4 results about "Acidithiobacillus" patented technology

The present invention relates to bioleaching of tailings and concentrates at temperatures above 30°C to obtain cobalt and other metals, using a specific consortium of microorganisms that allows high recovery of said metals. The consortium is referred to as "Kobold B(S)" (DMS 35389) and is made up of three layers which belong to three genera of microorganisms: Sulfobacillus, Acidithiobacillus and Leptospirillum.

The invention discloses extreme acidithiobacillus acidophilus based on sulfur metabolic pathway enhancement as well as a construction method and application of the extreme acidithiobacillus acidophilus. According to the invention, based on conjugational transfer, sulfide of Acidithiobacillus caldus, namely a quinone oxidoreductase SQR gene is over-expressed, a promoter Amp is adopted for starting expression, an extreme acidophilic engineering bacterium A. caldus-G-SQR is constructed, and compared with wild type A. caldus, the acid stress tolerance, sulfur oxidation capacity and intracellular ATP (adenosine triphosphate) generation capacity of the extreme acidophilic engineering bacterium A. caldus-G-SQR are all improved. The core effect of the SQR in strain environmental adaptation and metabolic regulation is fully verified.

The application provides an extreme acidophilic sulfur-oxidizing bacterium and application thereof. The extreme acidophilic bacterium has strong oxidation on elemental sulfur and tetrathionate ions, is a chemolithoautotrophic acidithiobacillus, and can be used for removing elemental sulfur and tetrathionate ions in the environment, and has wide application prospects. The acidophilic sulfur-oxidizing bacterium has a preservation number of CGMCC No. 14839. The optimal growth temperature of the biological leaching and desulfurization provided by the application is normal temperature, and the optimal growth pH range is wide, so that the strain of the application has practical application significance. In addition, due to the characteristics of chemolithoautotrophy, the strain can improve the climate environment while recovering the environment.

The invention relates to the technical field of biological treatment of solid wastes, and discloses thiobacillus thiooxidans resistant to toxicity of Ni and Cu and application of the thiobacillus thiooxidans. Wherein the thiobacillus thiooxidans is the thiobacillus thiooxidans QH2C, and the preservation number of the thiobacillus thiooxidans is GDMCC No: 63521. The invention further discloses a preparation method of the thiobacillus thiooxidans. The invention provides a novel thiobacillus thiooxidans QH2C, and the strain has high toxicity tolerance to Ni and Cu, so that the strain can be used for treating metal-containing solid wastes with higher ore pulp density in batches, the biological leaching treatment efficiency is improved, and the application prospect is good.