Comparison of adsorption equilibrium of glycyrrhizic acid and liquiritin on C18 column

Tao Zhu; Minglei Tian; Kyung Ho Row

Journal of Industrial and Engineering Chemistry, Vol.16, No.6, 929-934, November, 2010

DOI10.1016/j.jiec.2010.09.005 Export Citation

Comparison of adsorption equilibrium of glycyrrhizic acid and liquiritin on C18 column

Tao Zhu, Minglei Tian, and Kyung Ho Row^†

Department of Chemical Engineering, Inha University, 253 Yonghyun-Dong, Nam-Ku, Incheon 402-751, Republic of Korea

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The adsorption isotherms of glycyrrhizic acid (GA) and liquiritin (LQ) on a C18 column were compared and the competitive adsorption of the two compounds was investigated. The experimental parameters in the equilibrium isotherms were estimated by linear and nonlinear regression analyses. The adsorption equilibrium data were correlated into the linear, Langmuir, competitive Langmuir, Freundlich, and Langmuir-Freundlich isothermmodels. Over amoderate concentration range, the competitive Langmuir isotherm provided the best fit to the experimental data. The regression coefficients of the competitive Langmuir adsorption isotherms were 0.9754 and 0.9855 for themixtures of GA and LQ, respectively. The coefficients obtained for the five isothermmodels confirmed the superiority of the competitive Langmuir isotherm for analyzing the adsorption data of solutes.

Keywords:Adsorption isotherm;Competitive adsorption;Glycyrrhizic acid;Liquiritin

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[Related Articles]

[1] Jin Y, Row KH, Korean J. Chem. Eng., 22(2), 264 (2005)

[2] Kim TY, Jin HJ, Park SS, Kim SJ, Cho SY, J. Ind. Eng. Chem., 14(6), 714 (2008)

[3] Yang JS, Baek K, Kwon TS, Yang JW, J. Ind. Eng. Chem., 15(6), 777 (2009)

[4] Georges G, J. Chromatogr. A., 965, 129 (2002)

[5] Fabrice G, Georges G, J. Chromatogr. A., 1008, 23 (2003)

[6] Juza M, J. Chromatogr. A., 865, 35 (1999)

[7] Huthmann E, Juza M, J. Chromatogr. A., 908, 185 (2001)

[8] Yang YJ, Lee CH, Koo YM, Biotechnol. Bioprocess. Eng., 9, 331 (2004)

[9] Heuer C, Kusters E, Plattner T, Seidel-Morgenstern A, J. Chromatogr. A., 827, 175 (1998)

[10] Row KH, Lee CH, Kang JH, Biotechnol. Bioprocess. Eng., 7, 16 (2002)

[11] Kim SH, Shon HK, Ngo HH, J. Ind. Eng. Chem., 16(3), 344 (2010)

[12] Chen SN, Xie YC, Tian QL, Liu HZ, Colloids Surf. A., 305, 42 (2007)

[13] Pompei R, Flore O, Marccialis MA, Pani A, Loddo B, Nature., 218, 689 (1979)

[14] Nagai T, Egashira T, Kudo Y, Yamanaka Y, Shimada T, Jpn. J. Pharmacol., 58, 209 (1992)

[15] Gritti F, Guiochon G, J. Chromatogr. A., 1115, 142 (2006)

[16] Bayrak Y, Micropor. Mesopor. Mater., 87, 203 (2006)