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ORIGINAL PAPER
Rhamnolipid-enhanced elution of organic compounds from the creosote-contaminated soil
1
Uniwersytet Przyrodniczy w Poznaniu, Instytut Technologii Żywności Pochodzenia Roślinnego, ul. Wojska Polskiego 31, 60-624 Poznań, Poland
2
Politechnika Poznańska, Wydział Technologii Chemicznej, ul. Berdychowo 4, 60-965 Poznań, Poland
3
Uniwersytet Przyrodniczy w Poznaniu, Katedra Biotechnologii i Mikrobiologii Żywności, ul. Wojska Polskiego 48, 60-627 Poznań, Poland
Journal of Research and Applications in Agricultural Engineering 2016;61(1):100-103
KEYWORDS
ABSTRACT
Rhamnolipids are a group of biosurfactants produced by microorganisms, which are considered to be an eco-friendly enhancing agents in bioremediation of the soils. Here, using creosote-contaminated soil, we investigate the effectiveness of rhamnolipids aqueous solutions (at different concentrations) on removal of polar and non-polar contaminants from the soil matrix. The obtained results show that rhamnolipids at higher concentrations could be more effective as extraction agents compared to the organic solvent - dichloromethane. The highest overall concentration of creosote components (212.3 g mL-1) was detected in aqueous solution of rhamnolipids at concentration equal to 10 CMC. This was achieved mainly because of the high efficiency of this variant to elute both polar (e.g. phenols) and non-polar (e.g. PAHs) compounds. Therefore, aqueous solution of rhamnolipids at concentration of 10 CMC may be recommended for the remediation of areas contaminated by numerous structurally different (i.e. polar and non-polar) chemical compounds, as in the case of the studied creosote-polluted soil.
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| eISSN: | 2719-423X |
| ISSN: | 1642-686X |
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