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DOI: https://doi.org/10.4491/eer.2018.336
Removal of volatile organic compounds from air using activated carbon impregnated cellulose acetate electrospun mats
Kashyap Patil1, Seonju Jeong2, Hankwon Lim2, Hun-Soo Byun3, and Sangil Han1
1Department of Chemical Engineering, Changwon National University, Changwon 51140, Republic of Korea
2Department of Advanced Materials and Chemical Engineering, Catholic University of Daegu, Gyeongsan 38430, Republic of Korea
3Department of Chemical and Biomolecular Engineering, Chonnam National University, Yeosu 59626, Republic of Korea
Corresponding Author: Sangil Han ,Tel: +82-55-213-3757, Fax: +82-55-213-3759, Email: shan@changwon.ac.kr
Received: September 20, 2018;  Accepted: December 1, 2018.
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ABSTRACT
Volatile organic compounds (VOCs) are released from various sources and are unsafe for human health. Porous materials are promising candidates for the adsorption of VOCs owing to their increased ratio of surface area to volume. In this study, activated carbon (AC) impregnated cellulose acetate (CA) electrospun mats were synthesized using electrospinning for the removal of VOCs from the air mixture of ACs, and CA solution was electrospun at different proportions (5%, 10%, and 15%) in a single nozzle system. The different AC amounts in the electrospun mats were distributed within the AC fibers. The adsorption capacities were measured for acetone, benzene, and dichloromethane, using quartz crystal microbalance (QCM). The results elicited an increasing adsorption capacity trend as a function of the impregnation of ACs in the electrospun mats, while their capacities increased as a function of the AC concentration. Dichloromethane resulted in a faster adsorption process than acetone and benzene owing to its smaller molecular size. VOCs were desorbed with the N2 gas purging, while VOCs were adsorbed at higher temperatures owing to the increased vapor pressures. The adsorption analysis using Dubinin-Astakhov equation showed that dichloromethane is more strongly adsorbed on mats.
Keywords: Activated carbon | Adsorption | Electrospinning | Quartz crystal microbalance | VOCs removal
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