摘要
Cr( )是一种常见的有毒重金属离子。本文初步研究了Cr( )的Fe( )-OH光还原过程。Fe( )化合物在高压汞灯(125W)的照射下能使Cr( )还原。Cr( )初始浓度在10～200μmol/L时,还原率随初始浓度增大而降低。在pH=2.5～3.0时Cr( )的还原效率较佳。Fe( )化合物的初始浓度对反应也有明显的影响。
Cr(Ⅵ) is a common toxic heavy metalion. In this paper, the photochemical reduction process of Cr(Ⅵ) by Fe(Ⅲ)-OH is studied. Under the radiatin of high pressure mercury lamp(125W), Fe(Ⅲ) compound enables Cr(Ⅵ) to be reduced. When the beginning concentration of Cr(Ⅵ) being within 10-200μmol/L, the reduction rate lowers with the increases of the beginning concenlration. Its reduction rate is higher at pH 2.5～3.0; the beginning concentration of Fe(Ⅲ) compound also has obvious influence on the reaction.
出处
《水处理技术》
CAS
CSCD
北大核心
2003年第4期215-217,221,共4页
Technology of Water Treatment
