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Photocatalytic decolorization and degradation of dye solutions and wastewaters in the presence of titanium dioxide.
J Hazard Mater. 2006 Aug 10; 136(1):85-94.JH

Abstract

In this study, the photocatalytic degradation of two commercial azo dyes in the presence of TiO(2) suspensions as photocatalyst has been investigated. The degradation of the dyes follows a pseudo-first-order kinetics according to the Langmuir-Hinshelwood model. Under the certain experimental conditions, in the presence of TiO(2) P-25 decolorization is achieved within 100 min of illumination, while in the presence of TiO(2) Hombikat UV-100 complete color disappearance is accomplished in less than 50 min of light exposure. The influence of various parameters, such as the type and mass of the catalyst, the initial concentration of the dye, etc. on the degradation process was examined. The mineralization of organic carbon was also evaluated by measuring the dissolved organic carbon (DOC) of the dye solutions. Moreover, the toxic properties of the dye solutions treated by photocatalysis were examined by the use of a Microtox bioassay (Vibrio fischeri). Finally, experiments using real textile wastewater were also carried out, in order to examine the effectiveness of the method to a more complex substrate.

Authors+Show Affiliations

Aristotle University of Thessaloniki, Department of Chemistry, Environmental Pollution Control Laboratory, Greece.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16406296

Citation

Bizani, E, et al. "Photocatalytic Decolorization and Degradation of Dye Solutions and Wastewaters in the Presence of Titanium Dioxide." Journal of Hazardous Materials, vol. 136, no. 1, 2006, pp. 85-94.
Bizani E, Fytianos K, Poulios I, et al. Photocatalytic decolorization and degradation of dye solutions and wastewaters in the presence of titanium dioxide. J Hazard Mater. 2006;136(1):85-94.
Bizani, E., Fytianos, K., Poulios, I., & Tsiridis, V. (2006). Photocatalytic decolorization and degradation of dye solutions and wastewaters in the presence of titanium dioxide. Journal of Hazardous Materials, 136(1), 85-94.
Bizani E, et al. Photocatalytic Decolorization and Degradation of Dye Solutions and Wastewaters in the Presence of Titanium Dioxide. J Hazard Mater. 2006 Aug 10;136(1):85-94. PubMed PMID: 16406296.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytic decolorization and degradation of dye solutions and wastewaters in the presence of titanium dioxide. AU - Bizani,E, AU - Fytianos,K, AU - Poulios,I, AU - Tsiridis,V, Y1 - 2006/01/06/ PY - 2006/1/13/pubmed PY - 2006/12/9/medline PY - 2006/1/13/entrez SP - 85 EP - 94 JF - Journal of hazardous materials JO - J Hazard Mater VL - 136 IS - 1 N2 - In this study, the photocatalytic degradation of two commercial azo dyes in the presence of TiO(2) suspensions as photocatalyst has been investigated. The degradation of the dyes follows a pseudo-first-order kinetics according to the Langmuir-Hinshelwood model. Under the certain experimental conditions, in the presence of TiO(2) P-25 decolorization is achieved within 100 min of illumination, while in the presence of TiO(2) Hombikat UV-100 complete color disappearance is accomplished in less than 50 min of light exposure. The influence of various parameters, such as the type and mass of the catalyst, the initial concentration of the dye, etc. on the degradation process was examined. The mineralization of organic carbon was also evaluated by measuring the dissolved organic carbon (DOC) of the dye solutions. Moreover, the toxic properties of the dye solutions treated by photocatalysis were examined by the use of a Microtox bioassay (Vibrio fischeri). Finally, experiments using real textile wastewater were also carried out, in order to examine the effectiveness of the method to a more complex substrate. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/16406296/Photocatalytic_decolorization_and_degradation_of_dye_solutions_and_wastewaters_in_the_presence_of_titanium_dioxide_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(05)00703-X DB - PRIME DP - Unbound Medicine ER -