首页> 中文期刊> 《安徽农业科学》 >Cu2+作用下Fenton氧化处理苯酚废水研究

Cu2+作用下Fenton氧化处理苯酚废水研究

         

摘要

[目的]寻找Cu存在条件下 Fenton 氧化处理苯酚模拟废水的最佳条件.[方法]研究不同浓度 HO、Fe及 pH 下 Cu的存在对 Fenton 氧化处理苯酚模拟废水的苯酚去除率的影响和对 COD 降解效果的影响.[结果]在苯酚浓度为 250 mg/L,最佳 pH 为 3.0,HO浓度为 297.5 mg/L,Fe浓度为 140 mg/L 时,苯酚的最高去除率为 94.5%;在此条件下,Cu浓度为 40 mg/L 时,苯酚最高去除率为 97.7%,提高了 3.2%.在 pH3.0、Cu浓度 40mg/L 条件下,分别求得不同 Fe/HO下的模型备件参数,结果表明 Fenton 氧化降解苯酚废水符合二级降解动力学反应模型.[结论]适当浓度的Cu可提高 Fenton 氧化降解苯酚废水的效率.Fenton 氧化降解苯酚废水符合二级降解动力学反应模型.%[ Objective ] The aim of the study was to seek an optuim appropriate factors for treating oxidizing phenol wastewater by Fenton's reagent under the existing Cu2+. [ Method] The effect of Cu2+ on removal rate of oxidizing phenol and the effect of degratation of COD by Fenton 's reagent under different concentrations Fe2+ , H2O2 and pH were studied. [ Result] 94.5% phenol could be removed from the wastewater when the optimum pH value 3.0, H2O2 concentration 297.5 mg/L, Fe2+ concentration 140 mg/L were applied. Above the conditions, phenol removal rate could be reach 97.7% when 40 mg/L Cu2+ was added, increasing by 3.2%. When the optimum pH value was 3. 0, and Cu2+was 40 mg/L ,the model parameters at different Fe2+/H2O2 ratios were calculated, it showed that the process fitted two-step kinetic model.[ Conclusion] The appropriate Cu2+ could improve the degradation efficiency of phenol in the wastewater. The Fentonprocess fitted two-step ki

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