催化芬顿氧化处理苯酚废水

通过在Fenton体系中加入新型催化剂OR-SON，研究其催化Fenton反应的效果并探究其催化Fenton技术的原理。研究不同pH条件下OR-SON的催化特性，得出不同条件下其催化H2O2分解和催化Fenton反应降解苯酚的效果。结果发现，当pH=3时，OR-SON对Fenton反应有较强的催化能力，使H2O2的分解率提高了60%。同样在酸性条件下，OR-SON催化Fenton反应对苯酚的去除比Fenton反应更快速，去除率达到95%。当pH=7时，苯酚去除率仅为14.8%。自由基抑制实验表明，·OH是OR-SON催化Fenton反应的主要活性产物。说明在酸性条件下OR-SON强化Fe2+和Fe3+的循环，使得Fe2+能不断地催化H2O2产生·OH，提高了H2O2分解效率，同时提高了苯酚的去除率。

Catalytic Fenton oxidation process for phenol wastewater

The catalytic effectiveness and catalytic mechanism of OR-SON were studied using a Fenton system. The decomposition of H2O2 and removal of phenol were examined under different pH values. The results revealed that the catalytic efficacy of the Fenton system with added OR-SON was highest at pH 3, the H2O2 decomposition ratio of the Fenton reaction was 60% higher than the corresponding value obtained in the absence of OR-SON. At the same time, the removal of phenol was faster, and the removal rate reached 95%. When the pH was 7, the removal rate was only 14.8%. The free radical inhibition test showed that ·OH was the main product of the Fenton reaction catalyzed by OR-SON. Under acidic conditions, OR-SON strengthened the Fe2+/Fe3+ cycle. As a result, Fe2+ could continue to catalyze H2O2 to generate ·OH, improving both the H2O2 decomposition efficiency and the phenol removal rate.