| 摘要 |
Bacterial cultures of Acidithiobacillus thiooxidans are isolated, maintained and identified and used in the treatment of materials containing sulfur-compounds, such as contaminated and/or spent catalysts with elemental sulfur (S). Bacterial cultures of Acidithiobacillus thiooxidans exhibit sulfur-oxidizing activity particularly useful in the transformation of elemental sulfur (S) to sulfates (SO4), a compound soluble in water (H2O) and usable in industry. The bacterial cultures of Acidithiobacillus thiooxidans are mainly used as a biological or biotechnological procedure for the treatment of contaminated and/or spent catalysts with elemental sulfur (S) hazardous contaminated wastes that are mainly, but not exclusively, from the Claus process that operates at environmental conditions; does not impact the environment or ecosystem; and recovers 91-100% of the elemental sulfur (S) in sulfate form (SO4), a compound that is water soluble (H2O, for its future re-use or for the safe dispositi on of the catalysts. At the end of the biotechnological treatment, the treated industrial catalysts may be arranged in a safer manner, this is, these would no longer represent an exposition risk to human beings. |
