ANALYSIS OF A CONTINUOUS IMMOBILIZATION REACTOR

The second-order reaction by which a species is transferred from solut ion to a fixed site in a porous solid is considered. A web of the poro us solid moves under a reservoir of the solution, which saturates as l iquid percolates downward. The saturated web then passes through a zon e in which there is no downward flow and on to a pair of rollers where an arbitrary fraction of the solution is physically expressed and the reaction continues in time. The salient behavior of this class of rea ctors is described in the hodograph plane. Accommodating optimized des igns are detailed under constraints which arise naturally. Comparison is made with experiment for the application to chelation of sodium pyr ithione to zinc sites in cellulose sponge.