International Journal of Scientific & Technology Research

IJSTR@Facebook IJSTR@Twitter IJSTR@Linkedin
Home About Us Scope Editorial Board Blog/Latest News Contact Us

IJSTR >> Volume 7 - Issue 4, April 2018 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Evaluation of Kinetic Models of Beta-Carotene Adsorption from Palm Oil onto Bentonite

[Full Text]



Tabligh Permana, Erliza Noor, Yandra Arkeman



Bentonite, Beta-carotene, Kinetic model, Palm oil.



In this work, the adsorption of beta-carotene from palm oil onto bentonite was performed under 35 bleaching conditions that were made using a combination of 4 variables. They were varying concentrations of beta-carotene in palm oil (300, 400, 500 mg/kg), varying dosage percentages of bentonite (0.5, 1.25, 2 %), varying surface areas of bentonite (190, 225, 275 m2/g), and varying temperatures (50, 80, 110 oC). The experimental data was analyzed by using several kinetic models (intra-particle diffusion, Elovich equation, pseudo-first order, and pseudo-second order). Kinetic parameters, coefficient of determination, and adsorption curve of models were evaluated to determine the best kinetic model to describe the adsorption of beta-carotene from palm oil onto bentonite. The experimental data was described accurately by the intra-particle adsorption model only at the adsorption process with low adsorption rate. The Elovich equation model showed a tendency to give negative values of sorption capacity at the beginning period of the adsorption process with low initial adsorption rate. At the adsorption process with low and medium adsorption rate constants, the adsorption curve of the pseudo-first order model showed a tendency to move away from the experimental data, but the pseudo-second order model still followed the experimental data. The pseudo-second order model was the most appropriate kinetic model to describe the adsorption of beta-carotene from palm oil onto bentonite.



[1] Ajemba R. O., Igbokwe P. K., Onukwuli O. D., Kinetics, equilibrium, and thermodynamics studies of colour pigments removal from palm oil using activated ukpor clay, Scholars Research Library-Archives of Appl. Sci. Research 4(5):158-166, 2012.

[2] Ajemba R. O., Igbokwe P. K., Onukwuli O. D., Optimization of color pigments removal from palm oil by activated ukpor clay using response surface methodology, Reserach J. of Appl. Sci. Eng. and Tech. 6(3):423-432, 2013.

[3] Ajemba R. O., Onukwuli O. D., Adsorptive removal of colour pigment from palm oil using acid activated Nteje clay: Kinetics, equilibrium, and thermodynamics, J. of Physicochemical Problems of Mineral Processing 49(1):369-381, 2012.

[4] Alkan M., Demirbas O., Dogan M., Adsorption kinetics and thermodynamics of an anionic dye onto sepiolite, Microporous and Mesoporous Materials 101:388-396, 2007.

[5] Al-Zahrani A. A., Al-Shahrani S. S., Al-Tawil Y. A., Study on the activation of Saudi bentonite, part II: Characterization of the produced active clay and its test as an adsorbing agent, J. of King Saud University, Eng. and Sci. 13(2):193-203, 2000.

[6] Bakhtyar K. A., Muhammad A. A., Karim J. J., Acid activation and bleaching capacity of some local clays for decolourizing used oils, Asian J. Chem. 23(6):2449-2455, 2011.

[7] Brooks D. D., Bleaching factors that affect the oil loss, Proceedings of the 1999 PROIM, International palm oil congress, pp. 45-51, 1999.

[8] Christidis G. E., Scott P. W., Dunham A. C., Acid activation and bleaching capacity of bentonite from the Island of Milos and Chios, Aegean, Greece, Appl. Clay Sci. 12:329-347, 1997.

[9] Christidis, G. E, Kosiari S., Decolorization of vegetable oils: a study of the mechanism of adsorption of beta-carotene by an acid-activated bentonite from Cyprus, J. of Clays and Clay Minerals 51(3):327-333, 2003.

[10] Egbuna S. O., Development of kinetic model for adsorption of carotenoids on activated clay in the bleaching of palm oil, Int. J. of Research in Eng. and Tech. Vol. 3 Issue 01:371-380, 2014.

