Competitive adsorption of protocatechuic acid and caffeic acid on C18 particles

被引：2

作者：

Yoon, Chang Hwan ^{[1
]}

Zhu, Tao ^{[1
]}

Row, Kyung Ho ^{[1
]}

机构：

[1] Inha Univ, Dept Chem Engn, Inchon 402751, South Korea

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2012年 / 29卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

Adsorption Isotherm; Competitive Adsorption; Protocatechuic Acid; Caffeic Acid; SIMULATED MOVING-BED; LANGMUIR ISOTHERM; STATIONARY-PHASE; CHEMOPREVENTION; CARCINOGENESIS; CHROMATOGRAPHY; SEPARATION;

D O I：

10.1007/s11814-011-0152-z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Comparisons of protocatechuic acid (PA) and caffeic acid (CA) adsorption isotherm on C-18 column and competitive adsorption of the two compounds were investigated. By linear and nonlinear regression analysis, the experimental parameters in the equilibrium isotherms were estimated. Adsorption equilibrium data of the two compounds were investigated using six different models including linear, Langmuir, Freundlich, Langmuir-Freundlich, competitive Langmuir and Quadratic. in the moderate range of concentrations, the competitive Langmuir isotherm proved to be the best model for these experimental data. The regression coefficients of the competitive Langmuir adsorption isotherms were 0.9860 for PA and 0.9898 for CA, respectively. The coefficients obtained for the six isotherm models confirmed the superiority of the competitive Langmuir isotherm for analyzing the competitive adsorption data of solutes.

引用

页码：135 / 138

页数：4

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