EFFECTIVENESS OF THE SEPARATION OF MAGNESIUM AND LITHIUM FROM SEAWATER WITH SODIUM SILICATE PRECIPITATION PROCESS

Experiments have been carried out to separate elements of magnesium and lithium from seawater produce a concentrate product that is free through sodium silicate precipitation processes. In this study, the sample used was taken Ancol Lagoon Area, North Jakarta. The sea water contains 0.1674 ppm ions 1761 with high Mg/Li ratio 10521. containing levels not suitable as raw material for manufacture carbonate (battery active ingredient) prior initial processing. research variable volume solution added by 10 ml, 20 30 40 50 60 70 100 ml which were equivalent 13%, 27% 40%, 53%, 67%. , 80 %, 93%, 107% stoichiometry ion technique adding included single stage multi-stages. From experimental results, it can be seen most effective addition 80% stoichiometry. process succeeded in separating indicated decrease Mg/li 10521 64. obstacle study there still many also precipitated during so lost filtrate reached 82.26% process. Therefore, multi-stage 6 stages each 1/6 at optimum conditions. results obtained able reduce 76.54%. concluded efforts percentage need development