INFLUENCE FACTORS ON THERMAL DESORPTION OF PAHs FROM CONTAMINATED SOIL

Petroleum Processing and Petrochemicals ›› 2018, Vol. 49 ›› Issue (4): 89-93.

INFLUENCE FACTORS ON THERMAL DESORPTION OF PAHs FROM CONTAMINATED SOIL

Received:2017-10-19 Revised:2017-11-29 Online:2018-04-12 Published:2018-04-26
Contact: Lei Li E-mail:t-lilei.lpec@sinopec.com
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Abstract

Abstract: The effects of temperature, time and soil particle size on the thermal desorption efficiency of super-standard polycyclic aromatic hydrocarbons in contaminated soil were investigated. The reaction rate constant K was obtained by the first order kinetic fitting of pyrolysis desorption data for the soils with different particle sizes. Results showed that desorption efficiency is affected by the soil texture and that temperature and time of treatment are the key factors in remedial process. Smaller soil particle size, higher reaction temperature, and longer treatment time are beneficial to desorption of PAHs from soil. These results are of practical interest and may be used in designing desorption systems with low energy consumption.

Key words: PAHs, contaminated site, soil remediation, thermal desorption

CLC Number:

References

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