环境工程学报2012，Vol.6Issue(7)：2287-2294,8.
FeAlO_x/MMT催化Fenton反应降解高浓度苯酚废水
Degradation of phenol of high concentration by FeAIOx/MMT catalyzed Fenton reaction
摘要
Abstract
Fe/A1 complex oxide supported on montmorillonite （FeAIOx/MMT） was applied in the hetero- geneous catalyzed Fenton reaction for the degradation of phenol solutions of high concentration. The experimental results show that the prepared FeA1Ox/MMT catalysts with the Fe/A1 molar ratio of 0.22 are highly effective for the Fenton reaction and the Fe/A1 complex oxide is confirmed to be supported outside the layer structure of mont- morillonite. Under lower reaction temperatures and higher pH values, an induction period can be observed during which ferric ions are gradually released into the solution from the surface of FeA1OJMMT catalysts. Consequent- ly, the Fenton reaction in the solution is catalyzed by the released ferric ions. On the basis of reaction kinetics data, it is found that the initial concentration of H2 02 , pH value of the solution and the reaction temperature have an overwhelming effect on the degradation efficiency of COD of phenol solutions. The unnecessary self-con- suming of HO ~ due to the coupling between the high reaction temperature and high concentration of H20z can be partially controlled by applying temperature gradient and batch-wise addition of H202. Under the optimized reaction condition, phenol in the wastewater with the initial concentration of 1 g/L can be completely removed, with a high degradation rate of COD of 97% obtained.关键词
Fenton反应/非均相催化/Fe/Al复合氧化物/苯酚Key words
Fenton reaction/heterogeneous catalysis/FeAIOx/MMT/phenol分类
资源环境引用本文复制引用
李晓科,刘颖,柏帆,袁佩青,程振民,袁渭康..FeAlO_x/MMT催化Fenton反应降解高浓度苯酚废水[J].环境工程学报,2012,6(7):2287-2294,8.基金项目
上海市自然科学基金 （）
高校青年教师探索基金 （）
