How the sorption of benzene in soils contaminated with aromatic hydrocarbons is affected by the presence of biofuels

Yıl 2015, , 111 - 117, 18.03.2015

Maria Manuela Carvalho Maria Cristina Vila Fernanda Rohden Mónica Rosas Joana Dias Teresa Oliva-teles Anthony Danko Cristina Delerue-matos António Fiuza

https://doi.org/10.18393/ejss.42200

Cited By: 1

Öz

The increasing use of biofuels as additives to gasoline may have potential indirect effects on the efficiency of soil remediation technologies used to remediate fuel spills.  This problem has not yet been studied. Sorption is one of the controlling processes in soil remediation. The effect of biofuels on sorption and phase distribution of contaminants by different natural soils has not been reported on the literature. The present work examines how two different biofuels, n-butanol and soybean biodiesel, affect benzene sorption in two naturally occurring subsoils (granite and limestone). Sorption isotherms were made with soils deliberately contaminated with benzene, benzene and n-butanol and benzene plus biodiesel, using lab-scale reactors operated at constant temperature, each one loaded with 700 grams of wet sterilized soil. For each type of soil, five isotherms were determined corresponding to different contamination profiles. It was concluded that sorption was strongly affected by the nature of the soil. The partition of benzene into the different phases of the soil was significantly affected by the presence of biofuels. The experimental data was fitted to conventional sorption models, Freundlich, Langmuir and a second order polynomial. Model parameters were determined using a non-linear least squares (NLLS) optimization algorithm and showed a good agreement between experimental and fitted data.

Anahtar Kelimeler

Sorption, soils, benzene, biofuels

Kaynakça

• Albergaria, J.T., Alvim-Ferraz, M.C., Delrue-Matos, C., 2010. Estimation of pollutant partition in sandy soils with different water contents. Environmental Monitoring and Assessment 171:171-180
• Albergaria, J.T., Alvim-Ferraz, M.C., Delrue-Matos, C., 2012. Remediation of sandy soils contaminated with hydrocarbons and halogenated hydrocarbons by soil vapour extraction. Journal of Environmental Management 104:195-201
• Cheng, H., Hu, E., Hu, Y., 2012. Impact of mineral micropores on transport and fate of organic contaminants: A review. Journal of Contaminant Hydrology 129-130:80-90
• Dias, J.M., Alvim-Ferraz, M.C.M., Almeida, M.F., 2008. Comparison of the performance of different homogeneous alkali catalysts during transesterification of waste and virgin oils and evaluation of biodiesel quality. Fuel 87:3572-3578.
• Indumathy, J., Cupples, A.M., 2013. Effect of isobutanol on toluene biodegradation in nitrate amended, sulfate amended and methanogenic enrichment microcosms. Biodegradation 24:657-663
• Kinniburgh, D.G., 1986. General purpose adsorption isotherms. Environmental Science and Technology 20(9): 895-904
• Mariano, A.P., Tomasella, R.C., Di Martino, C., Maciel Filho, R., Regali Seleghim, M.H., Contiero, J., de Angelis, D.D.F., 2009. Aerobic biodegradation of butanol and gasoline blends. Biomass Bioenergy 33(9):1175–1181
• Mariano, A.P., Tomasella, R.C., Di Martino, C., Morais, E.B., Maciel Filho, R., Regali Seleghim, M.H., Contiero, J., Tauk Tornisielo, S.M., de Angelis, D.D.F., 2010. Aerobic biodegradation of butanol and diesel oil blends. African Journal of Biotechnology 9(42):7094–7101
• Perry, R., Green, D., 1984. Perry’s Chemical Engineers’ Handbook (6th edition), McGraw-Hill.
• Schaefer, C.E., Yang, X., Pelz, D., Tsao, D.T., Streger, S.H., Steffan, R.J., 2010. Aerobic biodegradation of iso-butanol and ethanol and their relative effects on BTEX biodegradation in aquifer materials. Chemosphere 81: 1104-1110
• Ugwoha, E., Andresen, J.M., 2013. Impact of soil organic matter on the sorption and phase distribution of 20% butanol-blended gasoline in the vadose zone. International Journal of Water Resources and Environmental Engineering 5(9):506-514
• Weber, W.J., Digiano, F.A., 1996. Process dynamics in environmental systems. John Wiley & Sons inc., New York.