Bioremediation of soil contaminated by dichlorodiphenyltrichloroethane with the use of aerobic strain Rhodococcus wratislaviensis Ch628
- Authors: Egorova D.O.1,2, Farafonova V.V.2, Shestakova E.A.1, Andreyev D.N.2, Maksimov A.S.2, Vasyanin A.N.2, Buzmakov S.A.2, Plotnikova E.G.1,2
-
Affiliations:
- Institute of Ecology and Genetics of Microorganisms
- Perm State National Research University
- Issue: Vol 50, No 10 (2017)
- Pages: 1217-1224
- Section: Degradation, Rehabilitation, and Conservation of Soils
- URL: https://journals.rcsi.science/1064-2293/article/view/224211
- DOI: https://doi.org/10.1134/S1064229317100015
- ID: 224211
Cite item
Abstract
The concentration of dichlorodiphenyltrichloroethane (DDT) was determined in a sandy soil of specially Protected Natural Area Osinskaya Lesnaya Dacha (Perm region) 45 years after the last application of the insecticide in this area. The concentration of DDT in the soil exceeded the maximum permissible concentration by 250 times and reached 25.05 mg/kg of soil. Under the conditions of model experiment, efficient decontamination of the soil was recorded in the system with the introduced strain Rhodococcus wratislaviensis Ch628; the DDT concentration decreased by 99.7% and equaled 0.07 mg/kg. The process of DDT degradation proceeded slower in the model soil system with autochthonous microbial complex. In this case, 58.2% DDT degraded in 70 days, and the final concentration was 10.47 mg/kg. The soil lost its toxicity for animal and plant test objects by the end of the experiment only in the model system containing the R. wratislaviensis Ch628 strain.
Keywords
About the authors
D. O. Egorova
Institute of Ecology and Genetics of Microorganisms; Perm State National Research University
Author for correspondence.
Email: daryao@rambler.ru
Russian Federation, ul. Goleva 13, Perm, 614081; ul. Bukireva 15, Perm, 614990
V. V. Farafonova
Perm State National Research University
Email: daryao@rambler.ru
Russian Federation, ul. Bukireva 15, Perm, 614990
E. A. Shestakova
Institute of Ecology and Genetics of Microorganisms
Email: daryao@rambler.ru
Russian Federation, ul. Goleva 13, Perm, 614081
D. N. Andreyev
Perm State National Research University
Email: daryao@rambler.ru
Russian Federation, ul. Bukireva 15, Perm, 614990
A. S. Maksimov
Perm State National Research University
Email: daryao@rambler.ru
Russian Federation, ul. Bukireva 15, Perm, 614990
A. N. Vasyanin
Perm State National Research University
Email: daryao@rambler.ru
Russian Federation, ul. Bukireva 15, Perm, 614990
S. A. Buzmakov
Perm State National Research University
Email: daryao@rambler.ru
Russian Federation, ul. Bukireva 15, Perm, 614990
E. G. Plotnikova
Institute of Ecology and Genetics of Microorganisms; Perm State National Research University
Email: daryao@rambler.ru
Russian Federation, ul. Goleva 13, Perm, 614081; ul. Bukireva 15, Perm, 614990