Avaliação do processo de tratamento de chorume do aterro sanitário de Jardim Gramacho utilizando a técnica de Eletro-Fenton

• Autor(a) principal: Teixeira, Alan de Oliveira
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/15747
• topic: Leachate; landfill; electrocoagulation; fenton; electro-fenton; AC; Chorume; aterro sanitário; eletrocoagulação; fenton; eletro-fenton; corrente alternada; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ANALITICA::ANALISE DE TRACOS E QUIMICA AMBIENTAL

This paper compares the use of electrolytic treatment and electro-Fenton treatment in AC in the leachate from the landfill Gramacho in the state of Rio de Janeiro. The electrolytic treatment consists of using Fe electrodes in contact with electricity, which in proper pH, undergo dissolution forming the coagulating agent "in situ".Electro-Fenton treatment consists in generating a component of Fenton's reagent by the electrolytic method.In this work Fenton's reagent is formed by iron ions generated by electrolytic treatment by joining the 30% hydrogen peroxide added externally. Samples of leachate were characterized by the parameters pH, conductivity, salinity, temperature, turbidity, total dissolved solids (TDS) and Chemical oxygen demand (COD). The use of electrolytic treatment only showed results for COD and color removal. To ensure better performance in the removal of COD and color and find values for turbidity removal was necessary to use the Electro-Fenton treatment. Some parameters are important in this technique, such as pH, measurement of peroxide, current intensity and time reacional. The results obtained for the COD removal, color and turbidity were respectively 74%, 95% and 95% in operating conditions: pH 4, the dosage of 5 mL of hydrogen peroxide 30%, electric current of 2A and reaction time of 30 minutes.The Electro-Fenton treatment was more favorable, because the electrolytic treatment under the same operating conditions, only presented results of COD removal wich was 56%, even though was the energy consumption the same for both cases (0.6 k W h m -3)