Biological methods explored for mining waste remediation

Research into environmental remediation highlights different biological approaches to managing mining waste. In New Mexico, studies focused on the vegetational stabilization of uranium mine and mill waste. Findings identified that specific geologic materials, when segregated and placed on the surface of waste dumps, can successfully and economically support the re-establishment of native vegetation while minimizing the uptake of toxic elements by plants.

In South Africa, research addresses acid mine drainage (AMD) caused by gold and coal mining. To protect water resources in a water-stressed region, studies suggest using the dissimilatory reduction (DSR) process as a sustainable alternative to costly chemical treatments. This biological method utilizes sulfate-reducing bacteria to increase pH and precipitate metals. Grass is identified as a potential renewable, cost-effective organic carbon source to drive this remediation process.