均相催化与多相催化降解甲基橙废水

Research on Treatment to Methyl Orange Wastewater by Homogeneous Catalytic Oxidation and Heterogeneous Catalytic Oxidation

在强氧化剂的存在下,采用多种金属离子对甲基橙废水进行催化氧化,使之降解脱色。结果表明,Fe3+、Cu2+能够有效地催化氧化反应,在20min左右即可使甲基橙脱除率达到99%以上.而Mn2+、Ni2+、pb2+等在实验时间内基本没有催化作用。温度、H2O2用量、以及金属离子用量对催化氧化都有影响,较高的温度可以大大加快反应的速度。80℃下.Fe3+及Cu2+使用量10-4mol,H2O2使用量0.6mL即可达到满意的脱除速率与效率。将Fe3+、Cu2+负载于活性炭上,用负载后的活性炭对甲基橙废水进行处理,同样可以起到催化氧化的作用,并且负载量的大小对催化氧化的效果有所影响。4g活性炭在100mL1%的Fe2(SO4)3及CuSO4溶液中浸溃24h,能够取得最好的催化效果。

The treatment of methyl orange wasterwater by catalytic oxidation with metal ions and activated carbon carrying metal ions was researched, and the reaction effect on various reaction condition was studied. The study results showed that Fe3+ ,Cu2+ have high catalytic activation in the oxidation degradation of methyl orange, but Mn2+ ,Ni2+ ,Pb2 + have few effects. Under the condition of temperature ,80℃ ; the dosage of catatlyst ,10-4mol; the dosage of H2O2, 0.6mL;and the reaction time of Fe3+ and Cu2+ ,20min, the removal afficienciet can reach nearly 100% . Three methods were used to treat carbon to get activated carbon, 4g carbon in 100mL 1% Fe2(SO4)3 及 CuSO4 solution for 24 hour has best catalytic effect.