Removal of Pollutants from High Polychlorinated Biphenyl Level Contaminated Soil at Different Thermal Treated Time

Abstract:

High contaminated level of polychlorinated biphenyl (PCBs) in soil could not be easily removed by routine method. Since thermal treatment technology becomes a promising method especially for removal of volatile organic compounds, it has not yet been widespread in China for some technical and economic reasons. Experiments were conducted in a horizontal quartz tube furnace with nitrogen as the unique carrier gas, and heating temperature was set at 500oC with retention time of flue gas desorbed from soil was about 1 min. It has been found that total removal efficiency of PCBs from soil increased with the heating time was prolonged. Thermal treated time of 60 min seems suitable for the removal of PCBs, with the removal efficiency of 95.8% in solid phase. It has also been concluded that the removal mechanism of PCBs from soil endures dechlorination and destruction reactions with anticipation of catalytic metals. Normal gaseous pollutants desorbed from soil were also studied, H₂O evaporation was favored with at the beginning of thermal process; after H₂O evaporation, the organic matters began to decompose; when the thermal treated time was longer than 20 min, the desorption of the normal gaseous pollutants were almost finished (except for NH₃).

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 1034-1041
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.1034
• Online since: October 2011
• Authors: Hai Long Wu, Sheng Yong Lu, Xiao Dong Li, Jian Hua Yan
• Keywords: Dechlorination, Desorption, Polychlorinated Biphenyl, Removal Efficiency, Thermal Treatment

References

[1] R.D. Kimbrough. Critical Reviews in Toxicology Vol. 25 (1995), pp.133-163

[2] V.S. Magr. Journal of Environmental Engineering-Asce Vol. 129 (2003), pp.961-965

[3] P.J. Morris, W.W. Mohn, J.F. Quensen 3rd, J.M. Tiedje and S.A. Boyd. Applied and Environmental Microbiology Vol. 58 (1992), pp.3088-3094

DOI: 10.1128/aem.58.9.3088-3094.1992

[4] J. Seok, J. Seok and K.Y. Hwang. Journal of Hazardous Materials Vol. 124 (2005), pp.133-138

[5] X.L. Du. Energy Conservation and Environmental Protection Vol. 6 (2003), pp.39-41 (in Chinese)

[6] G. Yu, J.F. Niu and J. Huang: Persistent organic compounds problem and strategy in china. Persistent organic compounds—new global environmental problem (Science publishing company, Beijing, China 2005) (in Chinese)

[7] X.H. Bi, S.G. Chu, Q.Y. Meng and X.B. Xu. Agriculture, Ecosystems and Environment Vol. 89 (2002), pp.241-252

[8] Y. Zhao, Y.M. Shen, and X.Y. Ma. Electrical environment protection Vol. 25 (2009), pp.57-59 (in Chinese)

[9] I.E.T. Iben, W.A. Edelstein, R.B. Sheldon, A.P. Shapiro, E.E. Uzgiris, C.R. Scatena, S.R. Blaha, W.B. Silverstein, G.R. Brown, G.L. Stegemeier and H.J. Vinegar. Environmental Science and Technology Vol. 30 (1996), pp.3144-3154

DOI: 10.1021/es9506622

[10] M.T. Smith, F. Berruti and A.K. Mehrotra. Industrial and Engineering Chemistry Research Vol. 40 (2001), pp.5421-5430

[11] M.T. mith. MS Thesis, The University of Calgary, Calgary, Alberta (1997)

[12] Information on http://www.syrres.com/esc/physdemo.htm

[13] E.E. Uzgiris, W.A. Edelstein, H.R. Philipp and I.E.T. Iben. Chemosphere Vol. 30 (1995), pp.377-387

DOI: 10.1016/0045-6535(94)00404-i

[14] T. Chen, X.D .Li, J.H. Yan and Y.Q. Jin. Journal of Hazardous Materials Vol. 172 (2009), pp.1339-1343

[15] P. Varanasi, A. Fullana and S. Sidhu. Chemosphere Vol. 66 (2007), pp.1031-1038

[16] V. Risoul, V. Renauld, G. Trouve and P. Gilot. Waste Management Vol. 22 (2002), pp.61-72

[17] N. Aristov and A. Habekost. Chemosphere Vol. 80 (2010), pp.113-115

[18] H. Hagenmaier, H. Brunner, R. Haag and M. Kraft. Environmental Science & Technology Vol. 21 (1987), pp.1085-1088

[19] H. Ballerstedt, A. Kraus and U. Lechner. Environmental Science & Technology Vol. 31 (1997), pp.1749-1753

[20] T. Fujimori, M. Takaoka and N. Takeda. Environmental Science & Technology Vol. 43 (2009) , pp.8053-8059

[21] T. Sato, T. Todoroki, K. Shimoda, A. Terada and M. Hosomi. Chemosphere Vol. 80 (2010), pp.184-189.

[22] Z.M. Xie, W.H. Wu and J.M. Xu. Advances in Environmental Science Vol. 7 (1999), pp.40-53 (in Chinese)

[23] E. Johansson, P. Sandén and G. Öberg. Chemosphere Vol. 52 (2003), pp.391-397