Fe(Ⅲ,Ⅱ)/H_2O_2体系中Fe(Ⅲ)水解特征的对比

Fe(Ⅲ) hydrolyzing characteristics in Fenton and Fenton-like processes using Ferron assay

利用Fe Ferron逐时络合比色法对类Fenton与Fenton体系中Fe(Ⅲ )水解形态的转化规律进行了比较 .结果表明 ,水解度越高 ,两体系中Fe(Ⅲ )的水解速度也越快 ,但水解度相同时 ,与Fenton体系相比 ,类Fenton反应生成的Fe(Ⅲ )的水解速率要低 ,且Feb 所占比例也较少 .与Fenton体系一致 ,类Fenton体系中的Fe(Ⅲ )水解速率随H2 O2

Fe(Ⅲ) hydrolyzing characteristics in Fenton and Fenton-like processes was investigated using Ferron assay. It was found that the Fe(Ⅲ) hydrolyzing rates increased with the increase of formation function in both the Fenton system and Fenton-like system. Under the same formation function, however, both the Fe(Ⅲ) hydrolyzing rate and the ratio of Fe-b in Fenton-like system were markedly lower than that in Fenton system. Similar with that in Fenton system, the Fe(Ⅲ) hydrolyzing rate in Fenton-like system decreased with the increase of H_2O_2 concentration.