Box Experiment Study of Thermally Enhanced SVE for Benzene

Zhang, Qixiang; Feng, Qiyan; Zhu, Xueqiang; Zhang, Mei; Wang, Yanjun; Yang, Liu

doi:10.3390/ijerph18084062

Open AccessArticle

Box Experiment Study of Thermally Enhanced SVE for Benzene

by

Qixiang Zhang

¹

,

Qiyan Feng

^1,*,

Xueqiang Zhu

¹

,

Mei Zhang

²,

Yanjun Wang

² and

Liu Yang

²

¹

School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China

²

Jiangsu Design Institute for Mineral Resources, Xuzhou 221000, China

^*

Author to whom correspondence should be addressed.

Int. J. Environ. Res. Public Health 2021, 18(8), 4062; https://doi.org/10.3390/ijerph18084062

Submission received: 28 February 2021 / Revised: 6 April 2021 / Accepted: 8 April 2021 / Published: 12 April 2021

(This article belongs to the Special Issue Soil and Groundwater: Pollution and In-situ Remediation)

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Abstract

In order to describe the changes of soil temperature field, air flow field and remediation situation with time during the process of thermally enhanced SVE (soil vapor extraction), a remediation experiment of benzene contaminated soil with single extraction pipe was carried out in a box device. The results showed that the whole temperature of the system was raised to 80 °C in 4 h. 43% of benzene were removed in the first 2% of the extraction time. After 24 h, the repair efficiency was close to 100%. The device can efficiently remove benzene from soil. By continuously monitoring the parameters in the operation process of the system, the spatial distribution of temperature and soil gas pollutant concentration with time was plotted. It showed the benzene concentration distribution in the soil gas was more consistent with the temperature distribution before the start of ventilation, and the concentration of benzene in the soil gas dropped rapidly after ventilation, while the temperature distribution was almost unaffected. In the treatment of soil with a benzene content of 17.8 mg∙kg⁻¹, when the soil gas benzene concentration is the highest at 180 min, the peak value is 11,200 mg∙m⁻³, and the average concentration is 7629.4 mg∙m⁻³.

Keywords: soil vapor extraction; benzene; thermal enhancement; soil gas

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MDPI and ACS Style

Zhang, Q.; Feng, Q.; Zhu, X.; Zhang, M.; Wang, Y.; Yang, L. Box Experiment Study of Thermally Enhanced SVE for Benzene. Int. J. Environ. Res. Public Health 2021, 18, 4062. https://doi.org/10.3390/ijerph18084062

AMA Style

Zhang Q, Feng Q, Zhu X, Zhang M, Wang Y, Yang L. Box Experiment Study of Thermally Enhanced SVE for Benzene. International Journal of Environmental Research and Public Health. 2021; 18(8):4062. https://doi.org/10.3390/ijerph18084062

Chicago/Turabian Style

Zhang, Qixiang, Qiyan Feng, Xueqiang Zhu, Mei Zhang, Yanjun Wang, and Liu Yang. 2021. "Box Experiment Study of Thermally Enhanced SVE for Benzene" International Journal of Environmental Research and Public Health 18, no. 8: 4062. https://doi.org/10.3390/ijerph18084062

APA Style

Zhang, Q., Feng, Q., Zhu, X., Zhang, M., Wang, Y., & Yang, L. (2021). Box Experiment Study of Thermally Enhanced SVE for Benzene. International Journal of Environmental Research and Public Health, 18(8), 4062. https://doi.org/10.3390/ijerph18084062

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Box Experiment Study of Thermally Enhanced SVE for Benzene

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