STIMULATION OF DECOMPOSITION OF PETROLEUM IN CONTAMINATED SOIL WITH USING HYDROGEN PEROXIDE AND YARROWIA LIPOLYTICA A 101
 
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Samodzielna Katedra Biotechnologii i Biologii Molekularnej, Uniwersytet Opolski, ul. Kardynała Bolesława Kominka 6a/6, 45-032 Opole
CORRESPONDING AUTHOR
Łukasz Marek Kręcidło   

Univercity of Opole, plac Kopernika 11a, 45-040 Opole Opole, Polska
Publication date: 2016-09-09
 
Inż. Ekolog. 2016; 49:56–65
 
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ABSTRACT
The contamination of soil by petroleum substances pose a huge environmental problem because of negative impact on the physical and chemical properties and biological activity of soil. Contamination may also accumulate in plants, or together with dust, deposited on green parts of plants. Most of them are carcinogenic substances, so their removal from the environment requires the use of efficient, cheap and safe methods. The usefulness of bioaugmentation by Y. lipolytica A101 with stimulation by H2O2 for purification of hydrocarbon-contaminated soil was investigated under laboratory conditions. Paralelly, its influence on the dynamics of soil microflora has been tested. The use of combined techniques bioaugmentation and stimulation did not result in a significant reduction of the total content of petroleum compounds in contaminated soil. The tested method was most effective in case of degradation of PAHs; causing almost fourfold content decrease in their concentration (from 204 mg•kg-1 to 54 mg•kg-1). In the case of other hydrocarbons, there was no significant reduction in content. This was probably the result of their desorption from the soil complex. Bioremediation supported by Y. lipolytica A101 in combination with hydrogen peroxide stimulate the development of procaryotic microorganisms.