A new pulsed membrane method and a reactor-mass exchanger unit for sorption in a fine-particle sorbent-liquid system are proposed. A mathematical model and a design method are developed for units with a perfectly mixed or plug-flow reactor. The parameters of the sorption process in the unit are determined. The results obtained are collated with the results of simulation of static and dynamic sorption processes for the following systems: carboraffin-dry wine material-dyes, zirconium phosphate-champagne wine material-Ca2+, zirconium phosphate-white dry wine material-Ca2+, zirconium phosphate-port-Ca2+, biosorbent OK-1-wine material-Fe3+, biosorbent OK-L1-wine material-Fe3+, yeast sorbent-wine material-phosalone. (C) 2002 Elsevier Science Ltd. All rights reserved.