Adaptation of Modified Shrinking Core Model for the Description of Salicylic Acid Adsorption on Olive Stones Activated Carbons
Advances in Bioscience and Bioengineering
Volume 5, Issue 3, June 2017, Pages: 42-50
Received: Apr. 8, 2017;
Accepted: Apr. 27, 2017;
Published: Oct. 18, 2017
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Thouraya Bohli, Chemical Engineering Department, National School of Engineers of Gabes, University of Gabes, Gabes, Tunisia
Ghofrane Hamdi, Chemical Engineering Department, National School of Engineers of Gabes, University of Gabes, Gabes, Tunisia
Souaad Suissi Najjar, Chemical Engineering Department, National School of Engineers of Gabes, University of Gabes, Gabes, Tunisia
Abdelmottaleb Ouederni, Chemical Engineering Department, National School of Engineers of Gabes, University of Gabes, Gabes, Tunisia
This work aimed to apply a modified shrinking core model (SCM) for describing the kinetic adsorption process of a solute in a microporous activated carbon in an agitated finite batch aqueous system. To apply the SCM, the diffusion-adsorption process in the pore of the adsorbent is transposed to a diagram of diffusion-reaction according to a mobile front. Indeed, solid adsorbent particle is assumed formed by two layers. The first layer is an inner core, not yet reached by the adsorbate, and the second layer is an outer shell, where diffusion and binding to particle sites are occurring. In this study, two mass transfer resistances are considered; the external liquid film resistance and intraparticle resistance. The developed modified SCM, applied to experimental data for the adsorption of salicylic acid onto olive stone activated carbons and a commercial one, give a more realistic prediction and shows a good accuracy in describing batch adsorption in mixed suspension. The kinetic parameters: the effective diffusivity and the mass transfer coefficient were determined. Using the estimated parameters, a parametric study was carried out to observe the effects of the particle size of adsorbent, the initial adsorbate concentration and the stirring velocity on the system kinetics.
Souaad Suissi Najjar,
Adaptation of Modified Shrinking Core Model for the Description of Salicylic Acid Adsorption on Olive Stones Activated Carbons, Advances in Bioscience and Bioengineering.
Vol. 5, No. 3,
2017, pp. 42-50.
Liu Q. S., Zheng T., Wang P., Jiang J. P., Li N (2010) Adsorption isotherm, kinetic and mechanism studies of some substituted phenols on activated carbon fibers. Chem. Eng. J. 157(2010) 348-356.
Kumar D., Gaur J. P (2011) Chemical reaction- and particle diffusion-based kinetic modeling of metal biosorption by a Phormidium sp.-dominated cyano bacterial mat. Biores. Tech. 102: 633–640.
Tang W., Huang H., Gao Y., Liu X., Yang X., Ni H., Zhang J (2015) Preparation of a novel porous adsorption material from coal slag. Materials and Design 88: 1191-1200.
Frascari D., Bacca A. E. M., Zama F., Bertin L., Fava F., Pinelli D (2016) Olive mill wastewater valorisation through phenolic compounds adsorption in a continuous flow column. Chem Eng J 283:293–303.
Abussaud B., Asmaly H. A., Saleh T. A., Gupta V. K., Laoui T., Atieh M (2015) Sorption of phenol from wasters on activated carbon impregnated with iron oxide, aluminum oxide and titanium oxide. J molecular liq. dx.doi.org/10.1016/j.molliq, 08.044.
Jena P. R., Basu J. K., De S (2004) A generalized shrinking core model for multicomponent batch adsorption processes. Chem. Eng. J. 102:267–275
Kasnejad M. H., Esfandiari A., Kaghazchi T., Asasian N (2012) Effect of pre-oxidation for introduction of nitrogen containing functional on Cu(II) adsorption, J. Taiwan Inst. Chem. Eng. 43:736–740.
Bohli T., Ouederni A, Fiol N., Villaescusa I (2015) Evaluation of an activated carbon from olive stones used as an adsorbent for heavy metal removal from aqueous phases. C R Chimie 18:88–99.
Gokce Y, Aktas Z (2014) Nitric acid modification of activated carbon produced from waste tea and adsorption of methylene blue and phenol. App Surf Sc 313: 352-359.
Yang Q., Zhao M., Lin L (2016) Adsorption and desorption characteristics of adlay bran free phenolics on macroporous resins, Food Chemistry 194:900-907.
Pritzker M (2004) Modified shrinking core model for uptake of water soluble species onto sorbent particles, Adv. Environ. Res.84:39-453.
Osifo P. O., Webster A., der Merwe H., Neomagus H. W. J. P., der Gun M. A., Grant D. M(2008) The influence of the degree of cross-linking on the adsorption properties of chitosan beads. Bio Tech 99:7377–7382.
Sarkar D., Bandyopadhyay A (2011) Shrinking Core Model in characterizing aqueous Phase dye adsorption. Chem. Eng. Research and Design 89 69–77.
Fernandes Z, Gando-FerreiraL M (2011) Kinetic modeling analysis for the removal of Cr(III) by Diphonix resin. Chem. Eng. J 172: 623– 633.
Traylor S. J., Xu X., Lenhoff A. M (2011) Shrinking-core modeling of binary chromatographic breakthrough. J. Chromatography A 1218:2222–2231.
Knorr T., Kaiser M., Glenk F., Etzold B. J. M (2012) Shrinking core like fluid solid reactions-A dispersion model accounting for fluid phase volume change and solid phase particle size distributions, Chem. Eng. Sc. 69:492-502.
Pritzker M. D (2003) Model for parallel surface and pore diffusion of an adsorbate in a spherical adsorbent particle, Chem. Eng. Sc. 58 473 – 478.
Jena P. R., De S., Basu J. K(2003) A generalized shrinking core model applied to batch adsorption, Chem. Eng. J. 95 143–154.
Jena P. R., Basu J. K., De S (2004)A generalized shrinking core model for multicomponent batch adsorption processes, Chem. Eng. J. 102 267–275.
Mckay G., EL Guendi M. Nassar M. M (1996) Pore diffusion during the adsorption of dyes onto BAGASSE PITH. Trans. I. Chem. E. B 74.
Liddell K. C (2005) Shrinking core models in hydrometallurgy: What students are not being told about the pseudo-steady approximation, Hydrometallurgy 79: 62– 68.
Bohli T., Ouederni A (2016) Improvement of oxygen-containing functional groups on olive stones activated carbon by ozone and nitric acid for heavy metals removal from aqueous phase, Environ. Sci. Pollut. Res. DOI 10.1007/s11356-015-4330-0.
Ben Yahia S., Ouederni A (2012) Hydrocarbons Gas Storage on Activated Carbons, Int. J. Chem. Eng. App. 3:3.