Enhanced biodegradation of transformer oil in soils with cyclodextrin - From the laboratory to the field

Mónika Molnár, Laura Leitgib, Katalin Gruiz, Éva Fenyvesi, Nikoletta Szaniszló, József Szejtli, Fabio Fava

Research output: Contribution to journalArticle

51 Citations (Scopus)


The use cyclodextrins for the intensification of bioremediation by improving the mobility and bioavailability of contaminants has recently been studied. In this work, the role of randomly methylated β-cyclodextrin in the bioremediation of soils contaminated with transformer oil was studied both in bench scale bioreactors and through field experiments. The aims of this research were to (a) establish the scientific background of a cyclodextrin-based soil bioremediation technology, (b) demonstrate its feasibility and effectiveness in the field, and (c) develop an integrated methodology, consisting of a combination of physical, chemical, biological and ecotoxicological analytical methods, for efficiently monitoring the technology performances. The stepwise increasing scale of the experiments and the application of the integrated analytical methodology supported the development of a scientifically established new technology and the identification of the advantages and the limitations of its application in the field. At each phase of the study, randomly methylated β-cyclodextrin was found to significantly enhance the bioremediation and detoxification of the transformer oil-contaminated soils employed by increasing the bioavailability of the pollutants and the activity of indigenous microorganisms.

Original languageEnglish
Pages (from-to)159-168
Number of pages10
Issue number2
Publication statusPublished - Mar 1 2005



  • Bioavailability
  • Cyclodextrin
  • Ecotoxicology
  • Soil bioremediation
  • Transformer oil

ASJC Scopus subject areas

  • Environmental Engineering
  • Microbiology
  • Bioengineering
  • Environmental Chemistry
  • Pollution

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