Kinetics and thermodynamics for adsorption removal of ethyl carbamate in Chinese rice wine

The effective control of ethyl carbamate( EC) in Chinese rice wine was very important for the food safety and development of the rice wine industry.In this work,adsorption materials were screened for removing EC from Chinese rice wine,and an adsorption resin was obtained with a removal rate of more than 70% for EC.It was also showed good reusability. The adsorption process of the resin could be described by the pseudo- second order kinetic model.The activation energy of adsorption( Ea) was 8.89 × 103 k J / mol.The adsorption isotherm of EC on the resin could be described with the equation of Freundlich,and it was a spontaneous,entropy increasing and endothermic process.These results were helpful for efficiently and conveniently reducing EC content in Chinese rice wine in industrial scale.