Alkaliphilic sulfur-oxidizing bacterium and its application in water pollution treatment and bioleaching

By isolating and applying the deep-sea alkali-producing sulfur-oxidizing bacterium Stutzerimonas sp. 381-2, the problem of the difficulty in oxidizing sulfide minerals in deep-sea hydrothermal environments has been solved, achieving efficient metal resource recovery and water pollution control, and improving resource utilization efficiency and environmental protection effects.

CN120988885BActive Publication Date: 2026-04-14SECOND INST OF OCEANOGRAPHY MNR
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Patent Information

Application Number
CN202511076563.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2025-07-29
Filing Date
2025-08-01
Publication Date
2026-04-14
Estimated Expiration
2045-08-01

AI Technical Summary

Technical Problem

In existing technologies, the application of alkali-producing sulfur-oxidizing bacteria in deep-sea hydrothermal environments has not been fully developed, making it difficult to effectively oxidize sulfide minerals, resulting in low metal resource recovery efficiency and serious environmental pollution.

Method used

A strain of alkali-producing sulfur-oxidizing bacterium, Stutzerimonas sp. 381-2, from a deep-sea hydrothermal vent region was isolated and identified. It has a strong ability to oxidize thiosulfate ions and can be applied to water pollution control and bioleaching. By oxidizing metal sulfides, it promotes the release of metal ions and increases pH value, thereby achieving mineral leaching and pollutant degradation.

Benefits of technology

This strain can efficiently oxidize thiosulfate ions with a removal rate of up to 95%, while maintaining the environmental pH at neutral or slightly alkaline, thereby improving the metal extraction rate and reducing the metal content in water, achieving environmentally friendly and efficient resource recycling and pollution control.

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Abstract

The present application relates to the technical field of health, environmental management and resource development, and discloses an alkaline-sulfur oxidizing bacteria and its application in water pollution treatment and bioleaching. The alkaline-sulfur oxidizing bacteria is named 381-2, which has been preserved in the China General Microbiological Culture Collection Center on December 23, 2024, and the preservation number is CGMCC No. 33017; the microbial classification name is Stutzerimonas sp. The present application isolates a new species of Stizolobium strain from a deep-sea hydrothermal area Stutzerimonas sp. . The strain has strong and rapid oxidation ability of thiosulfate ions, and also has the characteristics of producing alkali, so it can be applied to the fields of water pollution treatment and bioleaching.
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