New alicyclobacillus strain and application thereof in bioleaching

Abstract

The invention relates to a new alicyclobacillus strain and an application thereof in bioleaching. The conservation number of the screened alicyclobacillus strain is CGMCC 4500; and the strain is cultured at the temperature of 25-35 DEG C and grows within the pH range of 1.5-5.0. The strain can be applied in the bioleaching field such as pyrite leaching. The alicyclobacillus strain has an acidophilic character, and can grow by taking ferrous ions as an energy matrix and fixed CO2 as a carbon source and meanwhile can rapidly grow by virtue of organicnutrition, thus the strain is suitable for large-scale amplification culture so as to be applied in the bioleaching field. Studies show that the new alicyclobacillus strain has the advantages of high leaching rate, short leaching time, no environmental pollution and the like, and metal ions therein have high tolerance and are free from inhibition of organic matters in the system.

Description

technical field

[0001] The invention belongs to the technical field of microbial leaching, and in particular relates to a new strain of Alicyclobacillus and its application in bioleaching. Background technique

[0002] With the continuous development and utilization of mineral resources, rich ore and high-quality ore resources are becoming increasingly scarce, while the proportion of low-content ore increases accordingly, causing conventional treatment methods to face severe challenges in both technical and economic aspects. Biometallurgy has the characteristics of high leaching efficiency, low energy consumption, simple process and environmental protection, especially for some low-grade rare mineral deposits, which can achieve leaching efficiency that cannot be achieved by traditional physical and chemical processes. focus of attention.

[0003] At present, the microbial leaching strains used in biometallurgy are all chemoautotrophic microorganisms, which grow slowly and h...