine long after operations cease. When water percolates through a mine where oxygen is present, a series of chemical reactions occur which produce extremely low pH and high concentrations of toxic sulfate and metal ions. This toxic leachate can cause severe aquatic habitat degradation downstream of the mine. T...