大孔树脂分离发酵苹果酸的静态吸附工艺研究

通过5种大孔树脂对苹果酸吸附量的比较,其中阴离子树脂D301G吸附率最大。据此探讨了的D301树脂在不同时间、发酵液浓度、转速、pH、温度等影响因素下对静态吸附容量的影响。最终确定最佳操作条件为:转速150r/min、温度37℃、pH为5、吸附时间2 h、发酵液浓度10%。

Study on the Static Adsorption Process of the Abstraction of Malic Acid from Fermentation Broth by Macroporous Resin

Anion resin D301 was the optimal resin for malic acid abstraction by comparison of the adsorption ca- pacity among five kinds of resins. Furthermore, the influence of factors such as pH , time, speed , concentration and temperature on the adsorption efficiency of D301, and the adsorption capacity of D301 were determined. The optimal conditions of abstracting nalic acid were as follows：speed of 150 r/min, 37 ℃, pH =5, 2 h, fermentation broth con- centration 10%.