A novel method of dissolving realgar by immobilized Acidithiobacillus ferrooxidans

作者:Xie Qinjian; Yu Lan; Li Zhihua; Liu Heng; Liu Zhiyuan; Guo Zhiwang; Wu Zhengrong; Zhu Hongmei; Sun Ying; Khan Akbar; Li Hongyu*
来源:International Journal of Mineral Processing, 2015, 143: 39-42.
DOI:10.1016/j.minpro.2015.08.003

摘要

Due to the toxic and un-dissolvable properties, the medical application of realgar (As4S4) has always been limited for a long time. In this study, a novel method of dissolving realgar by immobilized Addithiobacillus ferrooxidans (A. ferrooxidans) is introduced. The characterizations of dissolving realgar are carried out by means of SEM, ICP-AES, XRD and FTIR. The results suggest that the bio-transformation process is influenced by extracellular substances such as pH value and the oxidation of Fe2+. These extracellular substances affect the concentration of arsenic in bio-transformation solution rather than A. ferrooxidans. Present study reveals the novel application of A. ferrooxidans.