摘要
本文研究了四种不同铁盐[Fe(ClO4)3、Fe(NO3)3、FeCl3和Fe2(SO4)3]在紫外光照射下的光解对水溶性染料溶液的脱色作用。在pH=3的混合溶液中,不同阴离子铁盐对染料溶液光化学脱色速率的大小顺序的一般规律为NO-3>Cl-≈ClO-4>SO2-4。对NO-3自身光解对水溶性染料溶液的脱色作用作了进一步研究。
The effect of inorganic anion on photochemical discoloration of five dyes, C. I. reactive red 2, C. I. reactive blue 4, C. I. reactive black 8, C. I. basic red 13 and C. I. basic yellow 2, were studied in a UV light /Fe(Ⅲ)-hydroxy complex system. Different inorganic anion coexisting with Fe3+ resulted in different photochemical discoloration rates of the dyes in the aqueous solutions at pH 3.0. The general rule is NO-3 >Cl-≈ClO-4>SO2-4. The effect of NO-3 which also has an photoactivity was investigated specially in detail.
出处
《水处理技术》
CAS
CSCD
1998年第3期157-161,共5页
Technology of Water Treatment
关键词
铁盐
光解
染料
脱色
废水处理
Fe(Ⅲ)salt, photolysis, dye, discolouration