Application of Fenton oxidation to cosmetic wastewaters treatment

被引:254
作者
Bautista, P. [1 ]
Mohedano, A. F. [1 ]
Gilarranz, M. A. [1 ]
Casas, J. A. [1 ]
Rodriguez, J. J. [1 ]
机构
[1] Univ Autonoma Madrid, E-28049 Madrid, Spain
关键词
Fenton's reagent; oxidation; cosmetic wastewater; kinetics;
D O I
10.1016/j.jhazmat.2006.09.004
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The removal of organic matter (TOC and COD) from a cosmetic wastewater by Fenton oxidation treatment has been evaluated. The operating conditions (temperature as well as ferrous ion and hydrogen peroxide dosage) have been optimized. Working at an initial pH equal to 3.0, a Fe2+ concentration of 200 mg/L and a H2O2 concentration to COD initial weight ratio corresponding to the theoretical stoichiometric value (2.12), a TOC conversion higher than 45% at 25 degrees C and 60% at 50 degrees C was achieved. Application of the Fenton oxidation process allows to reach the COD regional limit for industrial wastewaters discharges to the municipal sewer system. A simple kinetic analysis based on TOC was carried out. A second-order equation describes well the overall kinetics of the process within a wide TOC conversion range covering up to the 80-90% of the maximum achievable conversion. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:128 / 134
页数:7
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