Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/198447
Type: Artigo de periódico
Title: Use Of Ca-alginate As A Novel Support For Tio2 Immobilization In Methylene Blue Decolorisation.
Author: Albarelli, Juliana Q
Santos, Diego T
Murphy, Sharon
Oelgemöller, Michael
Abstract: This study provides a preliminary contribution to the development of an industrial process for the UV/TiO(2) water treatment by introducing a novel support for TiO(2) immobilization. For the following study, Methylene Blue (MB) was chosen as the model dye to evaluate this novel immobilization system. The results showed that TiO(2) immobilized in a Ca-alginate bead retained its photoactivity during all of the experiments and the TiO(2)-gel beads presented good stability in water for maintaining its shape after several uses. When a proportion of 10% (v/v) of these beads was used, the configuration system demonstrated an improved mass transfer and consequently enhanced degradation efficiency. Experiments were also performed using 'recycled' beads. The results showed an increase in the degradation efficiency when the beads were reused, with an eventual 'self-destructive' effect. These studies showed great promise regarding the recyclable reagents with a reduction in waste at no greater cost or reduction in efficiency. Therefore, the potential of TiO(2)-gel beads as a simple and environmentally friendly catalyst for continuous use was developed.
Subject: Adsorption
Alginates
Calcium
Catalysis
Color
Glucuronic Acid
Hexuronic Acids
Light
Methylene Blue
Microscopy, Electron, Scanning
Microspheres
Spectrophotometry, Ultraviolet
Time Factors
Titanium
Citation: Water Science And Technology : A Journal Of The International Association On Water Pollution Research. v. 60, n. 4, p. 1081-7, 2009.
Rights: fechado
Identifier DOI: 10.2166/wst.2009.459
Address: http://www.ncbi.nlm.nih.gov/pubmed/19700848
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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