Remote laser burning of hydrocarbon pollution on the ground water surface
UDC: 504.4.054
DOI: 10.33285/2411-7013-2023-6(315)-11-16
Authors:
GVOZDEV SERGEY V.
1,
DUBROVSKY VLADIMIR YU.1,
ROMANOV ROMAN E.1,
KRASYUKOV ALEXANDER G.1,
METLYAEV DMITRY D.1,
SMIRNOV GENNADY V.1
1 State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, Troitsk, Russia
Keywords: laser, wet sand, hydrocarbons, ignition, radiation intensity, self-sustained combustion, beam scanning
Annotation:
The depth of oil penetration into sand with different moisture content at oil normal temperature and the temperature during its heating was determined. The threshold values of laser radiation intensity with a λ = 1.07 μm wavelength, which stably provide ignition and subsequent self-sustained combustion of hydrocarbons on the sand surface were experimentally determined. The obtained values were compared with those ones determined earlier for the ignition of hydrocarbons on water and ice surfaces. Laser afterburning (beam scanning) of the wet sand that remained on the surface after the self-sustained combustion of heavy oil fractions was carried out. By drying and subsequent weighing of sand with unburned oil fractions, the percentage of the burned oil in relation to its initial amount was determined. The percentage of the oil removed from the sand by the further microbiological purification was also determined. The experience gained in the course of the work and the developed method of soil surface laser cleaning from various hydrocarbons were taken into account when creating a laser complex designed, among other things, to eliminate emergency spills of oil products within the coastal waters and on shores.
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