微波辐射降解水中高浓度有机物的H_2O_2综合反应体系研究

Researchs on the H_2O_2 Reaction Systems to Degradation of Organics in Water Under Microwave Radiation

以1.0 g苯酚溶于1 000 mL无酚水中作为高浓度的有机物模拟水样组成反应模型,在微波辐射下研究了H2O2综合反应体系H2O2/TiO2;H2O2/Fe2+;H2O2/活性炭;H2O2,Fe2+/活性炭对水中高浓度苯酚的降解作用,实验测量了H2O2在不同体系中的分解速率,并测量苯酚在这些体系中的分解速率和有机物耗氧量(CODCr)去除率.实验表明H2O2所在体系的分解速率和苯酚的分解速率依次为H2O2,Fe2+/活性炭>H2O2/Fe2+>H2O2/活性炭>H2O2/TiO2.而体系H2O2/活性炭由于活性炭在微波辐射下有较强的氧化协同作用,该体系对有机物COD呈现出很高的去除率.

Taking,as a model,the waste water composed of 1.0 g phenol in 1 000 mL solution, the study investigated the effect of the H2O2 reaction systems that can be composed respectively by H2O2/TiO2 ;H2O2/Fe^2＋ ;H2O2/activated charcoal;H2O2 ,Fe^2＋ / activated charcoal on the degradation of phenol in water under microwave radiation, determined the decomposition rate of H2O2 and phenol in these systems, and measured CODCr in water. Results show the decomposition rate of H2O2 and phenol in these systems is H2O2, Fe^2＋/ activated charcoal 〉 H2O2/Fe^2＋ 〉 H2O2/activated charcoal 〉 H2 O2/TiO2 respectively. COD in H2O2/activated charcoal systems show a high removal ratio as activated charcoal assisted reaction under microwave radiation.