Patulin adsorption kinetics on activated carbon, activation energy and heat of adsorption


Mutlu M., Hizarcioglu N., GÖKMEN V.

JOURNAL OF FOOD SCIENCE, cilt.62, sa.1, ss.128-130, 1997 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 62 Konu: 1
  • Basım Tarihi: 1997
  • Doi Numarası: 10.1111/j.1365-2621.1997.tb04382.x
  • Dergi Adı: JOURNAL OF FOOD SCIENCE
  • Sayfa Sayıları: ss.128-130

Özet

The kinetics of adsorption of patulin on activated carbon were studied at different initial patulin concentrations (100-400 ppb) for the temperature range 20-80 degrees C. Apparent adsorption rate constants (k(aapp)) were changed from 1.07 x 10(-3) to 1.86 x 10(-3) g(-1) min(-1) while the temperature increased from 20 to 80 degrees C. For equilibrium adsorption curves; the Langmuir model was attempted and model parameters (K and Q degrees) were obtained for different temperatures. Energy of activation and heat of adsorption were determined in a batch adsorption system (E(a) = 2.02 kcal/mol and Delta H = 2.24 kcal/mol). The adsorption occurred endothermically and by physical mechanisms.