高Al_(13)纳米聚合氯化铝的结构表征及混凝效果  

Structure characterization and coagulation effect of nano-sized poly-aluminum-chloride with high content of Al_(13) species.

作　　者：高宝玉[1] 岳钦艳[1] 王炳建[1] 初永宝[1] 

机构地区：[1]山东大学环境科学与工程学院,山东济南250100

出　　处：《中国环境科学》2003年第6期657-660,共4页China Environmental Science

基　　金：国家"863"子课题(2002AA601290-5);山东省自然科学基金资助项目(Y2002B03)

摘　　要：采用AlCl3·6H2O和Na2CO3制备了聚合氯化铝(PAC),并采用SO2-4/Ba2+沉淀-置换法分离提纯了其中的纳米Al13形态,应用27Al-NMR和XRD等现代实验技术对其中的Al13形态进行了分析表征,27Al-NMR结果表明,分离提纯后样品中的Al13含量明显高于PAC,XRD结果表明,Al13的衍射峰出现在2θ角为5～25°之间;混凝烧杯实验表明,纳米级PAC较传统的混凝剂AlCl3、Al2(SO4)3和PAC具有更好的除浊、脱色效果.The poly-aluminum-chloride (PAC) was prepared with adoption of AlCl36H2O and Na2CO3. The Al13 species form in PAC was separated and purified with adoption of SO42-/Ba2+ deposition-replacement technique; and the characterization of Al13 form was made with application of modern techniques of 27Al-NMR and XRD. 27Al-NMR results showed that the Al13 content in the separated and purified, sample was higher markedly then PAC XRD results showed that the diffraction peak of Al13 appeared in the range of 2q from 5 to 25. The coagulation beaker test showed that compared with traditional coagulants PAC, AlCl3 and Al2(SO4)3, the nano-sized PAC possessed better effect of turbidity and color removals.

关 键 词：聚合氯化铝 AL13 分离提纯 分析表征 混凝效果 

分 类 号：X703.5[环境科学与工程—环境工程]