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Type: Artigo de periódico
Title: Flow Injection Spectrophotometric System For Hydrogen Peroxide Monitoring In Photo-fenton Degradation Processes [sistema De Injeção Em Fluxo Espectrofotométrico Para Monitorar Peróxido De Hidrogênio Em Processo De Fotodegradação Por Reação Foto-fenton]
Author: Oliveira M.C.
Pupo Nogueira R.F.
Gomes Neto J.A.
Jardim W.F.
Rohwedder J.J.R.
Abstract: A flow injection spectrophotometric system was projected for monitoring hydrogen peroxide during photodegradation of organic contaminants in photo-Fenton processes (Fe 2+/H 2O 2/UV). Sample is injected manually in a carrier stream and then receives by confluence a 0.1 mol L -1 NH 4VO 3 solution in 0.5 mol L -1 H 2SO 4 medium. The product formed shows absorption at 446 nm which is recorded as a peak with height proportional to H 2O 2 concentration. The performance of the proposed system was evaluated by monitoring the consumption of H 2O 2 during the photodegradation of dichloroacetic acid solution by foto-Fenton reaction.
Rights: aberto
Identifier DOI: 
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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