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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.17 [2010] >
IJCT Vol.17(4) [July 2010] >
| Title: | Size-dependent growth kinetics of continuous mass crystallization of L-sorbose from its water solutions |
| Authors: | Wierzbowska, B
Piotrowski, K
Hutnik, N
Matynia, A |
| Keywords: | Kinetics
L-sorbose
Mass crystallization |
| Issue Date: | Jul-2010 |
| Publisher: | CSIR |
| Abstract: | The
kinetics of a continuous mass crystallization of L-sorbose from
its water solutions was studied. A precise kinetic model assuming
size-dependent growth (SDG) mechanism was employed. Influences of concentration
of L-sorbose in a feeding mixture and mean residence time of suspension on the
minimum and maximum values of linear growth rate and on nucleation rate were
established. Comparison with kinetic data provided by size–independent growth
(SIG) kinetic model was also made. All G¥
values predicted by SDG model (2.43×10–8–12.10×10–8 ms–1)
are of the same magnitude as G
values provided by the simplest SIG model (1.89×10–8–7.61×10–8
ms–1). Nucleation rate values, B, estimated from SIG model are, however, highly devaluated (B = 1.85×107–18.87×107
m–3s–1) compared to the ones provided by SDG approach
(B = 5.45×1018–1.10×1021
m–3s–1) in which the n(L) predictions are more compatible
with the experimental n(L) data in a whole size range tested. |
| Page(s): | 296-302 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.17(4) [July 2010]
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