تأثیر روش‌های حرارتی و شستشو در پاکسازی یک خاک رسی آلوده به گازوئیل

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه تهران

2 پردیس کشاورزی و منابع طبیعی دانشگاه تهران

3 دانشکده کشاورزی و منابع طبیعی دانشگاه تهران

چکیده

در این پژوهش اثر حرارت و استفاده از دو نوع شوینده در پاکسازی یک خاک رسی آلوده شده به گازوئیل مورد بررسی قرار گرفت. یک خاک رسی طبیعی به صورت مصنوعی با درصدهای گوناگون گازوئیل (5% و 10%) آلوده گردید. سپس نمونه خاک آلوده شده در معرض حرارت‌های 50، 100 و 150 درجه سانتی‌گراد مورد پاکسازی قرارگرفت. علاوه بر آن پاکسازی به وسیله شوینده‌های Tween 80 و SDS هم‌ صورت پذیرفت. آزمایش‌های فیزیکی و مکانیکی شامل حدود اتربرگ، دانه‌بندی، تراکم و مقاومت تک محوری روی نمونه‌هایی از خاک طبیعی آلوده شده و خاک پاکسازی شده، از دو روش پیش گفته انجام گردید. نتایج نشان داد که افزودن گازوئیل موجب تغییراتی در اندازه ذرات، حدود اتربرگ، تراکم و مقاومت خاک می‌گردد که این تغییرات تابعی از درصد گازوئیل است. علاوه بر این نتایج نشان داد که هر دو روش حرارتی و استفاده از شوینده در پاکسازی خاک به ویژه خاک حاوی 5% گازوئیل مؤثر می‌باشد لیکن عملکرد شوینده‌ها در پاکسازی خاک مؤثرتر است. با افزایش درصد آلاینده از 5% به 10% عملکرد هر دو روش به ویژه مواد شوینده کاهش می‌یابد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of thermal and washing methods on remediation of a clay soil contaminated with gasoline

نویسندگان [English]

  • Mahmoud Babalar 1
  • Ali Raeesi Estabragh 2
  • Jamal Abdolahi Alibaik 3
  • gholam ali Vakili 3
1 University of Tehran
2 Tehran university of agriculture and natural resources
3 Tehran university of agriculture and natural resources
چکیده [English]

In this work, remediation of a contaminated clay soil with gasoline was studied through experimental tests by thermal and washing methods. A natural clay soil was contaminated artificially by different percent of (5% and 10%) gasoline. The contaminated soil was remitted at different temperatures (50, 100 and 1500 C). In addition, washing method was conducted on contaminated samples by using two kinds of surfactants (SDS and Tween 80). Experimental tests were including gradation, Atterberg limits, compaction and uniaxial compression tests which were performed on samples of natural, contaminated and remediation soil. Experimental results showed that adding gasoline to natural soil cause changes in physical and mechanical properties of soil and these changes are functions of gasoline percent. The results also showed that both thermal and washing techniques are effective in remediation of soil particularly for soil contaminated with 5% gasoline but the effect of them, and particularly surfactants, is reduced by increasing the percent of gasoline.

کلیدواژه‌ها [English]

