论文部分内容阅读
在分析Fenton氧化法作用机理的基础上,研究了金属催化剂Fe~(2+)/Fe~(3+)对Fenton试剂活性的影响。结果表明:Fe~(2+)和Fe~(3+)对Fenton试剂活性均具有催化作用,Fe~(2+)催化作用远大于Fe~(3+)催化作用;在H_2O_2投加量为12 mmol/L,反应温度为25℃,反应时间为25 min条件下,[Fe~(2+)]/[H_2O_2]的物质的量比为1∶10时,焦化含酚废水COD去除率最高达到90.2%(质量分数);在光照特别是紫外线协同作用下,Fe~(2+)和Fe~(3+)活性增大,且Fe~(3+)的活性增强趋势明显高于Fe~(2+)。
Based on the analysis of the mechanism of Fenton oxidation, the effect of Fe ~ (2 +) / Fe ~ (3+) on the activity of Fenton reagent was studied. The results showed that both Fe 2+ and Fe 3+ catalyzed the activity of Fenton reagent. The catalytic effect of Fe 2+ was much greater than that of Fe 3+. When the dosage of H 2 O 2 was 12 mmol / L, the reaction temperature was 25 ℃, the reaction time was 25 min, the ratio of [Fe 2 +] / [H 2 O 2] was 1:10, the COD removal efficiency of coking wastewater was the highest Reached 90.2% (mass fraction). The activities of Fe 2+ and Fe 3+ increased with the irradiation of UV light, and the activity of Fe 3+ increased obviously. (2+).