Mg/Al型水滑石吸附硼的实验研究  

STUDIES ON ADSORPTION OF BORON BY Mg/Al HYDROTALCITES

作　　者：闫春燕[1,2] 伊文涛[1,2] 马培华[2] 李法强[2] 

机构地区：[1]枣庄学院化学化工系,枣庄277160 [2]中国科学院青海盐湖研究所,西宁810008

出　　处：《离子交换与吸附》2009年第3期233-240,共8页Ion Exchange and Adsorption

基　　金：国家“十五”科技攻关项目(2004BA602B-01)

摘　　要：采用共沉淀法制备了几种不同摩尔比的镁铝水滑石(LDHs),并对其进行了XRD、FT-IR表征。将其应用于吸附溶液中的硼,比较了它们对硼的吸附容量,最终选择了具有较高吸附容量的Mg4Al-LDH作为硼吸附剂。对Mg4Al-LDH吸附硼的实验条件进行了系统研究,得到了较高吸附容量下的实验条件。试验结果表明该等温吸附过程可用Langmuir吸附等温模型准确描述。Mg/A1 hydrotalcites with different mole ratios were prepared by co-precipitation method, and the products were characterized by XRD and FT-IR. The hydrotalcites prepared were applied to adsorb boron from boron-containing solutions, and their adsorption capacities were compared. Mg4A1-LDH with the best absorption performance was chosen as the absorbent in the end. Factors influencing the absorption effect of boron by Mg,A1-LDH were investigated, and the optimal conditions were obtained. The fitting results showed that the adsorption process can be described by Langmuir isotherm model.

关 键 词：Mg/Al水滑石 硼 吸附 Langmuir吸附等温模型 

分 类 号：O647.3[理学—物理化学]