Predição da demanda química de oxigênio em chorume maduro contendo reagente de Fenton, por meio de modelo matemático empírico gerado com planejamento fatorial completo

Química Nova

André Luís De Castro Peixoto¹  Renata Alves De Brito¹  Rodrigo Fernando Dos Santos Salazar¹  Oswaldo Luiz Cobra Guimarães¹  Hélcio José Izário Filho¹ 

[1] ,Universidade de São Paulo Escola de Engenharia de Lorena Departamento de Engenharia QuímicaLorena SP ,Brasil

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

DOI  :  10.1590/S0100-40422008000700008

来源: SciELO

【 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】

CC BY-NC   
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