4 results about "Acidithiobacillus ferrooxidans" patented technology

The invention belongs to the technical field of cell immobilization, and particularly relates to an acidophilic thiobacillus ferrooxidans immobilization material and application thereof in cell immobilization and desulfurization. According to the acidithiobacillus ferrooxidans immobilized material, Fe3O4 nano-clusters are used as raw materials, a PDA shell layer with a mesoporous structure is formed on the surfaces of the Fe3O4 nano-clusters by means of self-polymerization reaction of dopamine, a nano composite material Fe3O4 (at) mPDA is constructed, meanwhile, biotinylated chitosan derivatives Bio-CS are synthesized by using biotin as raw materials, and the acidithiobacillus ferrooxidans immobilized material is prepared. And combining the Fe3O4 (at) mPDA with a biotinylated chitosan derivative Bio-CS by virtue of an emulsification method, thereby obtaining the Fe3O4 (at) mPDA. The acidithiobacillus ferrooxidans immobilized material provided by the invention can be used for immobilizing acidithiobacillus ferrooxidans. The material provided by the invention not only can effectively maintain the biological activity of the acidithiobacillus ferrooxidans BY3, but also has the advantages of mild reaction conditions, no secondary pollution and capability of maintaining the cyclic utilization of Fe < 3 + >, so that the method meets the manufacturing requirements of a green biotechnology.

Methods and genomic editing systems for Acidithiobacillus ferrooxidans are described herein involving use of Cpf1 (Cas12a).

This application provides a method for enhanced bioleaching of uranium ore based on sulfur autotrophic denitrification pre-desulfurization, comprising: placing uranium ore in a reactor, inoculating with sulfur autotrophic denitrifying bacteria, and introducing nitrate-containing feed water under anoxic conditions; utilizing the denitrifying bacteria to selectively oxidize and remove the sulfide coating layer on the ore surface by using sulfide-iron compounds in the uranium ore as electron donors and nitrates as electron acceptors, to obtain desulfurized uranium ore; then placing the desulfurized uranium ore in a leaching system and inoculating with *Acidithiobacillus ferrooxidans* for bioleaching to achieve uranium extraction. This invention selectively removes the sulfide coating layer on the uranium ore surface through sulfur autotrophic denitrification pre-desulfurization treatment, fully exposing the uranium minerals and significantly improving bioleaching efficiency. After optimized process treatment, the uranium leaching rate increased from 41.2% in the untreated ore to 66.5%. This method has high selectivity and low operating costs, providing a new technical path for the efficient extraction of low-grade, complex, associated uranium ores.

The application relates to the technical field of electronic material preparation, and particularly discloses a lead-ruthenate preparation method based on acidithiobacillus ferrooxidans mediation. The application takes soluble lead salt and soluble ruthenium salt as raw materials, utilizes the biological metabolic characteristics of acidithiobacillus ferrooxidans, regulates the oxidation-reduction environment and ion adsorption-deposition behavior of the system, realizes the directional synthesis of a lead-ruthenate precursor under mild conditions, and obtains high-purity and high-crystallinity lead-ruthenate powder through subsequent calcination treatment. The method has the advantages of mild reaction conditions, high raw material utilization rate, controllable product purity, green environmental protection and the like, solves the technical problems of high energy consumption of a traditional high-temperature solid-phase method, easy product agglomeration, complex process of a sol-gel method and high cost, and the prepared lead-ruthenate powder has good application prospects in the fields of thick-film resistors, high-temperature electrode materials and the like.