Response of soil microorganisms to radioactive oil waste : 1 results from a leaching experiment

نویسندگان

  • P. Galitskaya
  • L. Biktasheva
  • A. Saveliev
  • S. Ratering
  • S. Schnell
چکیده

13 Oil wastes produced in large amounts in the processes of oil extraction, refining, and 14 transportation are of great environmental concern because of their mutagenicity, toxicity, high 15 fire hazardousness, and hydrophobicity. About 40% of these wastes contain radionuclides; 16 however, the effects of oil products and radionuclides on soil microorganisms are frequently 17 studied separately. 18 The effects on various microbial parameters of raw waste containing 575 g of total petroleum 19 hydrocarbons (TPH) kg waste, 4.4 kBq kg of Ra, 2.8 kBq kg of Th, and 1.3 kBq kg of 20 K and its treated variant (1.6 g kg of TPH, 7.9 kBq kg of Ra, 3.9 kBq kg of Th, and 21 183 kBq kg of K) were examined in a leaching column experiment to separate the effects of 22 hydrocarbons from those of radioactive elements. The raw waste sample (H) was collected from 23 tanks during cleaning and maintenance, and a treated waste sample (R) was obtained from 24 equipment for oil waste treatment. Thermal steam treatment is used in the production yard to 25 reduce the oil content. 26

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تاریخ انتشار 2015