ScienceAsia 3 (1977): 175-188 |doi: 10.2306/scienceasia1513-1874.1977.03.175

CRYSTALLIZATION AND CRYSTAL GROWTH RATE: THE EXAMPLE OF MONOHYDRATE CITRIC ACID CRYSTAL GROWTH

C. LAGUERIE^a and S. DAMRONGLERD^b

Summary: Liquid fluidization techniques offer many advantages to crystallization processes. The crystals move uniformly and there are no shocks between them. More than ten thousand crystals of monohydrate citric acid were grown in a transparent fluidizing column of 94 mm diameter. Their characteristic sizes range from 1.12 mm to 4.62 mm. The temperature of each run was held. at 25 ^oC.

                    All the results presented obey the following correlation
                                        Sh = 0.21 Re^0.18 Ga^O.31 Sc^1/3
and the growth rate was of an overall first order with respect to supersaturation.

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a Laboratorie de Recherche et Developpement en Genie Chimique. Institut du Genie Chimique, Chemin de la Loge, 31078 Toulouse Cedex, France.
b Department of Chemical Technology, Chulalongkorn University, Bangkok, Thailand.

Received 4 August 1977