Abstract
The feasibility of using chitosan, activated carbon, and activated earth to remove FFA from crude catfish visceral oil, and the adsorption kinetics of the procedure were evaluated. The effect of adsorbents on water activity and the 18∶3 and 22∶6 content of crude catfish visceral oil was also studied. The initial adsorption kinetic coefficients of FFA (mL g−1 min−1) were 0.1, 0.07, and 0.03 for chitosan, activated carbon, and activated earth, respectively. The external film mass-transfer coefficient (0.001 mL s−1) was similar for the three adsorbents. The adsorption capacity of FFA at saturation (mg g−1) was 71.2 for chitosan, 65.5 for activated carbon, and 57.0 for activated earth. The intraparticular diffusion coefficients (mg mL−1 min−0.05) were 0.14, 0.12, and 0.09 for chitosan, activated carbon, and activated earth, respectively. Water activity of the crude oil decreased with increased contact time of the adsorbents. Results indicated that chitosan was a better adsorbent than activated carbon and activated earth for FFA removal from crude catfish visceral oil.
Similar content being viewed by others
References
NASS-USDA, Catfish Products, National Agricultural Sttatistics Service, Agricultural Statistics Board, U.S. Department of Agriculture Washington, DC, 2001.
Sathivel, S., W. Prinyawiwatkul, C.C. Grimm, J.M. King, and S. Lloyd, FA Composition of Crude Oil Recovered from Catfish Viscera, J. Am. Oil Chem. Soc. 79:989–992 (2002).
Young, F.V.K., Processing of Oils and Fats, Chem. Ind. 16:692–703 (1978).
Toro-Vazquez, J.F., and A. Rocha-Uribe, Adsorption Isotherms of Sesame Oil in a Concentrated Miscella System, J. Am. Oil. Chem. Soc. 70:589–594 (1993).
Riberio, M.H.L., P.A.S. Lourenco, J.P. Monteiro, and S. Ferreira-Dias, Kinetics of Selective Adsorption of Impurities from a Crude Vegetable Oil in Hexane to Activated Earths and Carbons. Eur. Food Res. Technol. 213:132–138 (2001).
Geankoplis, C.J., Transport Processes and Unit Operations, 3rd edn., Prentice Hall, Englewood Cliffs, NJ, 1993, pp. 697–749.
Sathivel, S., W. Prinyawiwatkul, J.M. King, C.C. Grimm, and S. Lloyd, Oil Production from Catfish Viscera, J. Am. Oil Chem. Soc. 80:377–382 (2003).
AOAC, Official Methods of Analysis of the Association of Official Analytical Chemists, 14th edn., AOAC, Arlington, VA, 1990, Methods 969.33, 940.28.
Kadirvelu, K., C. Faur-Brasquet, and P. Le Cloirec, Removal of Cu(II), Pb(II), and Ni(II) by Adsorption onto Activated Carbon Cloths, Langmuir 16:8404–8409 (2000).
Toro-Vazquez, J.F., and G. Mendez-Montealvo, Competitive Adsorption Among Sesame Oil Components in a Concentrated Miscella System, J. Am. Oil Chem. Soc. 72:675–679 (1995).
Capitani D., V. Crescenzi, A.A. De Angelis, and A.L. Segre, Water in Hydrogels. An NMR Study of Water/Polymer Interactions in Weakly Cross-Linked Chitosan Networks, Macromolecules 34:4136–4144 (2001).
Piron, E., M. Accominotti, and A. Domard, Interaction Between Chitosan and Uranyl Ions. Role of Physical and Physicochemical Parameters on the Kinetics of Sorption, Langmuir 13:1653–1658 (1997).
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Sathivel, S., Prinyawiwatkul, W. Adsorption of FFA in crude catfish oil onto chitosan, activated carbon, and activated earth: A kinetics study. J Amer Oil Chem Soc 81, 493–496 (2004). https://doi.org/10.1007/s11746-004-0929-0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11746-004-0929-0