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As a result of a screening study on the biodegradative activity of strains from the working collection of the laboratory of microbiology of technogenic ecosystems, it was established that the strains Achromobacter sp. Osa 3, Achromobacter sp. Osa 7, Achromobacter sp. Osa 25, Bacillus sp. D3-2, Brevibacterium sp. CA, Leucobacter sp. BB, Pseudomonas sp. Osa 28, Rhodococcus sp. Osa 8, and Rhodococcus sp. Osa 11 degrade 2,4,2′-trichlorobiphenyl and 2,4,4′-trichlorobiphenyl with an efficiency of 38.4–98.3% over 5 days. The specific degradation rate varied from 0.027 to 0.584 day−1. During cultivation under conditions where trichlorobiphenyl was the sole carbon source, the strains demonstrated negligible growth. The applied mathematical methods allowed for the mathematical description of the dynamics of degradation of 2,4,2′-CB and 2,4,4′-CB for the strains Bacillus sp. D3-2, Rhodococcus sp. Osa 8, and Rhodococcus sp. Osa 11, as well as growth dynamics for all cultures. The results obtained recommend the investigated strains as a basis for developing nature-like technologies for the elimination of hazardous environmental pollutants—chlorinated biphenyls.

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Bacterial Degraders as the Basis for Nature-Like Technology for the Processing of Trichlorinated Biphenyls (Persistent Organic Pollutants)

  • 会议论文

  • 发表日期：

    2026年

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  • N. A. Korolev,
  • T. D. Kir’yanova,
  • D. O. Egorova

摘要

As a result of a screening study on the biodegradative activity of strains from the working collection of the laboratory of microbiology of technogenic ecosystems, it was established that the strains Achromobacter sp. Osa 3, Achromobacter sp. Osa 7, Achromobacter sp. Osa 25, Bacillus sp. D3-2, Brevibacterium sp. CA, Leucobacter sp. BB, Pseudomonas sp. Osa 28, Rhodococcus sp. Osa 8, and Rhodococcus sp. Osa 11 degrade 2,4,2′-trichlorobiphenyl and 2,4,4′-trichlorobiphenyl with an efficiency of 38.4–98.3% over 5 days. The specific degradation rate varied from 0.027 to 0.584 day−1. During cultivation under conditions where trichlorobiphenyl was the sole carbon source, the strains demonstrated negligible growth. The applied mathematical methods allowed for the mathematical description of the dynamics of degradation of 2,4,2′-CB and 2,4,4′-CB for the strains Bacillus sp. D3-2, Rhodococcus sp. Osa 8, and Rhodococcus sp. Osa 11, as well as growth dynamics for all cultures. The results obtained recommend the investigated strains as a basis for developing nature-like technologies for the elimination of hazardous environmental pollutants—chlorinated biphenyls.