請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/45647
標題: Adsorption Kinetic, Thermodynamic, and Desorption Studies of Isopropyl Alcohol Vapor by Oxidized Single-Walled Carbon Nanotubes
作者: Hsu, S.C.
盧重興
Lu, C.Y.
關鍵字: volatile organic-compounds
activated carbon
pore structure
equilibrium
nanofibers
acetone
water
期刊/報告no:: Journal of the Air & Waste Management Association, Volume 59, Issue 8, Page(s) 990-997.
摘要: Single-walled carbon nanotubes (SWCNTs) were oxidized by sodium hypochlorite (NaOCl) solution and used as adsorbents to study adsorption kinetics, thermodynamics, and desorption of isopropyl alcohol (IPA) vapor in an airstream. The adsorption capacity of IPA decreased with temperature, indicating an exothermic nature of the adsorption process, and slightly decreased with relative humidity, showing a hydrophobic nature of the adsorbent surface. The adsorption mechanism appears mainly attributable to physical forces from 5 to 25 degrees C but appears primarily attributable to chemical forces from 25 to 35 degrees C. A comparative study on the cyclic IPA adsorption between SWCNTs(NaOCl) and granular activated carbon, GAC(NaOCl), was also conducted and the results revealed that the SWCNTs(NaOCl) show better repeated availability of IPA adsorption during 15 cycles of operation than the GAC(NaOCl). This suggests that the SWCNTs(NaOCl) are efficient IPA adsorbents and can be used in the prolonged cyclic adsorption/desorption operation.
URI: http://hdl.handle.net/11455/45647
ISSN: 1047-3289
文章連結: http://dx.doi.org/10.3155/1047-3289.59.8.990
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