谷氨酸反渗透提取的透过试验研究

The Test and Research on Glutamic Acid Extracting Based on Reverse Osmosis

为进一步提高从废糖中提取谷氨酸的得率与生产能力,采用AFC99聚酰胺半透膜进行了反渗提取试验研究。结果表明,单向增加溶液压力与渗透速度成正比,呈线性规律;该直线斜率随膜面流速而变化,流速大,斜率大,渗透速度也大,反之则小。为此,设法提高加压压力及其与渗透速度之间的直线斜率,减小膜面与主流之间的浓度差,即可提高谷氨酸得率及生产能力。

Extracting glutamic acid from waste sugar by AFC99 polyamide membrane with reverse osmosis was tested with increase in extraction percentage and producing efficiency. The results showed that the osmosis speed was directly proportional to liquid pressure and was related to flow velovity through membrane. Therefore, enlarging the liquid pressure and decreasing the concentration difference between the membrane and the main flow will result in raising the glutamic acid extracting rate and its producing efficienvy.