Effect of ultrasound on the dissolution of colemanite in H2SO4

OKUR H., TEKİN T., ÖZER A., BAYRAMOĞLU M. R.

HYDROMETALLURGY, cilt.67, ss.79-86, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 67
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0304-386x(02)00137-8
  • Dergi Adı: HYDROMETALLURGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.79-86
  • Anahtar Kelimeler: ultrasound, colemanite, dissolution kinetics, sulfuric acid, KINETICS
  • Atatürk Üniversitesi Adresli: Evet

Özet

This paper deals with the dissolution of colemanite in sulfuric acid, in the absence and presence of ultrasound. By nonlinear regression analysis, a modified Avrami-typeA equation was fitted to kinetic data and the activation energy was found to be 30 kJ/mol in both cases. The effect of ultrasound is on the pre-exponential factor A in the Arrhenius equation. An empirical relation is also given, which relates the rate constant to ultrasound power. (C) 2002 Elsevier Science B.V. All rights reserved.