Fitting of different models for water vapour sorption on potato starch granules

被引：19

作者：

Czepirski, L

Komorowska-Czepirska, E

Szymonska, J

机构：

[1] Stanislaw Staszic Univ Min & Met, Fac Fuels & Energy, PL-30059 Krakow, Poland

[2] Univ Agr, Dept Chem, PL-30059 Krakow, Poland

来源：

APPLIED SURFACE SCIENCE | 2002年 / 196卷 / 1-4期

关键词：

water sorption; bio-based adsorbents; BET model; fractal dimension;

D O I：

10.1016/S0169-4332(02)00050-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Water vapour adsorption isotherms for native and modified potato starch were investigated. To obtain the best fit for the experimental data several models based on the BET approach were evaluated. The hypothesis that water is adsorbed on the starch granules at the primary and secondary adsorption sites as well as a concept considering the adsorbent fractality were also tested. It was found, that the equilibrium adsorption points in the examined range of relative humidity (0.03-0.90) were most accurately predicted by using a three-parameter model proposed by Kats and Kutarov. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：150 / 153

页数：4

共 12 条

[1] Chemistry and properties of starch based desiccants [J].