Biodegradation of Toluene Under Seasonal and Diurnal Fluctuations of Soil-Water Temperature.
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AbstractAn increasing interest in bioremediation of hydrocarbon polluted sites raises the question of the influence of seasonal and diurnal changes on soil-water temperature on biodegradation of BTEX, a widespread group of (sub)-surface contaminants. Therefore, we investigated the impact of a wide range of varying soil-water temperature on biodegradation of toluene under aerobic conditions. To see the seasonal impact of temperature, three sets of batch experiments were conducted at three different constant temperatures: 10°C, 21°C, and 30°C. These conditions were considered to represent (1) winter, (2) spring and/or autumn, and (3) summer seasons, respectively, at many polluted sites. Three additional sets of batch experiments were performed under fluctuating soil-water temperature cases (21<>10°C, 30<>21°C, and 10<>30°C) to mimic the day-night temperature patterns expected during the year. The batches were put at two different temperatures alternatively to represent the day (high-temperature) and night (low-temperature) times. The results of constant- and fluctuating-temperature experiments show that toluene degradation is strongly dependent on soil-water temperature level. An almost two-fold increase in toluene degradation time was observed for every 10°C decrease in temperature for constant-temperature cases. Under fluctuating-temperature conditions, toluene degraders were able to overcome the temperature stress and continued thriving during all considered weather scenarios. However, a slightly longer time was taken compared to the corresponding time at daily mean temperature conditions. The findings of this study are directly useful for bioremediation of hydrocarbon-polluted sites having significant diurnal and seasonal variations of soil-water temperature.
CitationYadav BK, Shrestha SR, Hassanizadeh SM (2012) Biodegradation of Toluene Under Seasonal and Diurnal Fluctuations of Soil-Water Temperature. Water Air Soil Pollut 223: 3579–3588. Available: http://dx.doi.org/10.1007/s11270-011-1052-x.
SponsorsWe would like to acknowledge the King Abdullah University of Science and Technology (KAUST) for extending the financial support to this research as part of the SOWACOR Project. The authors are also thankful to the Department of Science and Technology (DST), India, for extending the financial aid in the form of the Ramanujan research award.
JournalWater, Air, & Soil Pollution
PubMed Central IDPMC3409364
CollectionsPublications Acknowledging KAUST Support
- Temperature effects and substrate interactions during the aerobic biotransformation of BTEX mixtures by toluene-enriched consortia and Rhodococcus rhodochrous.
- Authors: Deeb RA, Alvarez-Cohen L
- Issue date: 1999 Mar 5
- Petroleum hydrocarbon biodegradation under seasonal freeze-thaw soil temperature regimes in contaminated soils from a sub-Arctic site.
- Authors: Chang W, Klemm S, Beaulieu C, Hawari J, Whyte L, Ghoshal S
- Issue date: 2011 Feb 1
- Bioremediation of BTEX hydrocarbons: effect of soil inoculation with the toluene-growing fungus Cladophialophora sp. strain T1.
- Authors: Prenafeta-Boldú FX, Ballerstedt H, Gerritse J, Grotenhuis JT
- Issue date: 2004 Feb
- Effects of different temperature regimens on the development of Aedes aegypti (L.) (Diptera: Culicidae) mosquitoes.
- Authors: Mohammed A, Chadee DD
- Issue date: 2011 Jul
- Survival of rapidly fluctuating natural low winter temperatures by High Arctic soil invertebrates.
- Authors: Convey P, Abbandonato H, Bergan F, Beumer LT, Biersma EM, Bråthen VS, D'Imperio L, Jensen CK, Nilsen S, Paquin K, Stenkewitz U, Svoen ME, Winkler J, Müller E, Coulson SJ
- Issue date: 2015 Dec