Use of ozone for contaminated water treatment with dyes

Authors

  • Jordana Alves da Cunha Silva Universidade Federal de São João del Rei
  • Lídia Garcia Rosa Universidade Federal de São João del Rei
  • Ludimila Thaís Alves Universidade Federal de São João del Rei
  • Almir Silva Neto Centro Federal de Educação Tecnológica de Minas Gerais
  • Andrei Ramos Oliveira técnico em eletrotécnica
  • Jorge David Alguiar Bellido Universidade Federal de São João del Rei
  • Marcelo da Silva Batista Universidade Federal de São João del Rei

DOI:

https://doi.org/10.18316/rca.v15i1.3986

Keywords:

Dyes, Ozone, AOP, Effluent Treatment.

Abstract

Ozone is a powerful oxidizing agent which can be used for the treatment of effluents with dyes from the textile industry. This study was evaluated the percentage of decolorization and degradation of solutions containing 10 mg/L methyl orange, 10 mg/L methylene blue, and 10 mg/L malachite green using bubbling ozone. For this, it was built an air ozonation system with a power of 30 W based on the corona effect. The results showed that the ozonation system was very efficient for decolorization (> 96%) of solutions of methyl orange, methylene blue, and malachite green. The effect of the airflow variation (2.5-7.5 mL/min) at the inlet of the ozonator showed that the discoloration increased with increasing flow. However, after one hour no significant difference in color removal was observed. The COD results showed degradation of 99% of methylene blue and 40% of methyl orange.

Author Biographies

Jordana Alves da Cunha Silva, Universidade Federal de São João del Rei

Graduação em Engenharia Química

Lídia Garcia Rosa, Universidade Federal de São João del Rei

Graduação em Engenharia Química

Ludimila Thaís Alves, Universidade Federal de São João del Rei

Graduação em Engenharia Química

Almir Silva Neto, Centro Federal de Educação Tecnológica de Minas Gerais

Professor Campus Timóteo, MG, Brasil

Andrei Ramos Oliveira, técnico em eletrotécnica

Universidade Federal de São João del Rei

Jorge David Alguiar Bellido, Universidade Federal de São João del Rei

Professor Associado I do Departamento de Engenharia Química da Universidade Federal de São João del Rei

Marcelo da Silva Batista, Universidade Federal de São João del Rei

Doutorado em Engenharia Química - UFSCar

Professor Associado III do Departamento de Engenharia Química da Universidade Federal de São João del Rei

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Published

2021-04-27

Issue

Vol. 15 No. 1 (2021)

Section

Artigos

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