Fluorinated waste and firefighting activities: biodegradation of hydrocarbons from petrochemical refinery soil co-contaminated with halogenated foams
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Perfluorinated compounds, including fluorotelomers, are important constituents of firefighting foams to extinguish fuel fires in the petrochemical industry, airports, and at fire-training sites. In this study, we monitored the biodegradation process in a co-contamination scenario with monoaromatic hydrocarbons commonly found in fuels (benzene, toluene) and fluorotelomers. The CO2 production rates were evaluated by a factorial design taking into account the effect of seasonality at in situ natural attenuation processes. Headspace analysis by gas chromatography with a thermal conductivity detector (GC-TCD) was applied to detect CO2 production, whereas monoaromatics were analyzed by gas chromatography coupled to mass spectrometry (GC–MS). According to our results, seasonality had a detectable effect during summer, yielding different CO2 production rates. Higher temperatures increased CO2 production rate, while higher concentrations of fluorotelomer inhibited the biodegradation process. On average, benzene and toluene were depleted 17.5 days earlier in control assays without fluorotelomers. Toluene removal efficiency was also notably higher than benzene. The noticeable decrease in degradation rates of monoaromatics was caused by perfluorinated compounds that are possibly linked to metabolic inhibition mechanisms. Fluorotelomer diminished catabolism in all of our batch cultures. In addition to this, an alternative production of by-products could be detected. Thus, we propose that transient components of the benzene and toluene degradation may be differentially formed, causing the benzene, toluene, and perfluorinated co-contaminations to go through switched metabolic stages under the presence of fluoride in a contamination scenario.
KeywordsPerfluorinated compounds Fluorotelomer Bioremediation Chromatography Halogenated waste Bioremediation Benzene Toluene
Our research group acknowledges CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior), CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico), FUNDUNESP (Fundação para o Desenvolvimento da UNESP), PRH-ANP/MCT (Programa de Formação de Recursos Humanos em Geologia do Petróleo e Ciências Ambientais Aplicadas ao Setor de Petróleo e Gás), and UNESP (Universidade Estadual Paulista “Julio de Mesquita Filho”) for the financial support.
- Cholakov GS (2016) Air quality and the petroleum industry. In: de la Guardia M, Armenta S (eds) Comprehensive analytical chemistry, 73rd edn. Elsevier, New York, pp 563–587Google Scholar
- Donaldson D (2016) New foam improves firefighting capabilities. Mater Today 19:63Google Scholar
- Kapellos GE (2017) Microbial strategies for oil biodegradation. In: Becker SM (ed) Modeling of microscale transport in biological processes. Academic Press, New York, pp 19–39Google Scholar
- Mathur AK, Majumder CB (2010) Kinetics modelling of the biodegradation of benzene, toluene and phenol as single substrate and mixed substrate by using Pseudomonas putida. Chem Biochem Eng Q 24:101–109Google Scholar
- Montagnolli RN, Lopes PRM, Bidoia ED (2014) Screening the toxicity and biodegradability of petroleum hydrocarbons by a rapid colorimetric method. Arch Environ Contam Toxicol 12:1–12Google Scholar
- NFPA - National Fire Protection Association (1991) Fire protection handbook, 17th edn. NFPA, QuincyGoogle Scholar
- Nolan DP (2011) Historical survey of fire and explosions in the hydrocarbon industries. In: Nolan DP (ed) Handbook of fire and explosion protection engineering principles, 2nd edn. William Andrew Publishing, Oxford, pp 71–82Google Scholar
- Postigo C, Martinez DE, Grondona S, Miglioranza KSB (2017) Groundwater pollution: sources, mechanisms, and prevention. In: Elias SA (ed) Reference module in earth systems and environmental sciences. Elsevier, New York, pp 143–162Google Scholar
- Yeom SH, Yoo YJ, Lee JW (1997) The importance of microbial adaptation in the degradation of BTX—studies in environmental science, 1st edn. Elsevier, New YorkGoogle Scholar