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International Biodeterioration & Biodegradation
Vol. 114, 2016, Pages: 150–156

Method of aerobic-anaerobic bioremediation of a raised bog in Western Siberia affected by old oil pollution. A pilot test

Valentina Murygina, Sergey Gaydamaka, Marina Gladchenko, Azat Zubaydullin

Dept. of Chemical Enzymology, Chemistry Faculty, Lomonosov Moscow State University, Leninskye Gory 1, Bldg. 11B, Moscow, 119992, Russia.

Abstract

The aerobic-anaerobic method of bioremediation was used in Western Siberia on an extreme site of a raised bog polluted with oil 20 years ago. The area was covered with an asphalt crust that can withstand a weight up to 60 kg without being destroyed. The crust was up to 1.5 cm thick; the underlying heavily oil-polluted moss was 15–25 cm. This area was divided into three plots (25 × 30 m2). The concentration of total petroleum hydrocarbons (TPH) was 446.7–526.8 g/kg DM. The oil-oxidizing preparation Rhoder and a fertilizer were applied three times to the surface of the first plot by sprinkling; the electron acceptor was introduced into the moss together with the Rhoder under pressure to 15 cm. On the second plot indigenous microorganisms were activated with a fertilizer three times. The third plot was used as a negative control. As a result TPH concentration decreased by 23.0% in the layer of 0–10 cm and by 72.6% in the layer of 10–25 cm on the first plot. On the second plot (the activation of indigenous microflora) the TPH decreased by 28.7% only in the layer of 10–25 cm. The HC concentration in the control plot did not decrease at all.

Keywords: Bog; Oil; Asphalt-like crust; Bioremediation; Microorganisms; Acceptor of electrons.

 
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