Produção Nacional
Revisado por pares
Treatment of dye bearing effluents from Brazilian agate industry
2000; Elsevier BV; Linguagem: Inglês
10.1016/s0167-4528(00)80100-3
ISSN2352-2801
AutoresÉlvis Carissimi, Tânia Mara Pizzolato, Alana Neto Zoch, Clóvia Marozzin Mistura, Ênio Leandro Machado, Ivo Schneider,
Tópico(s)Arsenic contamination and mitigation
ResumoThe most common organic dyes used to color agates in the Brazilian industries are Rhodamine B, Crystal Violet, and Brilliant Green. Washing procedures carried out after the staining process release some amounts of these compounds given an undesirable color to the water. The aim of this work is to report the characteristics of the wastewaters and describe the treatment procedures used by the industries. In addition, studies of photodegradation and chemical oxidation for each one of the colorants were conducted at laboratory scale. The results showed that Rhodamine B is more resistant to photodegradation and chlorine oxidation than Crystal Violet and Brilliant Green. The environmental implications of the treatment procedure carried out by the industries are discussed.
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