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Experimental Study on Influencing Factors of Soil Vapor Extraction in Toluene-Contaminated Sandy Soils

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Proceedings of the 8th International Congress on Environmental Geotechnics Volume 1 (ICEG 2018)

Part of the book series: Environmental Science and Engineering ((ENVENG))

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Abstract

Soil vapor extraction (SVE) has been one of the most widely used technologies for remediation of volatile organic compound contaminated sites. However, it is found that various environment factors may have quite different influence on the final remediation effect. In order to learn the influencing factors which affect the removal efficiency of toluene-contaminated sandy soils by SVE method, a series of one-dimensional SVE column tests were conducted. The factors such as grain size, air flow rate and water content were investigated separately. The results indicate that: (1) grain size has a great influence on toluene removal efficiency. The finer the sand is, the lower the removal rate will be; (2) increasing the vapor flow rate will lead to higher contaminant removal efficiency, but the increment of remediation efficiency was not significant at higher flow rate levels; (3) At low water content level, the increase of water content will lead to the decrease of contaminant removal efficiency.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 41672280, 41330641, 41272311).

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Authors and Affiliations

  1. Institute of Geotechnical Engineering, Southeast University, Nanjing, 210096, China

    Bai-Yang Mao, Zhi-bin Liu, Song-Yu Liu & Qi-Bing Wei

  2. Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Nanjing, 210096, China

    Bai-Yang Mao, Zhi-bin Liu, Song-Yu Liu & Qi-Bing Wei

  3. School of Transportation 825, Dongnandaxue Rd. 2, Jiangning District, 211189, Nanjing, China

    Zhi-bin Liu

Authors
  1. Bai-Yang Mao
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  2. Zhi-bin Liu
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  3. Song-Yu Liu
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  4. Qi-Bing Wei
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Corresponding author

Correspondence to Zhi-bin Liu .

Editor information

Editors and Affiliations

  1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China

    Liangtong Zhan

  2. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China

    Yunmin Chen

  3. Department of Civil Engineering, Monash University, Clayton, VIC, Australia

    Abdelmalek Bouazza

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Mao, BY., Liu, Zb., Liu, SY., Wei, QB. (2019). Experimental Study on Influencing Factors of Soil Vapor Extraction in Toluene-Contaminated Sandy Soils. In: Zhan, L., Chen, Y., Bouazza, A. (eds) Proceedings of the 8th International Congress on Environmental Geotechnics Volume 1. ICEG 2018. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-2221-1_100

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