Fig. 1. Flow rates for various leaching experiments for (a) Column A and (b) Column B. () -100 mm Br step-up, continuous; (
) -20 mm Br step-down, continuous; (
) -20 mm Cl step-up, continuous; (
) -20 mm Cl step-down, intermittent; (
) -20 mm Br step-up, intermittent. The term I is drainage.