Degradation of 2,4-dichlorophenol in aqueous solution by sono-Fenton method
Degradation of 2,4-dichlorophenol in aqueous solution by sono-Fenton method
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声-Fenton法降解水溶液中2,4-二氯苯酚
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
Chang
中科院分区：
文献类型：
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作者：
P. Ranjit;K. Palanivelu;Chang
本研究介绍了 Sono-Fenton 工艺降解 2,4-二氯苯酚 (DCP) 的结果。研究了 H2O2、Fe2+ 和 pH 等对 Sono-Fenton 工艺有影响的参数。与 Fenton 法相比，Sono-Fenton 法是 DCP 降解效率最好的一种方法。使用传统 Fenton 法降解 DCP 的最佳浓度为在 pH 2.5 时 Fe2+ 20 mg/L 和 H2O2 580 mg/L。就 Sono-Fenton 而言，最佳浓度为 10 mg/L Fe2+ 和 400 mg/L H2O2（pH 2.5）。 Sono-Fenton 方法导致所需的 Fe2+ 浓度 (50%) 和 H2O2 浓度 (31%) 降低。此外，该方法即使在pH 5.0下也适用，DCP的降解效率为77.6%。 DCP降解动力学研究表明，DCP的降解遵循伪一级反应，速率常数为7×10−4 min−1。
This study presents the results of the Sono-Fenton process for the degradation of 2,4-dichlorophenol (DCP). The influential parameters such as H2O2, Fe2+ and pH for the Sono-Fenton process were investigated. Sono-Fenton method was found to be the best one for degradation efficiency of DCP when compared with that of the Fenton process. The optimum concentrations for the degradation of DCP using conventional Fenton’s method were found to be 20 mg/L of Fe2+ and 580 mg/L of H2O2 at pH 2.5. In the case of Sono-Fenton, the optimal concentrations were found to be 10 mg/L of Fe2+ and 400 mg/L of H2O2 at pH 2.5. Sono-Fenton method resulted in the reduction of required Fe2+ concentration (50%) and H2O2 concentration (31%). In addition, this method could be applicable even at pH 5.0 and a degradation efficiency of DCP was 77.6%. Kinetic studies for the degradation of DCP proved that the degradation of DCP tends to follow pseudo first order reaction and the rate constant was found to be 7 × 10−4 min−1.