Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (10): 2493-2497.DOI: 10.16178/j.issn.0528-9017.20250060

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Application of biochar-based immobilization of deltamethrin-degrading bacteria

JIANG Hongying(), ZHANG Zhenwu, XING Chenghua()   

  1. College of Agriculture, Jinhua University of Vocational Technology, Jinhua 321017,Zhejiang
  • Received:2025-01-23 Online:2025-10-11 Published:2025-10-21

Abstract:

In view of the deltamethrin contamination in soil, the biocarbon produced by Photinia fraseri was used as the fixed material to prepare the immobilized deltamethrin-degrading bactericide from bacteria Aspergillus niger, and the preparation conditions were optimized. On this basis, the stability of the immobilized bactericide and the effect of degrading deltamethrin were evaluated. The results showed that when the concentration of biochar was 20 mg·mL-1, the inoculation amount of Aspergillus niger was 5%, the immobilization temperature was 30 ℃, and the immobilization time was 24 h, the degradation rate of deltamethrin by the immobilized bactericide was as high as 90.12%, and after the immobilized bactericide was stored at 4 ℃ and 25 ℃ for 28 days, the degradation rates could still be maintained at 77.46% and 69.72%. The results showed that the immobilized bactericide had good stability in degradation of deltamethrin,which provided a good bioremediation material for solving the degradation of deltamethrin in soil.

Key words: biochar, deltamethrin, Aspergillus niger, immobilization

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