Evaluation of growth rate constants of oxalic acid dihydrate at constant supersaturation

✍ Scribed by N. Rodriguez-Hornedo

• Publisher: John Wiley and Sons
• Year: 1986
• Tongue: English
• Weight: 222 KB
• Volume: 75
• Category: Article
• ISSN: 0022-3549
• DOI: 10.1002/jps.2600750607

✦ Synopsis

It is shown that at constant supersaturation during crystallization of oxalic acid dihydrate, the growth rate equation can be solved in closed form. At low degrees of supersaturation, where nucleation is negligible, the depletion of solute from solution is described by a cube root relationship and allows for calculation of the growth rate constant.

Crystal growth rates for oxalic acid dihydrate in the cosolvent aqueous systems studied1V2 have been found to follow a relationship:

--dM -GA (C -SF dt where dM is the mass crystallized in a time interval dt, G is the growth rate constant, A is the surface area of the crystals,