Design of a photocatalytic reactor for the treatment of cyromazine-contaminated water using hematoporphyrin as photosensitizer.
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Abstract
In this work, the studies of the mechanisms of the photocatalytic oxidation of cyromazine using hematoporphyrin as a photosensitizer agent were investigated. This oxidation process was determined using UV-Vis spectrophotometry, GC-MS spectrometry, and HPLC chromatography. The singlet oxygen generation was also determined. Melamine and ammelide were identified as the photodegradation products of cyromazine. A kinetic constant corresponding to a first-order equation was obtained. A piston flow reactor was designed to purify water contaminated with cyromazine, considering the need for a reactor that is easy to implement and maintain, ideal for implementation in rural areas, and that ensure high conversion per reactor volume.
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References
Orozco, C., Pérez, A., González, M., Rodríguez, F., Alfayate, J., «Contaminación ambiental. Una visión desde la química,» Thompson Editores, 2003.
Glaze, W., Kang, J., Chapin, D., «The chemistry of water treatment processes involving ozone, hydrogen peroxide and ultraviolet radiation,» Ozone Science and Engineering, vol. 9, pp. 335-352, 1987
Safarzadeh-Amiri A., Bolton J., Cater S. «The use of iron in advanced oxidation processes,» Journal of Advanced Oxidation Technologies, vol. 1, pp. 18-26, 1996.
Mendoza, J., Montañés, M., Palomares, A., «Ciencia y tecnología del medioambiente,» Servicio de Publicaciones Universidad Politécnica de Valencia, 1998.
Center for Enviromental Research Information. «National risk management research laboratory. Office of research and development. U.S. enviromental protection agency. Handbook Advanced Photochemical Oxidation Processes, » Cincinnati, Ohio 45266, 1998.
García-Ripoll, A., Amat, A., Arques, A., Vicente, R., Lopez, M., Oller, I., Maldonado, M., Gernjak, W., «Detoxification and/or increase of the biodegradability of aqueous solutions of dimethoate by means of solar photocatalysis, » Chemosphere, vol. 68, pp. 293-300, 2007.
Malato, S., Blanco, J., Vidal, A., Richter, C., «Photocatalysis with solar energat a pilot-plant scale: an overview, » Applied Catalysis B: Environmental, vol. 37, pp. 1-15, 2002.
Goutallier, G., Valette, J., Guillard, C., Faure, R., «Photocatalyse degradation of cyromazine in aqueous titanium dioxide suspensions: Comparison with photolysis,» Journal of Photochemistry and Photobiology A., vol. 141(1), pp. 79-84, 2001.
Tsartsail, N., Samanidou, V., «Sample preparation of eggs from laying hens using quechers dispersive extraction for the simultaneous determination of melamine and cyromazine residues by HPLC-DAD,» Analytical Chemistry Insights, vol. 10(1), pp. 53-58, 2015.
Srivastava, R., Anand, V., Carper, W., «A fluorescence study of hematoporphyrin,» Applied Spectroscopy, vol. 27, pp. 444-449, 1973.
Zoltan, T., Vargas, F., Izzo, C., «UV-Vis Spectrophotometrical and analytical methodology for the determination of singlet oxygen in new antibacterials drugs.,» In: Dyes and Drugs. New uses and Implications, Harold H. Trimm and William Hunter. Apple Academic Press CRC Press, Taylor & Francis Group., Inc. Oakville, ON L6LOA2, Canada. Cap. 3, pp. 35-49. 2011. International Standard Book Number 13: 978-1-4665-6261-5.
Li, B., Lin L., Lin, H., Xie, S., «Singlet oxygen quantum yields of porphyrin-based photosensitizers for photodynamic therapy,» Journal of Innovative Optical Health Science, vol. 1, pp. 141-149, 2008.
Owens, J., Grimes, K., Goa, K., Mcmahon, L., «Quantum yield measurements on some new hematoporphyrin mixtures, including zinc and HpD precursor,» Inorganica Chimica Acta, vol. 195(1), pp. 117-122, 1992