1. Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2. College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China
The effect of adsorption conditions such as VOCs type, concentration and bed temperature on adsorption ability were investigated over the ACF. Higher concentration of VOCs resulted in higher adsorption capacity, and the adsorption capacity under 12g/m3 reached 434.8mg/g of toluene. The adsorption of toluene on ACF was less affected by temperature which adsorption capacity still remained 288.3mg/g even at 60℃. The higher the voltage of electro-thermal desorption, the faster the ACF heating rate, and the higher the desorption efficiency, what's more, toluene was fully desorbed after 100minutes. In addition, ACF still had good adsorption performance after four cycles, saturated adsorption amount could attain more than 80% of the original adsorption quantity.
Lu H F, Cao J J, Zhou Y, et al. Novel hydrophobic PDVB/R- SiO2for adsorption of volatile organic compounds from highly humid gas stream [J]. Journal of Hazardous Materials, 2013,262: 83-90.
Baur G B, Beswick O, Spring J, et al. Activated carbon fibers for efficient VOC removal from diluted streams: the role of surface functionalities [J]. Adsorption, 2015,21(4):255-264.
[6]
Zhu T, Lu L, Zhou H, et al. Advances in biopurification technology of VOCs [J]. Journal of Pure and Applied Microbiology, 2013,7(3):2073-2078.
[7]
Lu H F, Zhou Y, Han W F, et al.High thermal stability of ceria-based mixed oxide catalysts supported on ZrO2for toluene combustion [J]. Catalysis Science & Technology, 2013,3(6): 1480-1484.
Balanay J A G, Floyd E L, Lungu C T.Breakthrough curves for toluene adsorption on different types of activated carbon fibers: application in respiratory protection [J]. The Annals of Occupational Hygiene, 2015,59(4):481-490.
Ródenas M A L, Amorós D. C, Solano A. L.Benzene and toluene adsorption at low concentration on activated carbon fibres [J]. Adsorption, 2011,17:473-481.
Johnsen D L, Mallouk K E, Rood M J.Control of electrothermal heating during regeneration of activated carbon fiber cloth [J]. Environmental Science & Technology, 2011,45(2):738-743.
[26]
Son H K, Sivakumar S, Rood M J, et al. Electrothermal adsorption and desorption of volatile organic compounds on activated carbon fiber cloth [J]. Journal of Hazardous Materials, 2016,301:27-34.
Kosuge K, Kubo S, Kikukawa N, et al. Effect of pore structure in mesoporous silicas on VOC dynamic adsorption/desorption performance [J]. Langmuir, 2007,23(6):3095-3102.
