Desorption of β-carotene from bentonite adsorbent under microwave irradiation

Tatjana Novaković, Ljiljana Rožić, Srdjan Petrović, Dragomir Stanisavljev

Abstract


The desorption behavior of β-carotene from a bentonite adsorbent under microwave irradiation in isopropanol was studied as a function of temperature and different initial loading concentrations. A first-order, two-component, three-parameter model described the desorption kinetics with a coefficient of determination R2 > 0.9932, and the β-carotene desorption process under microwave irradiation was controlled by both rapid and slow desorption. The activation energies of β-carotene desorption for the rapid and slow desorption processes were 19.61 and 53.04 kJ mol–1, respectively. It was observed that the desorption equilibrium data fitted well to both the Freundlich and Langmuir isotherms. The data obtained from the desorption-isotherm model were used to determine the thermodynamic parameters. The positive value of free energy indicates the non-spontaneity of β-carotene desorption. The change in entropy relative to the enthalpy of desorption reveals that the reaction is physical in nature.


Keywords


β–carotene; desorption; bentonite; microwave irradiation; kinetics

Full Text:

PDF

References


Y. Yuan, Y. Gao, L. Mao, J. Zhao, Optimization of conditions for the preparation of β-carotene nanoemulsions using response surface methodology, Food Chem., 107, 1300 (2008).

A. Sanches-Silva, T. G. Albuquerque, P. Finglas, T. Ribeiro, A. Valente, E. Vasilopoulos, A. Trichopoulou, I. Alexieva, N. Boyko, C. E. Costra, O. Hayran, M. Jorjadze, L. Kaprelyants, D. Karpenko, L. F. D'Antuoonom, H. S. Costaa, Carotenoids, vitamins (A, B2, C, and E), and total folate of traditional foods from Black Sea Area countries, J. Sci. Food Agric., 93, 3545–3557 (2013).

S. C. Kheok, E. E. Lim, Mechanism of palm oil bleaching by montmorillonite clay activated at various acid concentrations, J. Am. Oil Chem. Soc., 59, 129–131 (1982).

E. Srasra, F. Bergaya, H. van Damme, N. K. Arguib, Surface properties of an activated bentonite – decolorization of rapeseed oil, Appl. Clay Sci., 4, 411–421 (1989).

P. Falaras, I. Kovanis, F. Lezou, G. Seiragakis, Cotton-seed oil bleaching by acid-activated montmorillonite, Clay Miner., 34, 221–232 (1999).

G. E. Christidis, S. Kosiari, Decolorization of vegetable oils: A study of the mechanism of adsorption of β-carotene by an acid-activated bentonite from Cyprus, Clays Clay Miner., 51(3), 327–333 (2003).

M. H. Ma, Ch. I. Lin, Adsorption kinetics of β-carotene from soybean oil using regenerated clay, Sep. Purif. Technol., 39, 201–209 (2004).

E. Sabah, M. Çinar, M. S. Çelik, Decolorization of vegetable oils: Adsorption mechanism of β-carotene on acid-activated sepiolite, Food Chem., 100, 1661–1668 (2007).

M. Muhammad, T. S. Y. Choong, T. G. Chuah, R. Yunus, Desorption of β-carotene from mesoporous carbon-coated monolith: Isotherm, kinetics and regeneration studies, Chem. Eng. J., 173, 474–479 (2011).

M. Huang, Y. Xu, Q. Lv, Q. Ren, Separation and purification of β-carotene from chlorophyll factory residues., Chem. Eng. Technol., 31(6), 922–927 (2008).

Z. Wu, Ch. Li, Kinetics and thermodynamics of β-carotene and chlorophyll adsorption onto acid-activated bentonite from Xinjiang in xylene solution, J Hazard. Mater., 171, 582–587 (2009).

M. Muhammad, T. S. Y. Choong, T. G. Chuah, R. Yunus, Y. H. T. Yap, Adsorption of β-carotene onto mesoporous carbon coated monolith in isopropyl alco-hol and n-hexane solution: Equilibrium and thermody-namic study, Chem. Eng. J., 164, 178–182 (2010).

S. Petrović, Lj. Rožić, Z. Vuković, T. Novaković, D. Stanisavljev, Response surface optimization for activation of bentonite with microwave irradiation, Clays Clay Miner., 60(1), 32–39 (2012).

J. A. Menendez, A. Arenillas, B. Fidalgo, Y. Fernan-dez, L. Zubizrreta, E. G. Calvo, J. M. Bermudez, Mi-crowave involving carbon materials, Fuel Process Technol., 91, 1–8 (2010).

J. Li, Y. G. Zu, Y. J. Fu, Y. C. Yang, S. M. Li, Z. N. Li, M. Wink, Optimization of microwave-assisted extraction of triterpene saponins from defated residue of yellow horn (Xanthoceras sorbifolia Bunge) kernel and evaluation of its antioxidant activity, Innov. Food Sci. Emerg., 11, 637–643 (2010).

G. Zhang, M. Hu, L. He, P. Fu, L. Wang, J. Zhou, Optimization of microwave-assisted enzymatic extraction of polyphenols from waste peanut shells and evaluation of its antioxidant and antibacterial activities in vitro, Food Bioprod. Process., 91, 158–168 (2013).

B. Legras, I. Polert, M. Thomas, L. Estel, About using microwave irradiation in competitive adsorption pro-cesses, Appl. Therm. Engi., 57, 164–171 (2013).

R. Cherbanski, E. Molga, Intensification of desorption processes by use of microwaves: An overview of possible applications and industrial perspectives, Chem. Eng. Process., 48(1), 48–58 (2009).

S. Ramesh, B. S. Jai Prakash, Y. S. Bhat, Enhancing Brønsted acid site activity of ion-exchanged montmorillonite by microwave irradiation for ester synthesis, Appl. Clay Sci., 48, 159–163 (2010).

Lj. Rožić, T. Novaković, S. Petrović, Modelling and optimization process parameters of acid activation of bentonite by response surface methodology, Appl. Clay Sci., 48, 154–158 (2010).

E. P. Barrett, L. G. Joyner, P. H. Halenda, The determination of pore volume and area distributions in porous substances. I. Computations from nitrogen isotherms, J Am. Chem. Soc., 73, 373–380 (1951).

F. Rouquerol, J. Rouquerol, K. Sing, Adsorption by powers and porous solids. In: Principles, methodology and applications, Academic Press, London, 1999, pp. 18–21.

M. D. Johnson, W. J. Weber, Rapid prediction of long-term rates of contaminant desorption from soils and sediments, Environ. Sci. Technol., 35, 427–433 (2001).

R. A. K. Rao, M. A. Khan, B. H. Hameed, Sorp-tion/desorption studies on some natural minerals for the removal of toxic organic pollutants from aqueous solution, Chem. Eng. J., 152, 421–427 (2009).

T. W. Weber, R. K. Chakkravorti, Pore and solid diffusion models for fixed bed adsorbers, AIChEJ, 20, 218–228 (1974).

I. A. W. Tan, B. H. Hammed, A. L. Ahmad, Equilib-rium and kinetic studies on basic dye adsorption by oil palm fiber activated carbon, Chem. Eng. J., 127, 111–119 (2007).




DOI: http://dx.doi.org/10.20450/mjcce.2015.518

Refbacks

  • There are currently no refbacks.




Copyright (c) 2016 Tatjana Novaković, Ljiljana Rožić, Srdjan Petrović, Dragomir Stanisavljev

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.