NDLI: Aerobic biodegradation of propylene glycol by soil bacteria

Content Provider	Springer Nature Link
Author	Tosca, Giuseppe Cavalca, Lucia Letizia Colarieti, M. Scelza, Rosalia Scotti, Riccardo Rao, Maria A. Andreoni, Vincenza Ciccazzo, Sonia Greco, Guido
Copyright Year	2012
Abstract	Propylene glycol (PG) is a main component of aircraft deicing fluids and its extensive use in Northern airports is a source of soil and groundwater contamination. Bacterial consortia able to grow on PG as sole carbon and energy source were selected from soil samples taken along the runways of Oslo Airport Gardermoen site (Norway). DGGE analysis of enrichment cultures showed that PG-degrading populations were mainly composed by Pseudomonas species, although Bacteroidetes were found, as well. Nineteen bacterial strains, able to grow on PG as sole carbon and energy source, were isolated and identified as different Pseudomonas species. Maximum specific growth rate of mixed cultures in the absence of nutrient limitation was 0.014 h−1 at 4 °C. Substrate C:N:P molar ratios calculated on the basis of measured growth yields are in good agreement with the suggested values for biostimulation reported in literature. Therefore, the addition of nutrients is suggested as a suitable technique to sustain PG aerobic degradation at the maximum rate by autochthonous microorganisms of unsaturated soil profile.
Starting Page	603
Ending Page	613
Page Count	11
File Format	PDF
ISSN	09239820
Journal	Biodegradation
Volume Number	24
Issue Number	5
e-ISSN	15729729
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-11-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aircraft deicing fluids Propylene glycol Soil bioremediation Biodegradation kinetics Pseudomonas Microbiology Soil Science & Conservation Geochemistry Terrestrial Pollution Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Waste Management/Waste Technology
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Environmental Engineering Bioengineering Microbiology

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