| 摘要 |
<p>A process for the selective dialysis of liquid streams containing different materials comprises the steps of providing a porous membrane (10) in a cell (50), the membrane (10) having pores of sufficient dimension to allow passage of the different materials therethrough, circulating an affinity adsorbent stream (55) against a first side of the membrane, where the adsorbent has a dimension larger than that of the pores and has a binding capacity for at least one but not all of the different materials and, passing the liquid stream (52) containing the different materials against a second side of the membrane (10) whereby certain of the materials become bound to the adsorbent upon passing through the membrane (10) to the first side (55) thereof and become separated from others of the materials which can return to the second side (52) of the membrane (10). A separate stripping process (60) is also provided which can be employed in conjunction with the dialysis process (50) or alone where it is desirable to remove bound materials from an affinity adsorbent material.</p> |
