活性炭负载氢氧化镧吸附剂的制备及其吸附性能研究  

Preparation and Adsorption Properties of Lanthanum Hydroxide Adsorbent Supported on Activated Carbon

作　　者：宋小双 郝艳玲[1] 高奇奇 SONG Xiao-shuang;HAO Yan-ling;GAO Qi-qi(School of Chemistry and Chemical Engineering,Lanzhou Jiaotong University,Gansu Lanzhou 730070,China)

机构地区：[1]兰州交通大学化学化工学院,甘肃兰州730070

出　　处：《广州化工》2023年第4期91-93,108,共4页GuangZhou Chemical Industry

摘　　要：采用共沉淀法成功合成了分布均匀的针棒状C-La(OH)3复合材料,以实现水体中磷酸盐的有效去除。通过一系列实验考察了吸附时间、吸附温度、溶液pH和溶液初始浓度对吸附的影响,并通过循环再生实验考查了吸附材料的重复利用性能。结果表明C-La(OH)3对磷酸盐的吸附过程是吸热过程,在25℃条件下吸附量为48.681 mg/g,吸附材料可以循环使用五次,是一种既高效又经济的除磷材料。The needle-rod C-La(OH)_(3) composite was successfully synthesized by co-precipitation method to effectively remove phosphate from water.The effects of adsorption time,adsorption temperature,solution pH and initial concentration on adsorption were investigated by a series of experiments,and the recycling properties of the adsorbed materials were investigated by recycling experiments.The results showed that the adsorption process of C-La(OH)_(3) for phosphate is endothermic,and the adsorption capacity was 48.681 mg/g at 25℃.The adsorbent can be recycled for five times,which was an efficient and economical material for phosphorus removal.

关 键 词：氢氧化镧 吸附剂 磷酸盐 

分 类 号：X703.1[环境科学与工程—环境工程]