Abstract (EN):
The oxidation of organic compounds and color removal of a synthetic dyeing effluent when treated with a combination
of Fenton¿s Reagent and biological oxidation in a sequencing batch reactor was evaluated in this work. A central
composite design approach was used to find the best conditions of temperature, hydrogen peroxide and ferrous ion
concentrations that maximize color and dissolved organic carbon removal and increase the biodegradability of the
effluent submitted Fenton¿s oxidation. Additional studies on the biological oxidation of the raw and previously treated
by Fenton oxidation effluent had been performed up to steady-state. Higher efficiencies were obtained when coupling a
pre-oxidation stage with Fenton¿s Reagent to the biological process, but conditions employed in the first process must
be carefully selected. In particular, the chemical oxidation was focused in conditions that maximize the increase in the
biodegradability, allowing achieving overall removals of 90.2, 97.3 and 96.1 % for DOC, BOD5 and color, respectively.
Idioma:
Inglês
Tipo (Avaliação Docente):
Científica
Notas:
CD: N38, 6 págs. (comunicação oral)
Nº de páginas:
6
Tipo de Licença: