聚硅硫酸铁(PFSS)絮凝剂的特性及絮体动态生长过程  

Specific Properties of Polymeric Ferric Silicate-sulfate(PFSS) Coagulant and Its Dynamic Process of Flocculation

作　　者：黄青[1] 胡小娟[2] 

机构地区：[1]武汉科技大学耐火材料与高温陶瓷国家重点实验室培育基地,湖北武汉430081 [2]华中科技大学化学与化工学院,湖北武汉430074

出　　处：《广东化工》2012年第5期27-29,共3页Guangdong Chemical Industry

摘　　要：文章以Fe2(SO4)3和Na2SiO3为原料,在不同Fe/Si摩尔比的条件下,采用复合法制备了聚硅硫酸铁(PFSS)絮凝剂,并考察了PFSS对腐殖酸的去除效果。分别采用显微镜观察分析了不同Fe/Si摩尔比PFSS絮凝剂及其形成絮体的形貌,采用Zeta电位分析仪测定了Fe3+的引入分枝数也增多。此外,引入的Fe3+有助于提高PFSS絮凝剂的电中和能力。PFSS絮凝剂形成絮体的粒径随着硅含量增加而增大。In the paper,polymeric ferric silicate-sulfate（PFSS） flocculant was synthesized by using Fe2（SO4）3 and Na2SiO3 as the main raw material.And the removal efficiency of humic acid by PFSS flocculants were investigated with different Fe/Si molar ratio.Besides,PFSS flocculants with various molar ratio of Fe to Si were observed under a microscope.The influence of Fe3＋ to the Zeta potential of flocculating by PFSS flocculant was determined by Zeta potentiometric analyzer.And the flocs forming during the coagulation process was examined by laser granularity analyzer.The results showed that Fe/Si molar ratio pose great influence on the morphology of PFSS flocculant.The shape of PFSS flocculant gradually transformed rounder with the increase of Fe3＋ while PFSS flocculant was with more thick branches with increase of Si.Moreover,the charge-neutraliziton ability of PFSS flocculant were improved by introducing Fe3＋.The floc size formed by PFSS flocculant increased with the increase of silicon.

关 键 词：聚硅硫酸铁 形貌结构 絮体粒度 絮凝性能 

分 类 号：TQ[化学工程]