Aqueous Ranitidine Elimination in Photolytic Processes
The elimination of ranitidine (a pharmaceutical
compound) has been carried out in the presence of UV-C radiation.
After some preliminary experiments, it has been experienced the no
influence of the gas nature (air or oxygen) bubbled in photolytic
experiments. From simple photolysis experiments the quantum yield
of this compound has been determined. Two photolytic
approximation has been used, the linear source emission in parallel
planes and the point source emission in spherical planes. The
quantum yield obtained was in the proximity of 0.05 mol Einstein-1
regardless of the method used. Addition of free radical promoters
(hydrogen peroxide) increases the ranitidine removal rate while the
use of photocatalysts (TiO2) negatively affects the process.
[1] T. A. Ternes., "Ocurrence of drugs in German sewage treatment plants
and rivers," Water Res., vol. 32, pp. 3245-3260, 1998.
[2] U. S. EPA, "Special report on environmental endocrine disruption: an
effects assessment and analysis," U.S. Environmental Protection
Agency, Washington D. C., Rep. EPA/630/R-96/012, 1997.
[3] Y. Lee, and U.von Gunten, "Oxidative transformation of micropollutants
during municipal wastewater treatment: Comparison of kinetic aspects
of selective (chlorine, chlorine dioxide, ferrateVI, and ozone) and nonselective
oxidants (hydroxyl radical)," Water Res., vol. 44, pp. 555-566,
2010.
[4] Y. Yoon, J. Ryu, J. Oh, B.G. Choi, and S.A. Snyder, "Occurrence of
endocrine disrupting compounds, pharmaceuticals, and personal care
products in the Han River (Seoul, South Korea)," Sci. Tot. Env., vol 408,
pp. 636-643, 2010.
[5] K.J. Park, C.T. M├╝ller, S. Markman, O. Swinscow-Hall, D. Pascoe, and
K.L. Buchanan, "Detection of endocrine disrupting chemicals in aerial
invertebrates at sewage treatment works," Chemosphere, vol 77, pp.
1459-1464, 2009.
[6] S. D. Richardson, "Water analysis: Emerging contaminants and current
issues," Anal. Chem., vol 81, pp. 4645-4677, 2009.
[7] C. Carlesi, D. Fino, and P. Spinelli, "Bio-refractory organics degradation
over semiconductor foam under a superimposed electric field," Catal.
Today, vol 124, pp. 273-279, 2007
[8] D.E. Latch, B.L. Stender, J.L. Packer, W.A. Arnold, and K. Mcneill,
"Photochemical fate of pharmaceuticals in the environment: Cimetidine
and ranitidine, " Environ. Sci. Technol., vol 37, 3342-3350, 2003.
[9] F.J. Rivas, O. Gimeno, A. Encinas, and F. Beltrán, "Ozonation of the
pharmaceutical compound ranitidine: Reactivity and kinetic aspects,"
Chemosphere, vol 76, pp. 651-656, 2009.
[1] T. A. Ternes., "Ocurrence of drugs in German sewage treatment plants
and rivers," Water Res., vol. 32, pp. 3245-3260, 1998.
[2] U. S. EPA, "Special report on environmental endocrine disruption: an
effects assessment and analysis," U.S. Environmental Protection
Agency, Washington D. C., Rep. EPA/630/R-96/012, 1997.
[3] Y. Lee, and U.von Gunten, "Oxidative transformation of micropollutants
during municipal wastewater treatment: Comparison of kinetic aspects
of selective (chlorine, chlorine dioxide, ferrateVI, and ozone) and nonselective
oxidants (hydroxyl radical)," Water Res., vol. 44, pp. 555-566,
2010.
[4] Y. Yoon, J. Ryu, J. Oh, B.G. Choi, and S.A. Snyder, "Occurrence of
endocrine disrupting compounds, pharmaceuticals, and personal care
products in the Han River (Seoul, South Korea)," Sci. Tot. Env., vol 408,
pp. 636-643, 2010.
[5] K.J. Park, C.T. M├╝ller, S. Markman, O. Swinscow-Hall, D. Pascoe, and
K.L. Buchanan, "Detection of endocrine disrupting chemicals in aerial
invertebrates at sewage treatment works," Chemosphere, vol 77, pp.
1459-1464, 2009.
[6] S. D. Richardson, "Water analysis: Emerging contaminants and current
issues," Anal. Chem., vol 81, pp. 4645-4677, 2009.
[7] C. Carlesi, D. Fino, and P. Spinelli, "Bio-refractory organics degradation
over semiconductor foam under a superimposed electric field," Catal.
Today, vol 124, pp. 273-279, 2007
[8] D.E. Latch, B.L. Stender, J.L. Packer, W.A. Arnold, and K. Mcneill,
"Photochemical fate of pharmaceuticals in the environment: Cimetidine
and ranitidine, " Environ. Sci. Technol., vol 37, 3342-3350, 2003.
[9] F.J. Rivas, O. Gimeno, A. Encinas, and F. Beltrán, "Ozonation of the
pharmaceutical compound ranitidine: Reactivity and kinetic aspects,"
Chemosphere, vol 76, pp. 651-656, 2009.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:53481", author = "Javier Rivas and Olga Gimeno and Maria Carbajo and Teresa Borralho", title = "Aqueous Ranitidine Elimination in Photolytic Processes", abstract = "The elimination of ranitidine (a pharmaceutical
compound) has been carried out in the presence of UV-C radiation.
After some preliminary experiments, it has been experienced the no
influence of the gas nature (air or oxygen) bubbled in photolytic
experiments. From simple photolysis experiments the quantum yield
of this compound has been determined. Two photolytic
approximation has been used, the linear source emission in parallel
planes and the point source emission in spherical planes. The
quantum yield obtained was in the proximity of 0.05 mol Einstein-1
regardless of the method used. Addition of free radical promoters
(hydrogen peroxide) increases the ranitidine removal rate while the
use of photocatalysts (TiO2) negatively affects the process.", keywords = "Quantum yield, photolysis, ranitidine, watertreatment.", volume = "4", number = "6", pages = "390-3", }