Method for constructing functional bacteria group resistant to cadmium and degrading long side chain plasticizer and product thereof

By constructing a functional microbial community tolerant to cadmium, the problem of insufficient degradation capacity of long-chain PAEs under high concentrations of Cd was solved, achieving efficient degradation of long-chain PAEs in a compound pollution environment, with significant synergistic degradation effect and stability.

CN122104465APending Publication Date: 2026-05-29NANJING AGRICULTURAL UNIVERSITY
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING AGRICULTURAL UNIVERSITY
Filing Date
2026-02-11
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In systems where high concentrations of Cd coexist with long-chain PAEs, the degradation capacity of functional strains in existing technologies for long-chain PAEs is reduced, especially under Cd stress conditions, resulting in low degradation efficiency and making it difficult to meet the remediation needs of complex polluted environments.

Method used

To construct a functional microbial community that is tolerant to cadmium and degrades long-side-chain plasticizers, three strains of *Bacillus glutamate*, *Pseudomonas*, and *Bacillus* were selected for bacterial suspension preparation, cadmium-tolerant acclimatization, and construction of a composite functional microbial community, ensuring that the community maintains high-efficiency degradation capacity under Cd2+ gradient conditions.

Benefits of technology

At Cd2+ concentrations as high as 5-10 mg/L, the functional bacterial community achieved a degradation rate of over 85% for long-side-chain PAEs, significantly improving the survival ability and degradation efficiency of the community in complex polluted environments and solving the problem of insufficient degradation by single strains under heavy metal stress.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122104465A_ABST
    Figure CN122104465A_ABST
Patent Text Reader

Abstract

The present application relates to the technical field of organic-inorganic composite pollution system remediation, and particularly relates to a method for constructing a functional bacterial flora capable of resisting cadmium and degrading long-side-chain plasticizers and a product thereof; the preparation method comprises the following steps: S1, preparing a bacterial suspension; S2, cadmium-resistance domestication of the functional bacterial strain; S3, construction of the cadmium-resistance composite functional bacterial flora; the present application is based on a functional bacterial strain with high PAEs degradation capacity, and through cadmium-resistance domestication and multi-proportion compounding, a functional bacterial flora capable of maintaining high efficient degradation of long-side-chain PAEs in a Cd stress environment is obtained; the research results show that the bacterial flora still has a good removal effect on PAEs under the coexistence of PAEs and Cd, has strong Cd tolerance, high long-side-chain PAEs degradation efficiency and good environmental adaptability, and has a good application prospect.
Need to check novelty before this filing date? Find Prior Art