Bioaccumulation and Mineral Leaching

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Sulphur Phosphorus and Trace Element Nutrition Sulphur Phosphorus Solubilization of Tricalcium Phosphate or Calcium Phytate by Isolates of Soil Fungi Agronomical Aspects

Bioaccumulation and Mineral Leaching

Bioaccumulation and Mineral Leaching

It is now well known that in sewage treatment processes, metals such as copper, nickel and cadmium are precipitated by bacteria, thereby purifying the waste water. Bacterial leaching of metals has ben exploited and nearly 5 per cent metal production in the world comes from this 'low technology' source applicable to low grade mineral ores such as pyrite and metal sulphides. Somewhat similar technology is applicable to enrichment of uranium and gold by microbial leaching.

Thiobacillus ferrooxidans, T. thiooxidans and consortium of other bacteria are involved in metal sulphide leaching and iron oxidation, The Leptospirillum group (iron bacteria) also contribute to recovery of iron. The economics involved in microbial processes by mechanization and scaling up of such processes need careful review. However, the science of biometallurgy, remains a fascinating area of study for microbiologists and metallurgists alike.

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Effect of Phosphate Solubilizing Microorganisms on Various Crops in Some Field Experiments in India Trace Elements Manganese Copper Iron Bioaccumulation and Mineral Leaching

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