Determination of Activated Carbon Residual Life using a Microwave Cavity Resonator

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Mason, A ; Wylie, S ; Shaw, A ; Al-Shamma'a, A ; Thomas, A ; Keele, H

This paper presents the continuation of work conducted jointly between Dstl and LJMU. This unique body of work has been, largely, concerned with detecting the residual life of high performance filter materials using electromagnetic (EM) waves within a resonant cavity. Past work has considered both HEPA [1] and ASZM-TEDA[2] activated carbon filter materials. This paper continues the later work, considering the response of ASZM-TEDA activated carbon through the co-ageing of two distinct batches of the material. The paper briefly introduces activated carbon, discusses theory relevant to the work and the methodology used for investigation. A comprehensive set of results is included which seek to validate this technique for determining the residual lifespan of activated carbon.
  • References (10)

    [1] A. Mason, et al., "HEPA Filter Material Load Detection Using a Microwave Cavity Sensor," International Journal on Smart Sensing and Intelligent Systems, vol. 3, pp. 322-337, 2010.

    [2] A. Mason, et al., "Electromagnetic (EM) Cavity Resonance Residual Life Indicator," presented at the 2011 IEEE Symposium on Computers & Informatics, Kuala Lumpur, Malaysia, 2011.

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    [8] D. M. Pozar, Microwave Engineering, 3rd ed. New York: John Wiley and Sons, 2005.

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    [10] F. Ulaby, "Plane Wave Propagation in Lossy Media," in Fundamentals of Applied Electromagnetics, ed: Prentice Hall, 1999, pp. 277-279.

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