食品科学
食品科學
식품과학
FOOD SCIENCE
2010年
1期
87-90
,共4页
光皮木瓜多酚%NKA-9型树脂%吸附平衡%吸附热力学
光皮木瓜多酚%NKA-9型樹脂%吸附平衡%吸附熱力學
광피목과다분%NKA-9형수지%흡부평형%흡부열역학
Chaenomeles sinensis polyphenols%NKA-9 resin%adsorption equilibrium%adsorption thermodynamics
以NKA-9型树脂对光皮木瓜多酚的吸附行为为研究对象,对多酚的吸附平衡进行研究,在温度298～308K和浓度20～40mg/mL的范围内,NKA-9型树脂对光皮木瓜多酚吸附的平衡数据符合Langmuir和Freundlich等温吸附方程,且为优惠吸附.对光皮木瓜多酚在NKA-9型树脂上的吸附焓、吉布斯自由能和吸附熵进行计算表明,该吸附过程是一个吸热过程.
以NKA-9型樹脂對光皮木瓜多酚的吸附行為為研究對象,對多酚的吸附平衡進行研究,在溫度298～308K和濃度20～40mg/mL的範圍內,NKA-9型樹脂對光皮木瓜多酚吸附的平衡數據符閤Langmuir和Freundlich等溫吸附方程,且為優惠吸附.對光皮木瓜多酚在NKA-9型樹脂上的吸附焓、吉佈斯自由能和吸附熵進行計算錶明,該吸附過程是一箇吸熱過程.
이NKA-9형수지대광피목과다분적흡부행위위연구대상,대다분적흡부평형진행연구,재온도298～308K화농도20～40mg/mL적범위내,NKA-9형수지대광피목과다분흡부적평형수거부합Langmuir화Freundlich등온흡부방정,차위우혜흡부.대광피목과다분재NKA-9형수지상적흡부함、길포사자유능화흡부적진행계산표명,해흡부과정시일개흡열과정.
Thermodynamic adsorption characteristics of Chaenomeles sinensis polyphenols onto NKA-9 resin were studied. Results showed that adsorption equilibrium data obtained within the temperature range of 298-308 K and concentration range of 20-40 mg/mL could be well fitted by the Langmuir-type and Freundlich-type isotherm equations and the adsorption was favorable type. Meanwhile, the changes of enthalpy, free energy and entropy were measured. It was indicated that the adsorption was an endothermic process.
