CaTiO3 Perovskite in the Photocatalysis of Textile Wastewater

  • Ana Maria Ferrari Universidade Tecnológica Federal do Paraná (UTFPR), Apucarana, PR, Brasil Programa de Pós-Graduação em Engenharia Ambiental (PPGEA).
  • Talitha Oliveira Germiniano Universidade Tecnológica Federal do Paraná (UTFPR), Apucarana, PR, Brasil Programa de Pós-Graduação em Engenharia Ambiental (PPGEA).
  • Jaqueline Elisabete Savoia Universidade Tecnológica Federal do Paraná (UTFPR), Apucarana, PR, Brasil Coordenação de Engenharia Química.
  • Rubiane Ganascim Marques Universidade Tecnológica Federal do Paraná (UTFPR), Apucarana, PR, Brasil Programa de Pós-Graduação em Engenharia Ambiental (PPGEA).
  • Valquíria Aparecida dos Santos Ribeiro Universidade Tecnológica Federal do Paraná (UTFPR), Apucarana, PR, Brasil Coordenação de Engenharia Têxtil.
  • Ana Cláudia Ueda Universidade Tecnológica Federal do Paraná (UTFPR), Apucarana, PR, Brasil Programa de Pós-Graduação em Engenharia Ambiental (PPGEA).
DOI: https://doi.org/10.4136/ambi-agua.2336
Keywords: calcium titanate, dye, photocatalyst, real wastewater, response surface analysis.

Abstract

Perovskite-type CaTiO3 material was synthesized by the polymeric precursor method and characterized. The powder was applied as a promising alternative to TiO2 photocatalyst. Photocatalytic reaction parameters were optimized by surface analysis methodology on the degradation of methylene blue under UV radiation. After optimization, complex textile- and tannery wastewaters were treated and the COD reduction was evaluated. At optimized conditions (pH=11.2 and 1 g L-1 of catalyst concentration), the results obtained for the photodegradation of the real wastewater after 240 min of irradiation were 45% COD reduction for both effluents. The reactions were adjusted to the pseudo first order kinetic and the rate constants were 2.07 x 10-3 (min-1) and 2.23 x 10- 3 (min-1) for COD reduction for textile- and tannery wastewaters, respectively.


Published
20/05/2019
Issue
Vol. 14 No. 3 (2019)
Section
Papers

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