Investigation of dissolution kinetics of natural magnesite in gluconic acid solutions

Bayrak B., Lacin Ö., Bakan F., Sarac H.

Chemical Engineering Journal, cilt.117, sa.2, ss.109-115, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 117 Sayı: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.cej.2005.12.020
  • Dergi Adı: Chemical Engineering Journal
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.109-115
  • Anahtar Kelimeler: magnesite, gluconic acid, chemical dissolution, kinetics, CALCIUM GLUCONATE, OXIDATION
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study, the dissolution of magnesite particles in aqueous gluconic acid solutions was investigated in a batch reactor employing the parameters of stirring speed, particle size, temperature, solid/liquid ratio and acid concentration. The shrinking core model was evaluated for the rate increased by decreasing particle size and increasing the temperature and initially, the dissolution in terms of acid concentration and then fell with the increasing concentration. No important effect of stirring speed was observed and the dissolution rate decreased as solid/liquid ratio increased. It was shown that the model is: