Growth Kinetics of Calcium Sulfate Dihydrate in the Presence of Tartaric Acid


Polat S., Sargut S., Sayan P.

BIWIC 2016 - 23rd International Workshop on Industrial Crystallization, Magdeburg, Almanya, 6 - 08 Eylül 2016

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Magdeburg
  • Basıldığı Ülke: Almanya
  • Marmara Üniversitesi Adresli: Evet

Özet

The aim of the present study was to investigate the crystallization kinetics of calcium sulfate dihydrate. The reactive crystallization of calcium sulfate dihydrate in the absence and presence of 250 ppm, 1000 ppm and 2500 ppm tartaric acid concentrations was carried out using mixed-suspension-mixed-product-removal (MSMPR) crystallizer. The growth kinetic of calcium sulfate dihydrate crystals was analyzed on the basis of size-independent growth model (McCabe’s DL law) and size-dependent growth models. Since the calcium sulfate dihydrate crystal growth was found to be dependent on crystal size, kinetic parameters were calculated by ASL, C-R, MJ2, and MJ3 model on the basis of population balance theory. Also, relative coefficient, mean square error and the mean square deviation were determined for each model and the results showed that MJ3 model closely fitted the experimental data.