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Adsorption isotherm and kinetics modeling of carotene and free fatty acids adsorption from palm oil onto montmorillonite

BM Jean Baptiste, N Esther, P Mirela, K Richard

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Int. J. Biosci.3(3), 15-24, March 2013

DOI: http://dx.doi.org/10.12692/ijb/3.3.15-24


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Adsorption of carotene and free fatty acid from palm oil onto raw and activated montmorillonite clay has been studied. Acid activation lead to the leaching of exchange cations (Ca2+, K+, Na+, Mg2+) and of ferric ions (Fe3+). Acid activated clay has better carotene and free fatty acid adsorption capacities than raw clay. However, leaching of clay with high concentrated acid solution reduced its adsorption efficiency. The amount of carotene adsorbed per gram of adsorbent also increased with temperature, notwithstanding the acid treatment of clay. The kinetics of carotene and free fatty acid were best described by pseudo-second order and intraparticle diffusion models. The activation energies obtained by applying Arrhenius equation to the pseudo-second order kinetic constant were all lower than 24 kJ.mol-1. It was concluded that there are different types of adsorption sites for carotene adsorption as the adsorption isotherms did not fit Langmuir equation, but they fit very well Freundlich and Temkin models. These observations were also valid for free fatty acids adsorption. The small values of Freundlich constant n, and of Temkin constant B, show the loose bonding of carotene and free fatty acids on clay surface. Hence the adsorption of these 2 compounds is a physisorption.


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Adsorption isotherm and kinetics modeling of carotene and free fatty acids adsorption from palm oil onto montmorillonite

Adamson AW. 1990.¨Physical chemistry of surfaces, 3rd ed. Intersciences publisher, New York. p. 355.

Ahmad AL, Chan CY, Abd-Shukor, Mashitah MD. 2009. Adsorption Kinetic and thermodynamics of b-carotene on silicate-based adsorbent. Chemical Engineering Journal, 148 378-384.

Bera D, Lahiri D, Nag A. 2004. Kinetic studies on bleaching of edible oil using charred sawdust as a new adsorbent. Journal of Food Engineering, 65, 33-36.

Bike Mbah JB, Kamga R, Nguetnkam JP, Fanni J. 2005. Adsorption of pigments and free fatty acids from shea butter on activeted Cameroonian clays. Eur. J. Lipid. Sci. Technol. 107, 387-398.

Breen C, Zahoor FD, Madejova J, Komadel P. 1997. Characterization and catalytic activity of acid-treated, size-fractionated smectites, J. Phys Chem. B, 101, 5324-5331.

Christidis GE, Kosiari S. 2003. Decoloration of vegetable oils: a study of the mechanism of adsorption of b-carotene by an acid activated bentonite from Cyprus. Clays and clay Minerals, 51 (3), 327-333.

Christidis GE, Scott PW, Duhnam AC. 1997. Acid activation and bleaching capacity of bentonites from the islands of Milos and Chios, Aegan. Appl. Clay Sci 12, 329-347.

Falaras P, Kovanis I, Lezou F, Seiragakis G. 1999. Cottonseed oil bleaching by acid-activated montmorillonite. Clay Miner, 34, 221-232.

Hameed BH, El-Khaiary MI, 2008. Equilibrium, kinetics and mechanism of malachite green adsorption on activated carbon prepared from bamboo by K2CO3 activation and subsequent gasification with CO2. Journal of Hazardous Materials 157 (2-3), 344-351.

Ho YS, McKay G. 1999. Pseudo-second order model for sorption processes. Process Biochemistry 34, 451-465.

Kamga R, Kayem JG, Rouxhet PG. 2000. Adsorption of gossypol from cottonseed oil on oxides. J. colloid interface Sci 232, 198-206.

Langmaack T, Eggers R. 2002. On the bleaching kinetics of vegetable oils-experimental study and mass transfer-based interpretation. Eur. J. Lipid Sci. Technol, 104, 98-109.

Nde-Aga BJ, Kamga R, Nguetnkam JP 2007. Adsorption of Palm Oil Carotene and Free Fatty Acid onto Acid Activated Camerounian Clays. J. Applied Sci, 7 (17), 2462-2467.

Nguetnkam JP, Kamga R, Villiéras F, Ekodeck GE, Yvon J. 2007. Assessing the bleaching capacity of some Camerounian clays on vegetable oils. Appl. Clay. Sci. doi: 10. 1016/j. Clay 05.002.

Nguetnkam JP, Kamga R, Villéras F, Ekodeck GE, Razafitianamaharavo A, Yvon J, 2005. Assessment of the surface areas of silica and clay in acid-leached clay material using concepts of adsorption on heterogeneous surfaces. J. colloid Interface Sci 289, 104-115.

Nnadozie N, Arowolo TA, Akpan HJ. 1989. Quality of Nigerian palm oil after bleaching with local treated clay. JAOCS, 66 (2), 218-222.

Rossi M, Gianazza M, Alamprese C, Stanga F. 2003. The role of bleaching clays and synthetic silica il palm oil physical refining. Food Chemistry 82, 291-296.

Sabah E, Çinar M, Çelik MS, 2007. Decolorization of vegetable oils: Adsorption mechanism of b-carotene on acid-activated sepiolite. Food Chemestry, 100, 1661-1668.

Santhy K, Selvapathy P. 2006. Removal of reactive dyes from wastewater by adsorption on coir pith activated carbon. Bioresource Technology, 97, 1329-1336.

Sarrier N, Güller C. 1988 Beta-carotene adsorption of acid-activated montmorillnite. JAOCS, 65 (5), 776-779.

Wu FC, Tseng RL, Huang SC, Juang RS. 2009. Characteristics of pseudo-second order kinetics model for liquid-phase adsorption: A mini review. Chemical Engineering Journal. 151, 1-9.


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