Among the microorganism commonly studied for metal recovery, Acidothiobacillusferrooxidans is a well-known example that can oxidize iron and sulfur compounds, making it useful for the recovery of metals such as copper, zinc, and gold. Acidithiobacillusthiooxidans is another species of acidophilic bacteria that can oxidize sulfur compounds and leach metals such as copper and nickel from ores. Leptospirillumferrooxidans is a type of iron-oxidizing bacteria that is commonly used for the recovery of metals such as copper, gold, and zinc. Sulfolobusmetallicus is an archaeal species that thrives in extremely acidic environments and is capable of leaching metals such as copper, iron, and zinc from ores. Chromobacteriumviolaceum, a gram-negative bacterium, has been shown to accumulate silver and gold nanoparticles, making it a potential candidate for metal recovery. Pseudomonas fluorescens, a common soil bacterium, has been shown to have potential for the recovery of metals such as copper and nickel. One of the main advantages of microbial technology for metal recovery is its environmental sustainability. Unlike traditional metal extraction methods, microbial technology does not involve the use of toxic chemicals or generate harmful waste products. Additionally, this technology can be used to extract metals from low-grade ores that are not economically feasible to process using traditional methods. However, the use of microbial technology is not without its challenges. One major challenge is the optimization of conditions for microbial growth and metal recovery, which can be affected by factors such as pH, temperature, and nutrient availability. Another challenge is the need for large-scale infrastructure for microbial cultivation and metal recovery. In summary, microbial technology offers a promising alternative to traditional metal extraction methods, and ongoing research is exploring the potential of different microorganisms for this application. As this technology continues to evolve, it has the potential to become an important tool for sustainable metal recovery and contribute to the development of a circular economy.