摘要
利用激光光散射技术,研究了不同条件下Fenton反应中Fe(Ⅲ)水解过程的粒径变化,并和一般铁盐体系中Fe(Ⅲ)水解过程进行了比较.结果表明,Fe(Ⅲ)的水解过程中,粒径变化受水解度B*和铁盐浓度的影响,即B*值愈大,浓度愈高,体系粒径愈大.并且在相同浓度和水解度B*的条件下,Fenton反应生成的Fe(Ⅲ)比一般铁盐的水解聚合迅速,形成的粒径大.对采油废水进行处理的实验结果表明,Fenton体系对有机物的吸附去除效果明显优于常规铁盐体系,这可能与Fenton体系的高水解速率有关.
Laser light scattering were applied to investigate the change of Fe(M) effective diameter (deff) in Fenton reaction. The hydrolysis of Fe(Ⅲ)in Fenton reaction was compared with that of Fe(Ⅲ) in ferric sulfate. The results demonstrated that the Fe (Ⅲ) effective diameter were affected by B * value and the concentration of Fe(Ⅲ)/Fe(Ⅲ) salt: the larger B* value and the higher the concentration, the larger the effective diameter. In addition, Fe (Ⅲ) generated from Fenton reaction had a stronger hydrolysis and aggregation tendency and hydrolyzed more rapidly than that of ferric sulfate at the same B*value and concentration. For treating wastewater produced from oilfield, it can be concluded that Fenton's reaction were more effective in CODCr removal through adsorption than iron sulfate.
出处
《环境化学》
CAS
CSCD
北大核心
2005年第4期361-364,共4页
Environmental Chemistry
基金
国家重大科技专项863项目(2002AA601310)国家自然科学基金(20207013)资助.
