Contribution of Metal Species to the Heterogeneous Photocatalytic Degradation of Natural Organic Matter

Uyguner, Ceyda Senem; Bekbolet, Miray

doi:https://doi.org/10.1155/2007/23156

International Journal of Photoenergy

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Research Article | Open Access

Volume 2007 | Article ID 023156 | https://doi.org/10.1155/2007/23156

Contribution of Metal Species to the Heterogeneous Photocatalytic Degradation of Natural Organic Matter

Ceyda Senem Uyguner¹and Miray Bekbolet¹

Academic Editor: Leonardo Palmisano

Received30 Mar 2006

Revised11 Jul 2006

Accepted15 Aug 2006

Published22 Nov 2006

Abstract

The role of organic matters which are high molecular weight macromolecules in natural water supplies and their subsequent removal by advanced oxidation technologies has gained importance because they posses a substantial capacity to complex dissolved metal species. The present study was conducted to evaluate the impact of aqueous Cr(VI) and Mn(II) species on the photocatalytic oxidation of humic acids as a major component of natural organic matter in aquatic systems. The photocatalytic decolorization rate of humic acid was followed by pseudo-first-order and Langmuir Hinshelwood kinetic models. The presence of aqueous Cr(VI) and Mn(II) species did not significantly alter the degradation efficiency (≤20%) in terms of first-order kinetic model. Although the impact of manganese species could be considered as insignificant, a substantial adsorption effect could be assessed as reflected by respective Langmuir-Hinshelwood kinetic model parameters.

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Copyright

Copyright © 2007 Ceyda Senem Uyguner and Miray Bekbolet. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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