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Trends in Photochemistry & Photobiology   Volumes    Volume 13 
Abstract
Factorial experiment design applied to polyvinylpyrrolidone photocatalytic degradation in TiO2 aqueous suspension
Jaqueline Suave, Mariana S. Felipe, Humberto J. José, Regina F. P. M. Moreira
Pages: 79 - 85
Number of pages: 7
Trends in Photochemistry & Photobiology
Volume 13 

Copyright © 2011 Research Trends. All rights reserved

ABSTRACT
 
Photocatalytic degradation of polyvinyl-pyrrolidone (PVP) was studied by the system TiO2/H2O2/UV in an annular batch photoreactor. PVP solutions were tested under different conditions using a 24 full factorial design. The monitoring of the degradation was evaluated by measurements of total organic carbon (TOC) and chemical oxygen demand (COD). Measurements of residual H2O2 concentration were also performed. The results indicated that the studied process is promising and can achieve mineralization rates of about 80% by utilizing appropriate initial concentrations of PVP, catalyst dosage and hydrogen peroxide concentration, at pH 4 or 7.
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