Search Result of "Kazunori Nakano"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Diffusivity of Xylitol in Granular Activated Charcoal)

ผู้เขียน:Imgดร.สาโรจน์ ศิริศันสนียกุล, รองศาสตราจารย์, ImgKazunori Nakano, ImgMasatoshi Matsumura

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Abstract

The xylitol adsorption on granular activated charcoal was investigated. From the experimental observations, a non-linear adsorption isotherm of Lamgmuir type equation was used to describe intraparticle diffusivity of xylitol on granular activated charcoal in liquid-phase adsorption. Two langmuir coefficients, Qmax = 0.2191 kg/kg and k = 0.1216 m3/kg were estimated using linear regression analysis. Surface diffusion coefficients (Ds) were determined from adsorption rates in a finite bath using diffusion model. As a result, Ds increased with and increase of initial xylitol concentration (CL0) or so called an equilibrium amount of xylitol adsorbed on activated charcoal (q?). This relation resulted in the following equation, Ds = 0.7911x10-8 exp(5.849q?). In addition, for a packed bed column, a perfect mixing model gave a good fitting with experimental result under the conditions of this investigation. The simulation with perfect mixing model were demonstrated with changes of flow rates and bed lengths. Different saturation time and no breakthrough times were figurely revealed.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 029, Issue 1, Jan 95 - Mar 95, Page 115 - 126 |  PDF |  Page