孔状植酸锆的制备及其对氟离子的吸附特征  

Preparation of porous zirconium phytate and its adsorbing performance on fluoride ions

作　　者：徐楠[1] 王大鸷[1] 徐同宽[1] 张绍印[1] 

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2016年第4期268-271,共4页Journal of Dalian Polytechnic University

基　　金：辽宁自然科学基金资助项目(201202012);住房和城乡建设部科学技术计划项目(2014-K4-034);大连市科技计划项目(2015A11GX044)

摘　　要：采用稻壳中提取的植酸与氧氯化锆进行沉淀反应,制备了纳米植酸锆孔状吸附剂,并研究了其对水溶液中氟离子的吸附脱除性能。实验结果表明,当溶液pH为6时,植酸锆颗粒对氟离子的吸附能力最大,最大吸附量为0.955mg/g;吸附动力学表明,植酸锆对氟离子的吸附动力学符合伪二级吸附动力学模型,线性相关系数为0.999,植酸锆对氟离子的吸附以化学吸附为主;植酸锆对氟离子的吸附过程符合Freundlich等温吸附模型,线性相关系数为0.942。The zirconium phytate with porous surface was prepared by reacting phytic acid extracted from rice shells with zirconium oxychloride. The adsorbing properties on fluoride ions was studied. The maximum adsorption was 0. 955 mg/g at pH 6. The adsorption kinetics of zirconium phytate could be described by pseudo second-order kinetic model and its linear correlation coefficient was 0. 999. The adsorption process was mainly chemisorption and could meet the Freundlich equation, in which linear correlation coefficient was 0. 942.

关 键 词：稻壳 植酸 植酸锆 氟离子 吸附 

分 类 号：TQ134.12[化学工程—无机化工]