The adsorption of glycine on resin D301 in glycine aqueous solution was investigated by static adsorption experiments. The optimum adsorption conditions were found by single factor experiments: adsorbent dosage 0.1 g

pH value of solution 7.5

and temperature 35℃. Under these adsorption conditions

the time required for adsorption equilibrium was 45 min

with the maximal equilibrium adsorption amount as 794.81 mg·g-1. The thermodynamic performance of the adsorption process was investigated in the range from 303.15 K to 318.15 K. Langmuir

Freundlich and Temkin isothermal adsorption models were employed to fit the experimental data. The results show that the adsorption of glycine on resin D301 is in accordance with the Langmuir isothermal adsorption model. The thermodynamic parameters

such as ΔHθ

ΔGθ

ΔSθ and apparent activation energy

were calculated to be 134.75 kJ·mol-1

-6.312 kJ·mol-1

450.806 J·mol-1·K-1

and 81.27 kJ·mol-1

respectively. The results indicate that the adsorption process of glycine onto resin D301 is a spontaneous endothermic process with physical and chemical adsorption.