EXPERT TALK ON WASTE MANAGEMENT IN COIMBATORE CITY, KPR Institute Engineering and Technology, Autonomous Engineering Institution, Coimbatore, India

Biomining place the major role in CCMC, CorBiomining is a biotechnological process that uses microorganisms to extract metals from ores and concentrates. This environmentally friendly and cost-effective method has gained popularity as an alternative to traditional mining techniques. Here are some key aspects of biomining:

1. Microorganisms: Biomining primarily relies on the activity of naturally occurring or genetically modified microorganisms such as bacteria, archaea, and fungi. These microorganisms are capable of solubilizing and mobilizing metals from ore minerals.

2. Types of Biomining:

   • Bioleaching: This process involves the use of microorganisms to oxidize metal sulfides in ores, releasing the metal ions into solution. Commonly used microorganisms in bioleaching include Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans.

   • Biosorption: Certain microorganisms have a high affinity for metal ions and can adsorb them onto their cell surfaces. These ions can then be recovered from the biomass.

3. Benefits of Biomining:

   • Environmentally Friendly: Biomining reduces the environmental impact associated with traditional mining methods, such as acid mine drainage and habitat destruction.

   • Lower Energy Consumption: It typically requires less energy compared to conventional mining and mineral processing.

   • Recovery of Low-Grade Ores: Biomining can economically recover metals from low-grade ores that are not viable for traditional mining.

   • Reduced Waste: Biomining generates fewer waste materials because it selectively targets the desired metals.