Assessment of the Total Petroleum Hydrocarbons and Heavy Metal Concentrations in Soils around Car Washing Stations in Misurata, Libya

Document Type : Research Paper

Authors

1 Department of Chemistry, Faculty of Science, University of Misurata, Misurata, Libya

2 Centre for Astrobiology and Extremophile Research, School of Life Sciences, University of Bradford, Bradford

Abstract

Car washing generates a lot of wastewater which flows into our environment through a wastewater network or drains directly into the soil carrying with it contaminants. This study assessed the heavy metal and total petroleum hydrocarbon concentrations in wastewater from car washing stations and the surrounding soils in Misurata city, Libya. Pollution indices, such as the contamination factor (CF) and geoaccumulation index (Igeo), were used to assess the heavy metal and total petroleum hydrocarbon contamination status and ecological risk in the wastewater and soil from car washing stations. The results obtained in this study show that the average pH of the soil samples inside the stations ranged between 6.6 -8.53, while outside the stations the pH ranged from 5.97-8.63 and in sediments 6.8-8.44.
The results for the heavy metal contamination studied indicate that the average cadmium concentration in soil samples inside and outside the washing stations ranged from 0.013-0.018 ppm and 0.013-0.25 ppm, respectively, and the average cadmium concentration in sediment samples ranged between 0.05-0.23 ppm. Also, the concentration of lead in soil samples inside and outside the stations and in the sediments ranged from 0.21-0.85, 0.19-1.06 and 0.21- 1.06 ppm, respectively. The total petroleum hydrocarbon concentration levels obtained in this study were between 389-7000 mg/kg for the soil samples inside the stations, whereas in soil samples outside the stations the concentration ranged from 27000-55000 mg/kg. Some environmental indicators were used to determine the environmental status of the particular washing stations studied.

Keywords


[1] R. Zaneti, R. Etchepare, J. Rubio, J. Clean. Prod., 37,115 (2012)
[2] TA. Bursztynsky, R. Scofield, Environ. Sci. Eng., 252 (1982).
[3] WJ. Lau, A. F. Ismail, S. Firdaus, Sep. Purif. Technol., 104, 26 (2013).
[4] C. Brown, Water Effluent and Solid Waste Characteristics in the Professional Car Wash Industry: A Report for the International Carwash Association, (2002).
[5] D. Mazumber, S. Mukherjee, Int. J Environ. Sci. Dev., 2, 64 (2011).
[6] R. Mohamed, N. Kutty, A. Kassim, Aust. J. Basic. Appl. Sci., 8, 227 (2014).
[7] K. Randles, L. Mazur, C. Milanes, A Review of the Potential Human and Environmental Health Impacts of Synthetic Motor Oils a Review of the Potential Human and Environmental Health Impacts. Office of Environmental Health Hazard Assessment California Environmental Protection Agency,   California, (2007)
[8] M. Gryta, K. Karakulski, A. W. Morawskim, Water. Res., 35, 3665 (2001).
[9] Z. D Wang, M.Fingas,  D. Page, J. Chrom. A., 843, 369 (1999).
[10] I. S. Park, J. W. Park, J. Hazard. Mater., 185, 1374 (2011).
[11] T. B. Lynn, A. C. Lynn, D. Balog, In Proceedings of the 10th International On-Site 2002 Conference, January 22–25, (2002). San Diego, CA, USA.
[12] USEPA, “Method 3540C: Soxhlet Extraction,” Test Methods for evaluating Solid Waste: Physical Methods (SW846)3rd ed., Update IV, Office of Solid Waste and Emergency Response, Washington, D.C., December, (1996)
[13] R. Khlifi, A. Hamza-Chaffai, Toxicol. Appl. Pharmacol., 248,71 (2010).
[14] A. Adeniyi, J. Fashola, O. Ekanem, Niger. J. Rev. Sci., 1, 65 (1993).
[15] Manual-InfraCal-TOG-TPH Available online in: https://www.tttenviro.com/wp-content/uploads/Manual-InfraCal-TOG-TPH.pdf
[16] SR. Taylor, SM. McLennan, The Continental Crust: Its Composition and Evolution. Blackwell Scientific Publications, Oxford, (1985).
[17] G. Muller, Index of geoaccumulation in sediments of the Rhine River. J. Geol., 2,108 (1969).
[18] X. Lu, L. Wang, LY. Li, K. Lei, L. Huang, D. Kang, J. Hazard. Mater., 173,744 (2010).
[19] HH. Huu, S. Rudy, AV. Damme, Geol. Belgica., 13, 37 (2010).
[20] G. Muller, J. Geol., 2, 108 (1969).
[21] H. Marschner, Mineral nutrition of higher plants (2nd ed.). Academic Press, pp:889, New York, (1995).
[22] M. B. McBride, Environmental chemistry of soils. Oxford University Press, pp: 406, New York (1994).
[23] N.N. Tchernitchin, A, Villagra, A.N, Tchernitchin, Environ. Toxicol. Water. Qual., 13, 43 (1998).
[24] L. Martinez-Tabche, B.R. Mora, C.G. Faz, I.G. Castelan, M.M. Ortiz, V.U. Gonzalez, M.O. Flores, Environ. Toxicol. Water. Qual., 12, 211 (1997).
[25] J. Moores, P. Pattinson, C. Hyde, Enhancing the control of contaminants from New Zealand’ s roads : results of a road runoff sampling programme. New Zealand Transport Agency research report. Auckland, (2010)
[26] J. Oknich, The Perceived Environmental Impact of Car Washing. Ramsey-Washington Metro Watershed District, (2002).
[27] D.G. Todd, R.L. Chessin, J. Colman,Toxicological Profile for Total Petroleum Hydrocarbons (Tph). U.S. Department of Health and Human Services. Public Health Service Agency for Toxic Substances and Disease Registry, (1999).
[28] E.A. Mckenna, S.H. Youngren, S.R. Baker, Soil. Sediment. Contam., 4, 355 (1995).
[29] A. O’Sullivan, D. Smalley, J. Good, Quantifying the impact of car washing on water quality and assessing simple treatment strategies. Christchurch, New Zealand, (2011)
[30] Z. Jia, S.  Li, L. Wang, Scient. Repor., 8, 3256 (2018).