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Materials 2017, 10(3), 269;

Characterizing Adsorption Performance of Granular Activated Carbon with Permittivity

College of Electronic and Information Engineering, Sichuan University, Chengdu 610065, China
Author to whom correspondence should be addressed.
Academic Editors: Jonathan Phillips and Eric Guibal
Received: 29 November 2016 / Revised: 27 February 2017 / Accepted: 1 March 2017 / Published: 7 March 2017
(This article belongs to the Special Issue Sorption Materials for Environment Purification)
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A number of studies have achieved the consensus that microwave thermal technology can regenerate the granular activated carbon (GAC) more efficiently and energy-conservatively than other technologies. In particular, in the microwave heating industry, permittivity is a crucial parameter. This paper developed two equivalent models to establish the relationship between effective complex permittivity and pore volume of the GAC. It is generally based on Maxwell-Garnett approximation (MGA) theory. With two different assumptions in the model, two quantificational expressions were derived, respectively. Permittivity measurements and Brunauer–Emmett–Teller (BET) testing had been introduced in the experiments. Results confirmed the two expressions, which were extremely similar. Theoretical and experimental graphs were matched. This paper set up a bridge which links effective complex permittivity and pore volume of the GAC. Furthermore, it provides a potential and convenient method for the rapid assisted characterization of the GAC in its adsorption performance. View Full-Text
Keywords: permittivity; pore volume; granular activated carbon permittivity; pore volume; granular activated carbon

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Yang, Y.; Shi, C.; Zhang, Y.; Ye, J.; Zhu, H.; Huang, K. Characterizing Adsorption Performance of Granular Activated Carbon with Permittivity. Materials 2017, 10, 269.

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