Chemical Safety Science, 2018, Volume 2, Issue 1, p. 103 — 115

 

Technologies for elimination of chemical hazards

 

UDC 66.094:66.098.2                                                                        Download PDF (Rus)

DOI: 10.25514/CHS.2018.1.12886

 

GEOTUBE DEHYDRATING TECHNOLOGY FOR PURIFICATION OF OIL-POLLUTED LIMNETIC BOTTOM SEDIMENTS

V. P. Murygina¹*, S. N. Gaydamaka¹, M. A. Gladchenko¹, A. A. Zubaidullin², and G. Raevskaya³

¹Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
²ZAO Siberian Scientific Research and Design Institute of Environmental Management, Nizhnevartovsk, Russia,
³Semenov Institute of Chemical Physics, Moscow, Russia

Received March 30, 2018

Published June 25, 2018

Abstract – A geotube dehydrating technology was used to purify limnetic bottom sediments from oil pollution for the first time in the Russian Federation in Western Siberia (Yugra, Khanty-Mansiysk Autonomous District) in 2013. Physicochemical and biological studies of purified soil samples from geotubes revealed decrease in the content of oil products by 80.6%-97.5%, aromatic hydrocarbons by 64.6%-2.5%, and tar-asphaltene fraction by 45.2%-77.1% as compared to the initial polluted samples. Soils from geotubes were found to be enriched in various kinds of microorganisms, including those capable of fixing nitrogen from the air. A 2-fold and 1.5-fold increase was found in concentrations of ammonium nitrogen and soluble phosphates, respectively. Phytotoxicity was not observed in the soils from geotubes, furthermore, a 3-6 fold increase of biological activity was also discovered as compared to the initial oil-polluted limnetic bottom sediments. Consequently, the geotube technology can be successfully applied for cleaning soils from oil pollution, as well as for reducing their phytotoxicity.

Keywords: bottom sediments, oil pollution, geotube technology, purification.