Data/hora: 01/06/2024 18:07:33

Provedor de dados: | 65
País: | Brazil
Título: | The efficiency of electrocoagulation using aluminum electrodesin treating wastewater from a dairy industry
Autores: | Valente,Gerson de Freitas Silva; Mendonça,Regina Célia Santos; Pereira,José Antônio Marques.
Data: | 2015-09-01
Ano: | 2015
Palavras-chave: | Electrolysis; Dairy industry; Electrocoagulation.
Resumo: | This research deals with the investigation of electrocoagulation (EC) treatment of wastewater from a dairy plant using aluminum electrodes. Electrolysis time, pH, current density and distance between electrodes were considered to assess the removal efficiency of chemical oxygen demand (COD), total solids (TS) and their fractions and turbidity. Samples were collected from the effluent of a dairy plant using a sampling methodology proportional to the flow. The treatments were applied according to design factorial of half fraction with two levels of treatments and 3 repetitions at the central point. The optimization of parameters for treating dairy industry effluent by electrocoagulation using aluminum electrodes showed that electric current application for 21 minutes, an initial sample pH near 5.0 and a current density of 61.6A m-2 resulted in a significant reduction in COD by 57%; removal of turbidity by 99%, removal of total suspended solids by 92% and volatile suspended solids by 97%; and a final treated effluent pH of approximately 10. Optimum operating condition was used for cost calculations show that operating cost is approximately 3.48R$ m-3.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901713
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20141172
Formato: | text/html
Fonte: | Ciência Rural  v.45 n.9 2015
Fonte: | info:eu-repo/semantics/openAccess