Fe/活性炭多相类Fenton法湿式氧化罗丹明B废水的研究

Degradation of rhodamine-B wastewater by heterogeneous Fenton-like reaction using active carbon-Fe

采用自制的Fe/活性炭(Fe/AC)为催化剂,H2O2为氧化剂,组成多相类Fenton试剂催化降解罗丹明B染料废水。实验结果表明,在催化剂加入量为0.8 g/L,H2O2体积分数为0.3%,废水pH值为13,反应时间为30 min的条件下,质量浓度为200 mg/L的罗丹明B染料废水的脱色率达100%。反应动力学研究表明,罗丹明B脱色反应近似为一级反应,30℃时反应速率常数为0.02675 min-1,表观活化能为69.47 kJ/mol。

Catalytic degradation of simulated rhodamine-B wastewater was investigated by using self-synthe- sized active carbon-Fe（Fe/AC） heterogeneous Fenton like reagent wet hydrogen peroxide oxidation. The results indicate that the decoloration rate of rhodamine B（200 mg/L） reach 100% in the presence of Fe/AC（0. 8 g/L） and hydrogen peroxide （0.3%） at pH value 13 after 30 minutes at normal temperature and pressure. Kinetic studies of the degradation reaction show that the decoloration rate of rhodamine B nearly follows the first-order reaction. The reaction constant and activity energy are 0. 02675 min^-1 and 69.47 kJ/mol at 30℃ respectively.