Recovery and Determination of Boron by Magnesia Adsorption from El Max Saline Bittern Solution

G. M. Abd El Wahab

Nuclear Materials Authority, P.O.Box 530 El Maadi, Cairo, Egypt.

Summary

       The present study concerned with the feasibility of using magnesia,(MgO) as an adsorbent for recovering B(0.225g/L) from El Max saline bittern solution  (TDS 530 g/L) via equilibrium batch technique. This adsorbent has been already prepared from the same bittern solution via direct precipitation using NaOH solution. Depending mainly on pH value, contact time and the quantity of added MgO, B was almost adsorbed.  On the other hand, more than 95% of the adsorbed B was regenerated by using hot distilled H₂O, (50^°C) by stirring for 30min to yield B concentrated solution. The latter was used to prepare pure boric acid via gentel thermal evaporation.