Estimation and influence of long range solute. Membrane interactions in ultrafiltration

被引:51
作者
Bhattacharjee, S [1 ]
Sharma, A [1 ]
Bhattacharya, PK [1 ]
机构
[1] INDIAN INST TECHNOL,DEPT CHEM ENGN,KANPUR 208016,UTTAR PRADESH,INDIA
关键词
D O I
10.1021/ie9507843
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A new method of estimating the interaction energy between a spherical particle and the wall of a straight cylindrical pore is developed. Based on the method, the variations of the apolar (Lifshitz-van der Waals), electrostatic, and polar (acid-base) interactions between spherical particles and pore walls have been determined for different radial positions of the particle and particle to pore size ratios. Using the estimates of the total interaction comprising the above three components, the thermodynamic (equilibrium) and hydrodynamic parameters characterizing the transport of aqueous macromolecular solutions in membrane pores have been determined using the hydrodynamic approach. Estimates of the permeate flux and solute rejection are obtained by combining the transport model within the membrane pore with the film theory for transport in the boundary layer adjacent to the membrane. The results illustrate the influence of long-range interactions, especially the polar repulsion, on the transport and separation characteristics of membrane pores. Comparisons of the results with the hydrodynamic theory using hard-sphere interactions indicate that the long-range interactions are very important for ultrafiltration membranes with small pores (<100 nm). In the ultrafiltration of aqueous macromolecular solutions using hydrophilic membranes, the polar acid-base repulsion exerts the dominating influence on the distribution coefficient, osmotic reflection coefficient, intrinsic rejection, and the permeate flux.
引用
收藏
页码:3108 / 3121
页数:14
相关论文
共 62 条
[1]   SOLUTE CONCENTRATION EFFECT ON OSMOTIC REFLECTION COEFFICIENT [J].
ADAMSKI, RP ;
ANDERSON, JL .
BIOPHYSICAL JOURNAL, 1983, 44 (01) :79-90
[2]   A NOVEL-APPROACH TO TRANSFER LIMITING PHENOMENA DURING ULTRAFILTRATION OF MACROMOLECULES [J].
AIMAR, P ;
SANCHEZ, V .
INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS, 1986, 25 (04) :789-798
[3]   MECHANISM OF OSMOTIC FLOW IN POROUS MEMBRANES [J].
ANDERSON, JL ;
MALONE, DM .
BIOPHYSICAL JOURNAL, 1974, 14 (12) :957-982
[4]   RESTRICTED TRANSPORT IN SMALL PORES - MODEL FOR STERIC EXCLUSION AND HINDERED PARTICLE MOTION [J].
ANDERSON, JL ;
QUINN, JA .
BIOPHYSICAL JOURNAL, 1974, 14 (02) :130-150
[5]  
[Anonymous], 1992, COMPUTATIONAL METHOD
[6]  
[Anonymous], ACS SYM SER
[7]   PROTEIN ULTRAFILTRATION - EXPERIMENTAL STUDY [J].
BELLUCCI, F ;
DRIOLI, E ;
SCARDI, V .
JOURNAL OF APPLIED POLYMER SCIENCE, 1975, 19 (06) :1639-1647
[8]   LIFSHITZ-VAN DER WAALS ENERGY OF SPHERICAL-PARTICLES IN CYLINDRICAL PORES [J].
BHATTACHARJEE, S ;
SHARMA, A .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1995, 171 (02) :288-296
[9]   FLUX DECLINE BEHAVIOR WITH LOW-MOLECULAR-WEIGHT SOLUTES DURING ULTRAFILTRATION IN AN UNSTIRRED BATCH CELL [J].
BHATTACHARJEE, S ;
BHATTACHARYA, PK .
JOURNAL OF MEMBRANE SCIENCE, 1992, 72 (02) :149-161
[10]   A unified model for flux prediction during batch cell ultrafiltration [J].
Bhattacharjee, S ;
Sharma, A ;
Bhattacharya, PK .
JOURNAL OF MEMBRANE SCIENCE, 1996, 111 (02) :243-258