Abstract
The granulation of powdered manganese-oxide adsorbent was carried out with PVC as a binder. A strength test on the basis of shaking method showed that the breakage of the granulated adsorbentwas less than 1% when the PVC content was above 20%.
The lithium adsorptive properties of the granulated adsorbent was investigated by both a batchand column methods. It showed a high selectivity for lithium in sea water. The added PVC hada slight influence on the lithium adsorptivity. The lithium uptake by the adsorbent (particlediameter, 2.0-2.8mm) reached 4.5mg·g-1 after the column operation for 50 days at 15-22°C. The granule had a sufficient stability after the adsorption experiment.
