摘要
研究了铁锰复合氧化物(FeMnO)的界面特性、荷电特征及结构形貌,考察了FeMnO混凝效能,探讨了除污染机理.结果表明,FeMnO以δ-MnO2和氢氧化铁为主要成分,含有丰富的表面羟基,比表面积达146.22m2/g;在纯水体系中的零电荷点pH值约为8.0;FeMnO为尺寸不均的准球型微小颗粒,相互黏附成网状结构.FeMnO混凝使滤后浊度、TOC和UV254的去除率分别达到99.99%、42.25%和68.91%.其混凝除浊、除有机物的机制为吸附架桥、电性中和及网捕卷扫等共同作用的结果.
Interface performance,charge property and structure topography of iron-manganese oxide(FeMnO) are studied.Pollution removal mechanism of the FeMnO are approached.Results show that main compositions of the FeMnO are δ-manganese dioxide and ferric hydroxide.The FeMnO contains with rich hydroxyl.The specific surface area is reached to 146.22 m2/g.Zero charge point of the oxide in pure water is about 8.0 of pH value.The FeMnO particles are quasi-spherical microparticles with irregular sizes adjoined to form net...
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2009年第12期1648-1651,共4页
Journal of Beijing University of Technology
基金
国家自然科学基金资助项目(50678007)
北京市教委科技发展计划项目(KM200610005025)
北京市属市管高校人才强教计划资助项目(05004014200607)
关键词
铁锰复合氧化物
混凝
界面特性
荷电特征
结构形貌
给水处理
iron-aluminum composited oxide
coagulation
interface performance
charge property
structure topography
drinking water treatment
