Prediction of chemical oxygen demand in mature landfill leachate doped with Fenton's reagent, using empirical mathematical model obtained by full factorial design

Química Nova

Salazar, Rodrigo Fernando dos Santos¹  Peixoto, André Luís de Castro¹  Guimarães, Oswaldo Luiz Cobra¹  Izário Filho, Hélcio José¹  Universidade de São Paulo, Lorena, Brasil¹  Brito, Renata Alves de¹ 

关键词: chemical oxygen demand;    inorganic interferences;    design of experiments.;   

DOI  :  10.1590/S0100-40422008000700008

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

COD is an important parameter to estimate the concentration of organic contaminants. The closed system technique with the use of K2Cr2O7 is the most important one, however, it has the inconvenience to suffer positive chemical interferences from inorganic compounds such as Fe2+ and H2O2 (not enough reported in the literature). This paper considers a statistical-experimental set capable to validate a empirical mathematical model generated from a 23 experimental design, in the presence of Fe2+ and H2O2. The t test shows that mathematical model has 99,99999% confidence degree and the experimental validation test indicates absolute mean error of 4,70%.

【 授权许可】

Unknown