A modified medium that significantly improves the bioleaching process

A. ferrooxidans is a bacterium that involved in the bioleaching process. This bacterium uses reduced iron or sulphur compounds along with elemental sulphur as source of energy. In the presence study, the uranium bioleaching and ability of oxidize iron of A. ferrooxidans in the presence of 9k and modified 9k (Pepton and Triptic Soy Broth (TSB)) mediums were investigated. For this purpose, A. ferrooxidans cultivated in 9k and modified 9k mediums in the presence of 12/5% uranium ore. Then, the uranium extraction, ferrous iron and Eh value were measured in 24h intervals. The results of experiments showed that the uranium extraction, oxidation of iron and Eh value were improved in modified 9k medium. It means that the use of Pepton and Triptic Soy Broth was more appropriate for uranium bioleaching process using A. ferrooxidans.

کلیدواژه ها:

A. ferrooxidans ، Uranium bioleaching ، Modified 9k medium