Abstract

GARCES GIRALDO, Luis Fernando. Degradation and mineralization of waters with Red Novactive F6BS analyzed with response surfaces. Rev. P+L [online]. 2012, vol.7, n.2, pp.20-35. ISSN 1909-0455.

Introduction. The classic elimination methods used for textile dyes are not useful due to the fact that partial oxidation or mineralization can generate highly toxic by-products. A great quantity of the dyes is not directly toxic for living organisms, but their presence must be controlled because the coloring on the discharge media can suppress photosynthesis in water. Objective. To select the optimal photo sensitizer and oxidation agent quantities too degrade red Novactive F6BS analyzed with surface responses. Materials and methods. A 60 Hz MIGTHY PURE ultra violet lamp was used, along with a glass bucket with 15L of the simple. This sample was re-circulated with a pump which had a 0.047 L/s flow. Results. The best results obtained for the red Novactive F6BS were 76.2% of degradation and 49.4% of mineralization in two hours, with the E7 test (60 mg/L de FeCl₃ and 1 mL/L of H₂O₂). Conclusions. The dye is more rapidly degraded and mineralized with FeCl₃; This took place in the E7 test (60 mg/L FeCl₃ and 1.0 mL/L of H₂O₂).

Keywords : photodegradation; textile dyes; red Novactive; mineralization.

        · abstract in Portuguese | Spanish     · text in Portuguese     · Portuguese ( pdf )