Experimental studies in the sorptive extraction of boron and lithium from thermal waters

We studied the extraction of boron and lithium from prepared and industrial solutions using industrial ionites ATsD-4-1p, AV-16 GS, AN-3, and AV-17-8 and by modified zeolites from the Yagodnoe field, Kamchatka. The modification was performed using aluminum hydroxide, hydrochloric hydroxylamine, or urotropin. We found that when modified with Al(OH) 3 , zeolite shows selectivity with regard to lithium ions. When modified with hydrochloric hydroxylamine or with urotropin zeolites can be used for sorption of boric acid from naturally occurring and industrial solutions. The sorptive capacity of the modified zeolites is 30% higher on average compared with that of industrial ionites.