Browse > Article

A Study on Adsorption Characteristics of Benzene over Activated Carbons Coated with Insulating Materials and Desorption by Microwave Irradiation  

Kim, Ki-Joong (Department of Chemical Engineering, Sunchon National University)
Ahn, Ho-Geun (Department of Chemical Engineering, Sunchon National University)
Publication Information
Applied Chemistry for Engineering / v.19, no.4, 2008 , pp. 445-451 More about this Journal
Abstract
In order to regenerate the activated carbon polluted by volatile organic compounds (VOCs) using microwave, adsorption and desorption characteristics of benzene over activated carbon (AC) coated with insulating materials were investigated. Physical characteristics of activated carbon and insulator-coated ACs were investigated by means of $N_2$ gas adsorption and scanning electron microscopy (SEM). The amount of VOC adsorbed showed a positive relationship with the specific surface area of the ACs, and spark discharge over insulator-coated ACs did not occur. Potassium silicate (PS) was the best binder for coating of insulating materials on AC. Amount of benzene desorbed by microwave irradiation was dependent on output power of microwave. Nearly same performance was obtained even though the adsorption-desorption operation under microwave irradiation was repeated 5 times. Finally, it was known that the microwave heating was a very effective mean for regenerating the polluted AC.
Keywords
benzene; adsorption; desorption; insulator-coated activated carbon; microwave; regeneration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 3
연도 인용수 순위
1 C. L Chuang, P. C Chiang, and E. E. Chang, Chemosphere, 53, 17 (2003)   DOI   ScienceOn
2 P. S. Schmidt and J. R. Fair, Waste Management, 14, 3 (1994)   DOI   ScienceOn
3 W. Jin and S. Zhu, Chem. Eng. Technol., 23, 151 (2000)   DOI   ScienceOn
4 C. O. Ania, J. A. Menendez, J. B. Parra, and J. J. Pis, Carbon, 42, 1383 (2004)   DOI   ScienceOn
5 P. Di. and D. P. Y. Chang, Air & Waste Management Association, 89th Annual Conference and Exhibition, Nashville, Tennessee, USA, June 23-28, 96-RA106.02 (1996)
6 S.-W. Kang, S.-S. Suh, and B.-H. Min, J. Korean Ind. Eng. Chem., 17, 201 (2006)
7 K.-J. Kim, C.-S. Kang, Y.-J. You, M.-C. Chung, M.-W. Woo, W.-J Jeong, and H.-G. Ahn, Catal. Today, 111, 223 (2006)   DOI   ScienceOn
8 F. Delage, P. Pre, and P. l. Cloirec, J. Environ. Eng., 125, 1160 (1999)   DOI
9 小林悟, 烏.幸弘, 長野義信, 環境管理, 40, 31 (2004)
10 H.-S. Kim, Y.-S. Park, and B.-M. Min, J. of KSEE, 23, 1979 (2001)