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Geotechnical Engineering and Engineering Geology

A combined method for remediation of contaminated areas of the oil complex based on electrochemical treatment with the creation of a geochemical barrier

Authors:
Nikolai S. Shulaev1
Valeria V. Pryanichnikova2
Ramil R. Kadyrov3
About authors
  • 1 — Ph.D., Dr.Sci. Professor Ufa State Petroleum Technological University ▪ Orcid
  • 2 — Ph.D. Associate Professor Ufa State Petroleum Technological University ▪ Orcid
  • 3 — Ph.D. Associate Professor Ufa State Petroleum Technological University ▪ Orcid
Date submitted:
2025-06-30
Date accepted:
2026-04-28
Online publication date:
2026-06-22

Abstract

The scale of the environmental problem associated with the pollution of vast areas of industrial zones in the oil industry is significant and requires the use of new technological approaches in solving it. A developing technology in this field is the use of electrochemical remediation, i.e., the removal of petroleum products and associated aqueous contaminant solutions from environments using low-voltage electric currents. The advantage of this method is the purification of both the surface fertile soil and the deeper soil layers. A current trend in the deve-lopment of electrochemical remediation methods is their integration with other remediation technologies, which increases remediation efficiency through oxidation or pollutant extraction, as well as significantly reduces the time required for remediation. This work is devoted to combining the treatment of oil-contaminated soils with direct electric current with the adding of the oxidizing component, calcium peroxide. The creation of a reactive geochemical barrier made of calcium peroxide in the interelectrode zone is proposed. This barrier will act as an inductor of oxidative reactions that promote the gradual mineralization of petroleum hydrocarbons. The formation of a directed contaminated electrophoretic flow moving from the anode to the cathode through a layer of calcium peroxide is simulated under laboratory conditions, and the characteristics of the purification process are investigated. The dynamics of such important environmental parameters as voltage, acidity of the treated medium, volume of the generated electrophoretic flow and the content of petroleum products in the solid (soil) and liquid (water) phases after cleaning are studied.

Область исследования:
Geotechnical Engineering and Engineering Geology
Keywords:
geochemical barrier electrochemical cleaning calcium peroxide oil-contaminated soil diesel fuel groundwater cleaning efficiency
Funding:

None

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