Vértices (Aug 2018)

Analysis of the chlorine consumption for oxidation of the cyanobacteria species Microcystis aeruginosa

  • Júlia Araújo Camargo,
  • Elton Santos Franco,
  • Izabel Cristina Marques,
  • Israel César Santana Júnior,
  • Paulo Henrique Gomes Silva,
  • Núbia Aparecida de Aguilar,
  • Ana Flávia de Assis Ferreira,
  • Bruno Miranda Borges,
  • Ana Luiza Ramalho de Sousa

DOI
https://doi.org/10.19180/1809-2667.v20n22018p213-223
Journal volume & issue
Vol. 20, no. 2
pp. 213 – 223

Abstract

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This study evaluated the chlorine consumption of the Microcystis aeruginosa species present in blooms in water supply sources, since the legislation requires the minimum maintenance of free residual chlorine should be 0.2 mg.L-1 or 2 mg.L-1 of combined residual chlorine and a residue from 3 to 5 mg.L-1 after 7 days. Chlorine gas analyzes were performed in laboratory scale: 8 dosages for 30 minutes and 24 hours tests and 7 dosages for 7 days. The results showed high chlorine consumption, what can be related to by-products formation of chlorination in the water treatment.

Keywords