Growth of boric acid in aqueous solution by using the rotating disc technique

Omer Sahin*, Fevzi Aslan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The effects of hydrodynamic conditions and surface quality on the growth rate of compressed polycrystalline disc of boric acid have been measured in a rotating disc crystallizer under well-established conditions of supersaturation. A new mass transfer equation based on an assumption that crystal growth depends mainly on two consecutive steps, diffusion and surface reaction, was proposed to describe the growth rate of crystals in rotating disc system. It was found that the mass transfer constant, K, and surface reaction constant, k r, increased while overall growth rate order, g, and reaction rate order, r, decreased with increasing the solid-solution velocity and surface smoothness of disc. For both conditions, it was determined that the integration step mainly controls the growth rate of boric acid. The kinetic parameters (K, kr and r) were calculated for different conditions by trial and error method, under no assumption.

Original languageEnglish
Pages (from-to)249-257
Number of pages9
JournalJournal of Crystal Growth
Issue number1-2
Publication statusPublished - 15 Jul 2004
Externally publishedYes


  • A1. Roughening
  • A1. Stirring
  • A2. Growth from solutions
  • B1. Borates
  • B3. Rotating disc


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