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Valorization of Citrus Waste: Use in Catalysis for the Oxidation of Sulfides

María Belén Colombo Migliorero, Valeria Palermo*, Patricia Graciela Vázquez, Gustavo Pablo Romanelli

Research and Development Center of Applied Science ‘Dr. Jorge J. Ronco’ (CINDECA-CCT-CONICET), National University of La Plata, La Plata, Argentina

* Corresponding author: email

Journal of Renewable Materials 2017, 5(3-4), 167-173. https://doi.org/10.7569/JRM.2017.634108

Abstract

The utilization and valorization of industrial waste is an effective strategy for environmental protection. Since the juice industry generates a huge amount of citrus waste, we studied the application of thermally treated orange peel in catalysis. On the other hand, Keggin heteropolyacids are excellent oxidant catalysts used as a replacement for conventional oxidants; however, their solubility in polar solvents and the low specific area limit their use as heterogeneous catalysts. The utilization of treated orange peel as heteropolyacid support for the selective oxidation of sulfides is presented here. Firstly, orange peel was thermally treated, and then it was incorporated with heteropolyacids (PMo) during the silica synthesis by the sol-gel method. Therefore, SiO2-PMo, SiO2-OP100-PMo, and SiO2-OP200-PMo were obtained, characterized by FTIR, SBET, XRD, and potentiometric titration, and were tested as heterogeneous catalysts in the selective oxidation of sulfide to sulfoxide in a greener process: H2O2 as oxidant and ethanol as solvent, at 25 °C.

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APA Style
Migliorero, M.B.C., Palermo, V., Vázquez, P.G., Romanelli, G.P. (2017). Valorization of citrus waste: use in catalysis for the oxidation of sulfides. Journal of Renewable Materials, 5(3-4), 167-173. https://doi.org/10.7569/JRM.2017.634108
Vancouver Style
Migliorero MBC, Palermo V, Vázquez PG, Romanelli GP. Valorization of citrus waste: use in catalysis for the oxidation of sulfides. J Renew Mater. 2017;5(3-4):167-173 https://doi.org/10.7569/JRM.2017.634108
IEEE Style
M.B.C. Migliorero, V. Palermo, P.G. Vázquez, and G.P. Romanelli "Valorization of Citrus Waste: Use in Catalysis for the Oxidation of Sulfides," J. Renew. Mater., vol. 5, no. 3-4, pp. 167-173. 2017. https://doi.org/10.7569/JRM.2017.634108



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