  • Gasoline
  • Clay Soil
  • remediation
  • Thermal
  • washing

مراجع

Chu, W., and Kwan, C.Y. (2003), Remediation of Contaminated soil by a Solvent/Surfactant System. Chemosphere. 53, 9-15.
Eliss, W.D., Payne, J.R., Tatuni, A.N. and Freestone, F.J. (1984). The Development of Chemical Countermeasures for Hazardous Waste Contaminated soil. Preceding of the hazardous materials spills conference. pp.116-125.
EPA (1988). Must for USTs, A summary of the New Regulations for the Underground Storage Tank System. EPA, 530, UST-88,008. Office of underground storage tanks, U.S environmental protection agency, Washington, DC.
EPA (1985). Remedial Action at Waste Disposal Site. EPA-625, 6-85,006, Office of Research and Development, Handbook, EPA Hazardous Waste Engineering Research Laboratory, Cincinnati, OH.
Estabragh, A.R, Beytolahpour, I., Moradi, M.and Javadi, A.A. (2014). Consolidation Behavior of Two Fine-Grained Soils Contaminated by Glycerol and Ethanol. Engineering Geology. 178. 102-108.
Fang, M.Y. (1997). Introduction to Environmental Geotechnology, CRC press, FL.USA.
Fent, K., (2003). Ecotoxicological Problems Associated with Contaminated Sites. Toxicol. Lett. 140 (141), 353-365.
Golshan,M., Naseri, S.,Farzadkia, M., Esrafili, A.,Rezaei Kalantari, R. and Karimi Takanlu, L,. (2014) Performance Assessment of rhamnolipid MR01biosurfactant and Triton X-100 Chemical Surfactant in Removalof Phenanthrene from soil. Iranian Journal of Health and Environment. 7.(2), 143-156 .
Khosravi, E., Ghasemzadeh, H., Sabour, M.R.and Yazdani, H. (2013). Geotechnical Properties of Gas Oil-Contaminated Kaolinite. Engineering Geology. 166, 11-16.
Kiem, R., Knicker, H., Ligouis, B.and Kogel-knabner, I., (2003). Airborne Contaminants in the Refractory Organic Carbon Fraction of Arable Soils in Highly Industrialized Areas. Geoderma. 114, 109-137.
Meegoda, N.J. and Ratnaweera, P., (1995). Treatment of Oil Contaminated Soils for Identification and Classification. Geotechnical Testing Journal. 18, 41-49.
Mehrasebi, M., Baziar, M., Naddafi, K.,Mohammadian Fazli, M., and Assadi. A., (2013). Efficiency of Brij35 and Tween 80 Surfactants for Treatment of Gasoline Contaminated Soil. Iranian Journal of Health and Environment. 6(2), 211-220. 
Moore, C.A.and Mitchell, J.K.(1974). Electromagnetic Forces and Soil Strength. Geotechnique. 24.(4), 627-640.
Mulligan, C.N., Yong, R.N.and Gibbs, B.F. (2001). Surfactant-Enhanced Remediation of Contaminated Soil: Review. Engineering Geology, 60,.371-380.
Pincus, H.J., Meegoda, N.J., and Ratnaweera, P.(1995). Treatment of Oil Contaminated Soil for Identification and Classification. Geotechnical Testing Journal. 1.18 (1), 41-49.
Ratnaweera, P.and Meegoda, J.N, (2005). Shear Strength and Stress-Strain Behaivior of Contaminated soil. Geotechnical Testing Journal. 22 (2), 1-8.
Schwarzenbach, A.R., Gschwend, P.M.and Imboden, D.M.(2003). Environmental Organic Chemistry. Second ed. J. Wiley and sons, New York.
Seyed Razavi., S.N., Khodadadi, A. and  GanjiDoust., H.(2011).Treatment of Soil Contaminated with Crude-Oil using Biosurfactants. Journal of Environmental Studies. 37 (60), 107-116.
Singh, S.K., Srivastava, R.K. and Siby, J.(2009). Studies on Soil Contamination due to Used Motor Oil and its Remediation. Canadian Geotechnical Journal, 46, 1077-1083.
Sridharan, A.and Rao, G.(1979).Shear Strength of Saturated Clays and the Role of the Effective Stress Concept. Géotechnique. 2,177-193.
Wang, M.C., Benway, J.M., and Aray ssi, A.M. (1990). The Effect of Heating on Engineering Properties of Clays. Physico-Chemical Aspects of Soil and Related Materials. ASTM STP 1095, (139-158).
 
 
تحقیقات آب و خاک ایران
دوره 47، شماره 2
مرداد 1395
صفحه 417-425

فایل ها

هم رسانی

ارجاع به این مقاله

آمار