[11] Egbuna, S. O., Mbah C. N., Chima T. O., Determination of optimal process conditions for acid actiation of ngwo clay in bleching of palm oil. Int. J. of Computational Eng. Research Vol. 05 Issue 08:17-29, 2015.

[12] Ho Y. S., McKay G., A comparison of chemisorption kinetic models applied to pollutant removal on various sorbents, Process Safety and Environmental Protection 76(B4):332-340, 1998.

[13] Kheok S. C., Lim E. E., Mechanism of palm oil bleaching by montmorillonite clay activated at various acid concentrations, J. of the American Oil Chemists Society (59):129-131, 1982.

[14] Kirali E., Lacin O., Statistical modeling of acid activation on cotton oil bleaching by Turkish bentonite, J. Food Eng. 75:137-141, 2006.

[15] Makhoukhi B., Didi M. A., Villemin D., Azzouz A., Acid activation of bentonite for use as a vegetable oil bleaching agent, Grasasy Aceites. 60(4):343-349. 2009.

[16] Motlagh M. M., Youzbashi A. A., Rigi Z. A., Efect of acid activation on structural and bleaching properties of bentonite, Iranian J. Mat. Sci. Eng. 8(4):50-56, 2001.

[17] Mustapha S. I., Mohammed A. A., Zakari A. Y., Mohammed H. A., Performance evaluation of local clays from northern Nigeria for the refining of palm oil, J. of Chem. Eng. and Materials Sci. 4(5):58-66, 2013.

[18] Novakovic T., Rozic L., Petrovic S., Stanisavljev D., Desorption of beta-carotene from bentonite adsorbent under microwave irradiation, Macedonian J. of Chem. And Chemical Eng. 34(2), 2015.

[19] Nwankwere E. T., Nwadiogbu J. O., Yilleng M. T., Eze K. A., Kinetic investigation of the adsorptive removal of beta-carotene pigments from palm oil using unmodified natural clay, Pelagia Research Library-Advances in Applied Science Research 3(2):1122-1125, 2012.

[20] Pan B. C., Meng F. W., Chen X. Q., Pan B. J., Li X. T., Zhang W. M., Zhang X., Chen J. L., Zhang Q. X., Sun Y., Application of an effective method in predicting breakthrough curves of fix-bed adsorption onto resin adsorbent, J. of Hazardous Materials 124:74-80, 2005.

[21] Proctor A., Brooks D. D., Adsorptive separation of oils, In Bailey’s industrial oil & fat products, Eds. Shahidi F., sixth ed. John Wiley & Son, New York, pp.267-287, 2005.

[22] Qiu H., Lv L., Pan B. C., Zhang Q. J., Zhang W. M., Zhang Q. X., Critical review in adsorption kinetic models, J. of Zhejiang University-Sci. A 10(5):716-724, 2009.

[23] Sahidi F., Bailey’s Industrial Oil and Fat Products, 6th Edition, John Wiley and Sons, pp. 285-340, 2005.

[24] Selvaraj R., Younghun K., Cheol K. J., Kyunghee C., Jongheop Y., Batch adsorptive removal of copper ions in aqueous solutions by ion exchange resins: 1200H and IRN97H, Korean J. Chem. Eng. 21(1):187-194, 2004.

[25] Silva S. M. , Sampaio K. A., Ceriani R., Verhe R., Stevens C., de Greyt W., Meirelles A. J. A., Adsorption of Carotenes and Phosphorus Palm Oil onto Acid Activated Bleaching Earth: Equilibrium, Kinetics and Thermodynamics, J. of Food Eng. 118:341-349, 2013.

[26] Ugurlu M., Karaoglu M. H., Adsorption of ammonium from an aqueous solution by fly ash and sepiolite: Isotherm, kinetic, and thermodynamic analysis, Microporous and Meoporous Materials 139:173-178, 2011.

[27] Yousef R. I., El-Eswed B., Al-Muhtaseb A. H., Adsorption characteristics of natural zeolites as solid adsorbents for phenol removal from aqueous solutions: Kinetics, mechanism, and thermodynamics studies, Chem. Eng. J. 171(3):1143-1149, 2011.