Far-Infrared Thermal Desorption of Sandy Soil and its Mechanism

Abstract:

A full-field investigation was conducted of far-infrared thermal desorption of sandy soil polluted by r-Hexachlorocyclohexane (RH). The effects of thermal desorption time, temperature, vacuum and water content on the thermal desorption efficiency (C_E) were determined. C_E of RH is increasing with the increasing of thermal desorption_{Subscript text} time, temperature, vacuum. The optimum thermal desorption conditions for sandy soil are as follows: thermal desorption time 10 minutes, thermal desorption temperature 200°C, vacuum 0.05MPa and water content 15%.The material balance was basically realized, and most RH lies in condensed liquid.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 2147-2150
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.2147
• Online since: May 2012
• Authors: Guo Long Gao, Jian Guo Jiang, Ye Xiao, Lian Bi Zhou
• Keywords: Far-Infrared Thermal Desorption, Mechanism, Process, Sandy Soil

References

[1] L.J. Pinto and M. M. Moore. Environ. Toxicol. Chem. Vol.19(2000), p.1741

[2] M.C. Chang, C. R. Huang and H.Y. Shu. Chemosphere, Vol. 8(2000),p.1295

[3] Z. Zheng and J.P. Obbard. J.Chem. Technol. Biotechnol.,Vol. 15(2000), p.1183

[4] Q. Wu and W.D. Marshall. J. Environ. Monit.,Vol. 3(2001),p.281