圧力場および電場を駆動力とする膜分離の特性と今後の課題
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Recently, separation technique of fine particles from suspension with membrane using overlapped driving forces of pressure field and electric field has been widely used in pharmaceutical industry, food industry, biological industry and so on.<BR>Electrophoresis and electroosmosis are very important phenomena for electrodialysis, electro -ultrafiltration, electroosmotic dewatering of sludge, isoelectric focusing, etc. Therefore, the former-equations concerning electrophoresis and electrodialysis are discussed from a practically available point of view.<BR>This paper deals with the following subjects.<BR>(1) The effect of particle concentration of suspension on electrophoretic velocity is discussed. This problem is very important in the case where concentrative suspension is treated practically.<BR>(2) Equation of electroosmotic flow rate passing through particle packed bed, respective membranes combined in series and in parallel with different kinds of membranes.<BR>(3) Electrokinetic phenomena in the nonaqueous dispersion system and the applications of these phenomena to separation are introduced.<BR>(4) The characteristics of electro-ultrafiltration and problems in electro-ultrafiltration to be solved are discussed.<BR>(5) Recent studies on continuous separation of biochemical substances such as protein, enzyme, hormone, etc. are reviewed and in the cases of scale up and continuous operation for separation apparatus, problems to be solved hereafter are considered.
- 日本膜学会の論文
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