硼改性聚硅酸铝钛的制备及絮凝性能研究  

Preparation and Flocculation Properties of Boron Modified Polysilicate Aluminium Titanate

作　　者：李玉莹 张浩[1] 王希越[1] 马捷 连丽丽[1] 娄大伟[1] LI Yu-ying;ZHANG Hao;WANG Xi-yue;MA Jie;LIAN Li-li;LOU Da-wei(School of Chemistry and Pharmaceutical Engineering,Jilin Institute of Chemical Technology,Jilin 132022,China)

机构地区：[1]吉林化工学院化学与制药工程学院,吉林吉林132022

出　　处：《化学试剂》2020年第8期921-925,共5页Chemical Reagents

基　　金：吉林省科技发展计划项目(20190303116SF);吉林省自然科学基金资助项目(20180101292JC);吉林市科技创新发展计划项目(20190104158)。

摘　　要：以硅酸钠、硫酸铝、硫酸钛、四硼酸钠为原料制备了无机高分子絮凝剂硼改性聚硅酸铝钛(B-PSATi)。以高岭土-腐植酸钠配制模拟水样,通过单因素实验确定了最佳制备条件,在pH 2.5、n(Al+Ti)∶n(Si)=0.6、n(Al)∶n(Ti)=8∶2、n(B)∶n(Si)=0.05时,B-PSATi絮凝剂对模拟水样的絮凝效果最佳,浊度去除率和色度去除率可达97.56%和98.08%。通过XRD、SEM及EDS能谱对其结构进行了表征。结果表明,B-PSATi絮凝剂是一种结构紧实的无定形聚合物。对B-PSATi的絮凝条件进行了优化,其最佳絮凝剂剂量为0.5 mL/L,最佳pH 7~9。An inorganic polymer flocculant boron modified polysilicate aluminum titanate(B-PSATi)was prepared with sodium silicate,aluminum sulfate,titanium sulfate and sodium tetraborate as raw materials.Taking kaolin-sodium humate as simulated water,the optimum preparation conditions were determined by single factor experiments.When pH 2.5,n(Al+Ti)∶n(Si)=0.6,n(Al)∶n(Ti)=8∶2,n(B)∶n(Si)=0.05,the prepared B-PSATi exhibited the best flocculation performance with turbidity and color removal efficiency of 97.56%and 98.08%,respectively.The flocculant was characterized by XRD,SEM and EDS.The prepared B-PSATi was an amorphous polymer with tight structure.The flocculation conditions of B-PSATi were optimized and the dosage of flocculation was 0.5 mL/L with pH 7~9.

关 键 词：硼改性 钛盐 聚硅酸铝 无机高分子絮凝剂 去除率 

分 类 号：TQ421[化学工程]