Study on Impurities Removal of Lithium Chloride Solution Applied β-FeOOH as Adsorbent
Based on the lithium chloride solution containing fluorine and phosphate,as well as the comparative results between chemical precipitation and static adsorption,the effects of akaganeite(β-FeOOH)on the adsorption of F-and PO43-have been comprehensively investigated.The results show that the efficiency of impurity removal by β-FeOOH is superior to that of chemical precipitation.Increases in the amount of adsorbent,adsorption temperature,and ion concentration are conducive to the adsorption capacity of anions.In addition,β-FeOOH exhibits better adsorption performance under weakly acidic or neutral conditions.The adsorption capacities of F-and PO43-could reach 79.9mg/g and 29.8mg/g,respectively.The adsorption mechanism is predominantly a combination of electrostatic attraction and chemical adsorption.
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