聚磷硫酸铁的形貌结构与絮凝机理  

Topography Structure and Flocculation Mechanism of Polymeric Phosphate Ferric Sulfate(PPFS)

作　　者：郑怀礼[1] 张会琴[1] 蒋绍阶[1] 李方[2] 焦世珺[1] 房慧丽[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]四川大学化学学院,四川成都610064

出　　处：《光谱学与光谱分析》2011年第5期1409-1413,共5页Spectroscopy and Spectral Analysis

基　　金：国家水体污染控制与治理科技重大专项项目(2009ZX07424-004);国家自然科学基金项目(20777095);重庆市工业发展资金项目(产研专项)资助

摘　　要：采用红外(FTIR)、X射线衍射(XRD),确定了聚磷硫酸铁(PPFS)的结构组成,PPFS是一种高电荷的多羟基多核络合物,电镜扫描(SEM)表征分析,PPFS具有簇状类珊瑚礁立体网状的形貌结构;混凝烧杯试验说明,PPFS在絮凝时不是以电中和机理为主,吸附架桥和网捕卷扫作用才是它具有优异混凝效果的主要原因,zeta电位值证实了该推测。PPFS的絮凝机理可能是:电中和作用能有效地降低水中胶体的ζ电位致使胶体脱稳,之后PPFS发挥吸附架桥作用、网捕及卷扫作用最终有效地去除污水中的各种物质,所以PPFS是电中和、吸附架桥和网捕卷扫几种作用的综合体现。Characteristics of polymeric phosphate ferric sulfate（PPFS） were investigated using FTIR（Fourier transform infrared spectrometer）,XRD（X-ray diffraction） and SEM（scanning electron microscope） in the present study.The formed PPFS structure and morphology were stereo meshwork,which was clustered and close to coral reef,synthesis of high charge density,bioactive polyhydroxy and mixed polynuclear complex PPFS.The results showed that charge neutralization of PPFS had not played a decisive role in the coagulation beaker test and the zeta potential proved that PPFS was largely affected by bridging and netting sweep.Therefore,the coagulation mechanisms of PPFS were mainly composed of charge neutralization,adsorption bridging and netting sweep mechanisms.

关 键 词：聚磷硫酸铁 形貌结构 絮凝机理 ZETA电位 

分 类 号：X703[环境科学与工程—环境工程] O643[理学—物理化学]