STUDY ON DESALINATION PROCESS USING LIQUID MEMBRANE

液膜海水淡化工艺研究

• 批准号: 07555549
• 负责人: HOZAWA Mitsunori
• 金额: $ 0.77万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555549/
• 关键词: LIQUID MEMBRANE; DESALINATION PROCESS; EMULSION; EMULSION LIQUID MEMBRANE; EXTRACTION; HOLLOW FIBER; STIRRED CELL; SURFACTANT; 中空系; バルク液膜; 隔膜; 物質移動係数

For the establishment of the novel desalination system in the downstream processing of biochemical products, the following two apparatus using the liquid membrane system were developed in the present work and their characteristics were investigated experimentally. In the design of the apparatus for the desalination, it is important to contact the two kinds of W/O emulsions to extract the cation and anion with the feed solution, preventing the emulsions from contacting each other.Apparatus (1) : The hollow fibers, through which the two kinds of W/O emulsions were separately passed, were put in the stirred cell including the feed solution.Apparatus (2) : The stirred cells including the two kinds of W/O emulsions respectively were separated by the partition through which the feed solution can pass but each emulsion can not.As a result, the apparatus (1) was not available for the desalination system because it is difficult to keep the interface between the emulsion phase and the feed solution in the pore of the hollow fiber adjusting the inner and outer pressures of the fiber. While, in the apparatu (2), it was found that the two stainless steel meshes which were coated by the fluorine-contained polymers and piled at intervals of 5 mm are useful as the partition to separate the emulsions. Also, the collision rate of emulsions to the partition is one of the important factors to control the leakage of the emulsions, and we can accomplish to transfer only the ions by adjusting the dispersion conditions of emulsions and the volume ratio of emultions to that of the feed solution.

为了在生化产品的下游加工中建立新型的脱盐系统，在本工作中开发了以下两个使用液体膜系统的设备，并对它们的特征进行了实验研究。在脱水的装置的设计时，重要的是与乳液的两种类型的阳离子和阴离子与饲料溶液中提取和阴离子，以防止乳液相互接触。阿帕图斯（1）：空心纤维，溶液，通过将两种液体搅拌，包括两种细胞。分别通过饲料溶液可以通过的分区分别分开乳液，但每种乳液不能通过。结果，脱盐系统无法使用设备（1），因为很难将乳液阶段和进料溶液之间的界面保持在空心纤维孔之间的界面，从而调节了纤维内部和外部压力的内部压力。虽然在设备（2）中，发现两个不锈钢网壳被含氟的聚合物覆盖并以5 mm的间隔堆积，可作为分隔乳液的分隔线。同样，乳液与分区的碰撞速率是控制乳液泄漏的重要因素之一，我们可以通过调整乳液的分散条件以及模仿与进料溶液的体积比来仅通过离子来转移离子。