Dielectric spectroscopy of artificial faeces for smouldering applications

Bore, T., Yermán, L., Llano Serna, M., Wall, H., Torero, J. L. and Scheuermann, A. (2016). Dielectric spectroscopy of artificial faeces for smouldering applications. In: 2016 IEEE Sensors Applications Symposium (SAS). IEEE Sensors Applications Symposium, Catania, Italy, (522-527). 20-22 April 2016. doi:10.1109/SAS.2016.7479902

Author Bore, T.
Yermán, L.
Llano Serna, M.
Wall, H.
Torero, J. L.
Scheuermann, A.
Title of paper Dielectric spectroscopy of artificial faeces for smouldering applications
Conference name IEEE Sensors Applications Symposium
Conference location Catania, Italy
Conference dates 20-22 April 2016
Convener IEEE
Proceedings title 2016 IEEE Sensors Applications Symposium (SAS)
Journal name SAS 2016 - Sensors Applications Symposium, Proceedings
Place of Publication Piscataway, NJ, United States
Publisher IEEE
Publication Year 2016
Sub-type Fully published paper
DOI 10.1109/SAS.2016.7479902
Open Access Status Not Open Access
ISBN 9781479972500
Start page 522
End page 527
Total pages 6
Language eng
Formatted Abstract/Summary
Our objective is to develop an analysis concept in order to measure the in situ estimation of state parameter, such as water content, during smouldering of waste and sand mixtures. High frequency electromagnetic (HF EM) method presents a high potential for the quantitative estimation of state parameter in porous media. However, it provides indirect measurement: the major challenge is to derive robust relationship between the performed measured permittivity and the parameter under interest. Thus, laboratory measurement of dielectric properties of waste and sand mixtures under controlled boundary are urgently needed. In this preliminary study, the relative effective complex permittivity of artificial faeces was studied over the 50°MHz-3°GHz frequency range with network analyzer technique in combination with homemade open ended coaxial method. In a first step, the effect of water content on dielectric properties was investigated. The results have shown an important dispersion for the imaginary part which can be related to interface process and a systematic increase of the permittivity with water content. In a second step, a shrinking test was monitored with the homemade probe. The relative complex permittivity shows a nonlinear evolution with gravimetric water content and show marked transitions during the decrease of water content. The results of combined investigations have shown the potential of HF EM techniques for quantitative monitoring of the hydraulic state of waste and sand mixtures during smouldering combustion.
Keyword Dielectric spectroscopy
Open ended coaxial probe
Water content measurement
Smouldering combustion
Waste treatment
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Civil Engineering Publications
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Created: Sat, 25 Jun 2016, 01:07:09 EST by Marcelo Llano Serna on behalf of School of Civil Engineering