TY  - EJOU
AU  - Ramírez, Miguel Ángel 
AU  - Alfonso, Luis 
AU  - González, Patricia 
AU  - Fagundo, Juan Reinerio 
AU  - Suarez, Margaret 
AU  - Melian, Clara 
AU  - Rodríguez, Tania 
AU  - Peniche, Carlos 

TI  - Kinetics of the Demineralization Reaction of Deproteinized  Lobster Shells Using CO<sub>2</sub>
T2  - Journal of Renewable Materials

PY  - 2015
VL  - 3
IS  - 1
SN  - 2164-6341

AB  - The demineralization kinetics of deproteinized lobster shells using CO<sub>2</sub>
 were studied. Demineralization 
reaction proceeds until the concentration of Ca<sup>+2</sup> in solution reaches an equilibrium value. The introduction of 
a cation exchange resin (cationite), in an open system for CO<sub>2</sub>
, allows replacement of the solution Ca<sup>2+</sup> ions by 
Na<sup>+</sup> 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.
KW  - Carbon dioxide
KW  -  chitin
KW  -  demineralization
KW  -  lobster shells

DO  - 10.7569/JRM.2014.634116