A Continuous-Flow Stirred Reaction Cell For Studying Adsorption In Suspensions
- D. M. Miller ,
- W. P. Miller and
- M. E. Sumner
Solute sorption by inorganic colloids is currently studied using either batch or miscible displacement techniques, but continuous-flow stirred reaction cells may represent a desirable alternative to these methods in certain situations. A practical limitation of current cell designs is the inadequate mixing effected by magnetic stirrers, which allows the sorbent to rapidly deposit onto the filter membrane. We have designed a continuous-flow stirred reaction cell in which the suspension is efficiently and vigorously mixed by means of a two-blade impeller powered by an electric motor. The impeller shaft is bearing-mounted and sealed with a rubber O-ring. The entire cell is water jacketed for temperature control. Joule heating appears to be insignificant at the impeller speeds required for mixing at flow rates of up to 60 mL h−1. Runs with orthophosphate solution and no adsorbent indicate that mixing is ideal. Data reduction is illustrated using a phosphate/goethite system.
Copyright © .