焙烧类水滑石–改性杭锦凹凸棒黏土复合物的制备及其除氟性能研究  

Preparation and Fluoride Removal Performance of Layered Double Oxides-Hangjin Attapulgite Clay Composite

作　　者：李月凌 王奖[1] 

机构地区：[1]内蒙古师范大学化学与环境科学学院,内蒙古 呼和浩特

出　　处：《材料科学》2024年第6期975-982,共8页Material Sciences

摘　　要：以草酸和盐酸酸化杭锦凹凸棒黏土及其酸浸废液为主要原料,利用原位共沉淀–焙烧法制备焙烧类水滑石–改性杭锦凹凸棒黏土复合物(LDO-Clay)。优选原料为草酸酸浸废液和盐酸酸化土,制备不同LDO掺杂量的LDO-Clay。表征结果表明,复合物中LDO与Clay均匀复合。研究LDO掺杂量、除氟剂用量对LDO-Clay复合物除氟性能的影响。结果表明,50% LDO-Clay除氟性能最佳,最佳用量0.2 g,对初始浓度为10 mg/L的F−溶液的除氟率为70%。The layered double oxides and modified Hangjin Attapulgite clay composite (LDO-Clay) were prepared by in-situ co-precipitation-calcination method, using oxalic acid and hydrochloric acid acidified Hangjin attapulgite and its acid leaching wastewater as the main raw materials. The preferred raw materials are oxalic acid leaching wastewater and hydrochloric acid acidified clay, then the LDO-Clay composites with different LDO amounts were prepared. The characterization results showed that LDO and Clay were uniformly compounded. The effects of LDO amount and dosage on the adsorption performance of LDO-Clay composites were studied. The results showed that 50% LDO-Clay had the best adsorption performance, and the optimal dosage was 0.2 g. The removal efficiency of F− solution with the initial concentration of 10 mg/L was 70%.

关 键 词：类水滑石 凹凸棒黏土 吸附 氟离子 

分 类 号：TM4[电气工程—电器]