Abstract
ABSTRACTSorbent membranes are designed to meet the requirements for extracorporeal treatment of body fluids. These membranes offer the possibility of combining hemodialysis and hemoperfusion in a single device. Transport of solutes with both sorption and dialysis occurs simultaneously in a sorbent membrane dialyzer. In an effort to determine the sorption capacity and true membrane permeability (by dialysis only) of sorbent membranes, in vitro data were obtained for creatinine. The individual effects of dialysis and sorption on the rate of removal of solutes and their dependence upon flow rate in a sorbent membrane dialyzer were determined from the data of solute vessel concentration vs time. Experiments were carried out with a continuous flow, flat‐plate dialyzer and Enka AG sorbent membranes have been selected for evaluation. It was found that sorption plays an important role in the creatinine removal. However, as the time increases, sorption becomes relatively less important and the creatinine removal becomes dominated by dialysis.
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