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


Mutlu M., Hizarcioglu N., GÖKMEN V.

JOURNAL OF FOOD SCIENCE, vol.62, no.1, pp.128-130, 1997 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 62 Issue: 1
  • Publication Date: 1997
  • Doi Number: 10.1111/j.1365-2621.1997.tb04382.x
  • Journal Name: JOURNAL OF FOOD SCIENCE
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.128-130

Abstract

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.