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A Technique for Studying the Kinetics of Adsorption in Suspensions¹

ABSTRACT

Experimental techniques are described for study of both the kinetics and equilibria of metal sorption in colloidal managanese dioxide suspensions. The techniques and apparatus appear not to contaminate the reactants or to sorb metal ions onto the reaction vessel walls, even at pH's as high as 8 and metal concentrations in parts per billion. Products and reactants can be monitored simultaneously, and a complete accounting made of the ions thought to participate in the reaction. This system allows description of the sorption process from mixing to equilibrium. Repeated sequential sampling does not alter the ratio of solution to suspension, and accurate equilibrium data can be obtained from kinetic experiments over extended periods.

¹ Contribution from the Dep. of Land, Air, & Water Resources, Univ. of California, Davis, CA, 95616.

² Graduate Assistant and Associate Professor, respectively.

Received for publication September 6, 1977. Accepted for publication November 8, 1977.