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International Journal of Photoenergy
Volume 2015, Article ID 608412, 9 pages
Research Article

Ozonation of Indigo Carmine Enhanced by Fe/Pimenta dioica L. Merrill Particles

1Universidad Autónoma del Estado de México (UAEMex), Centro Conjunto de Investigación en Química Sustentable (CCIQS), UAEM-UNAM, Carretera Toluca-Atlacomulco, Km 14.5, 50200 Toluca, MEX, Mexico
2Instituto Nacional de Investigaciones Nuclearles (ININ), Carretera México-Toluca s/n, 52750 La Marquesa Ocoyoacac, MEX, Mexico

Received 2 October 2014; Accepted 17 February 2015

Academic Editor: Meenakshisundaram Swaminathan

Copyright © 2015 Teresa Torres-Blancas et al. 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.


Green synthesis of metallic particles has become an economic way to improve and protect the environment by decreasing the use of toxic chemicals and eliminating dyes. The synthesis of metal particles is gaining more importance due to its simplicity, rapid rate of synthesis of particles, and environmentally friendly. The present work aims to report a novel and environmentally friendly method for the synthesis of iron particles using deoiled Pimenta dioica L. Merrill husk as support. The indigo carmine removal efficiency by ozonation and catalyzed ozonation is also presented. Synthesized materials were characterized by N2 physisorption and scanning electron microscopy (SEM/EDS). By UV-Vis spectrophotometry the removal efficiency of indigo carmine was found to be nearly 100% after only 20 minutes of treatment under pH 3 and with a catalyst loading of 1000 mgL−1. Analytical techniques such as determination of the total organic carbon content (TOC) and chemical oxygen demand (COD) showed that iron particles supported on deoiled Pimenta dioica L. Merrill husk can be efficiently employed to degrade indigo carmine and achieved a partial mineralization (conversion to CO2 and H2O) of the molecule. From the results can be inferred that the prepared biocomposite increases the hydroxyl radicals generation.