【摘要】 研究了以聚氯化铝(PAC)为原料合成锂吸附剂,在最佳条件下制备得到吸附剂,其最大饱和吸附容量为6.1 mg/g,适宜的吸附溶液pH为3～5,对Li-Ca体系选择性很好,能很好地分离锂离子和钙离子,在最佳脱附条件下脱附率达到40.58%。吸附机理的研究表明,吸附剂在吸附前后,结构未发生明显变化,吸附、脱附过程中有锂离子的嵌入和脱出,且锂离子的嵌入和脱出是与氢离子发生了离子交换。更多还原

【Abstract】 The adsorbent prepared with poly aluminum chloride(PAC) as raw material was studied.Under the optimal conditions,the maximum adsorption capacity of the adsorbent was 6.1 mg/g,and the pH of the suitable adsorption solution was at3～5.Results showed that the absorbent had good selectivity on the Li-Ca system,the lithium ions and calcium ions were separated very well,and the desorption rate reached 40.58%.The research on adsorption mechanism showed that the structure of the adsorbent did not change significantly before and after adsorption.During the adsorption and desorption process,lithium ions were intercalated and desorbed,and the intercalation and deintercalation were because of the ion exchange between lithium ions and hydrogen ions.更多还原