Open Access
ARTICLE
Kinetics of the Demineralization Reaction of Deproteinized Lobster Shells Using CO2
Miguel Ángel Ramírez1, Luis Alfonso†, Patricia González2, Juan Reinerio Fagundo2, Margaret Suarez3,
Clara Melian3, Tania Rodríguez1, Carlos Peniche4,*
1
Scientifi c Technological Base Unit (UCTB) Los Palacios, National Institute of Agricultural Sciences (INCA), Mayabeque, Cuba
2 School of Chemistry, University of Havana, Havana, Cuba
3 Department of Radiochemistry, Higher Institute of Technologies and Applied Sciences (InSTEC), Havana, Cuba
4 Biomaterials Center (BIOMAT), University of Havana, Ave. Universidad SN e/ G y Ronda, Vedado, 10600 Havana, Cuba
† National Center for Scientifi c Research, Havana, Cuba. Died July 25, 2012. This work is dedicated to his memory
* Corresponding Author:
Journal of Renewable Materials 2015, 3(1), 73-80. https://doi.org/10.7569/JRM.2014.634116
Received 17 June 2014; Accepted 04 August 2014;
Abstract
The demineralization kinetics of deproteinized lobster shells using CO
2
were studied. Demineralization
reaction proceeds until the concentration of Ca
+2 in solution reaches an equilibrium value. The introduction of
a cation exchange resin (cationite), in an open system for CO
2
, allows replacement of the solution Ca
2+ ions by
Na
+ ions, whereby the equilibrium shifts and an effective dissolution of the exoskeletons’ calcite is achieved.
The mathematical relationships between the conductivity of the solution and the concentrations of major
ions, the rate constants and kinetic parameters of the reaction in the absence and presence of the resin were
obtained. It was found that the reaction follows pseudo-fi rst-order kinetics, and the experimental results were
in good agreement with the proposed mathematical model.
Keywords
Cite This Article
APA Style
Ramírez, M.Á., Alfonso, L., González, P., Fagundo, J.R., Suarez, M. et al. (2015). Kinetics of the demineralization reaction of deproteinized lobster shells using co2. Journal of Renewable Materials, 3(1), 73-80. https://doi.org/10.7569/JRM.2014.634116
Vancouver Style
Ramírez MÁ, Alfonso L, González P, Fagundo JR, Suarez M, Melian
, et al. Kinetics of the demineralization reaction of deproteinized lobster shells using co2. J Renew Mater. 2015;3(1):73-80 https://doi.org/10.7569/JRM.2014.634116
IEEE Style
M.Á. Ramírez et al., "Kinetics of the Demineralization Reaction of Deproteinized Lobster Shells Using CO2," J. Renew. Mater., vol. 3, no. 1, pp. 73-80. 2015. https://doi.org/10.7569/JRM.2014.634116