Ernso Fenelon1, Adnan Hussain2, Tsung-Han Yang2, Gen-Mu Chang3, Shyh-Wei Chen4, Ren-Jieh Wei2, Sheng-Jie You2, Ya-Fen Wang 2

Department of Civil Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan
Department of Environmental Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan
Environmental Protection Bureau,Chiayi City Government, Chiayi 60045, Taiwan
Environmental Protection Administration Executive Yuan, Taipei City 10042, Taiwan

Received: October 6, 2019
Revised: October 27, 2019
Accepted: November 9, 2019
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Cite this article:
Fenelon, E., Hussain, A., Yang, T.H., Chang, G.M., Chen, S.W., Wei, R.J., You, S.J. and Wang, Y.F. (2019). High Photocatalyst Module on Degradation of Extracted Gas from Soil under Visible Light. Aerosol Air Qual. Res. 19: 2865-2878.


  • The photocatalytic commercial module has a potential to treat the soil gas extraction.
  • The photocatalytic commercial module is very stable for long time of experiment.
  • The optimal environmental humidity of the whole module was 4 RH%.



Photocatalytic oxidation (PCO) is a promising technology for air purification due to low operating cost, potentially long service life, and low maintenance. In order to establish a high efficiency for removal of solid vapor extraction (SVE), in this study activated carbon was used for adsorption of SVE and lanthanum-doped titanium dioxide as a photocatalyst. The photocatalyst was coated on the glass fiber cloth and applied to the photocatalytic module and then performed for degradation of 15 ppm toluene. The adsorption module was used to eliminate the residual contaminants. The X-ray diffraction (XRD), Scanning electron microscopy (SEM) and the diffused reflectance spectroscopy (DRS), showed the synthesis of the catalyst were successfully prepared and the photocatalytic commercial module was designed by four photocatalytic glass fiber cloths under visible light. The adsorption module was designed by five layers of activated carbon each layer contained 30 g of activated carbon sets in the photocatalytic module. When the ambient humidity is less than 4 RH%, the removal efficiency was overtaken more than 95% within 1 hour. The experimental results depict that the photocatalytic commercial module is assembled with flow rate less than 3 liters per minute and the removal efficiency can be stable for more than 72 hours.

Keywords: Photocatalysis; Soil gas extraction; Titanium dioxide; Toluene; Visible light.

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