To recultivate oil polluted soils there has been developed a method of their biotic purification using rhizomes of Carex hirta plants.
This is the project on biology, especially plant ecophysiology, which can be used for purification and reconstruction of oil polluted soils.
The existing methods of soil purification require high financial and technical expenses, are time consuming and do not secure full liquidation of oil pollution.
This is a cheap, environmentally safe method which considerably accelerates processes of degraded soils recovery and their secondary use.
Carex hirta plants are dug up from ecologically clean soils, packed into soak bags, and bed into prepared soil which previously is mechanically fluffed and watered. It may be done during a calendar year.
Application area: Recultivation of oil polluted soils
Advantages of the method
• Carex hirta plants are tolerant towards oil pollution, they survive and grow on territory with oil concentration of 98 g/kg.
• The experiments have shown that Carex hirta planted into oil polluted soil, with oil concentration of 48 g/kg decreases oil content by 7 % during already the first 2 month.
• Proposed method of soil recultivation allows to restore physical and chemical quality of soil (acidity, air and water balance, etc.) during a year.
• Rhizomes of Carex hirta plants help to renew soil microflora quantity (saprophytes, microscopic funguses and yeast, cellulose destructive, propionic, oligonitrophilic and nitrifying bacteria).
• Usage of this method will help to recover degraded soils in a short time and with minimal expenses.
Decision on the issue of declaration patent for the practical model “Method of purification of soils polluted by oil” from 10.02.2006 on application ¹U4200511816 from 12.12.2005.
Author of the project: Prof., Doctor of Science Olha Terek, Department of Plant Physiology and Ecology,
Ivan Franko National University of Lviv, Tel.:+38 032 2394283, E-mail:
biofr@franko.lviv.uaContact person:
Bogdan Kotur
Vice-rector for Scientific Research
Prof., Doctor of Science
Tel.: +38-032-2727040
Fax.: +38-032-2616903
E-mail:
ndch@franko.lviv.ua 
Ivan Franko National University of Lviv 
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