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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received July 26, 2016
Accepted October 15, 2016
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Heterogeneous photocatalytic degradation of phenol and derivatives by (BiPO4/H2O2/UV and TiO2/H2O2/UV) and the evaluation of plant seed toxicity tests

Chemical Engineering Department, Federal University of Pernambuco, Avenida Prof. Artur de Sá, s/n, 50740-521 Recife, Brazil 1Instituto de Investigación, Universidad Técnica de Manabí, Av. Urbina y Che Guevara, Portoviejo, Manabí, Ecuador 2Pharmacy Factory, REQUIMTE/Department of Chemical Sciences, University Porto, Rua Jorge Viterbo Ferreira, 228, Porto, 4050-313, Portugal
Korean Journal of Chemical Engineering, February 2017, 34(2), 511-522(12), 10.1007/s11814-016-0293-1
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Abstract

We examined the photocatalytic degradation of phenol from laboratory samples under UV radiation by using BiPO4/H2O2 and TiO2/H2O2 advanced oxidation systems. Both catalysts prepared were characterized by scanning electron microscopy, Fourier transform infrared and X-ray diffraction. Surface area tests showed about 3.46 and 31.33m2·g-1, respectively, for BiPO4 and TiO2. A central composite design was developed with the following variables--catalyst concentration, time and concentration of hydrogen peroxide--to optimize the degradation process. Removal rates of 99.99% for phenol degradation using BiPO4 and TiO2 were obtained, respectively. For mineralization of organic carbon were obtained 95,56% when using BiPO4 and 63,40% for TiO2, respectively. The lumped kinetic model represented satisfactorily the degradation of phenol process, using BiPO4/H2O2/UV (R2=0.9977) and TiO2/H2O2/UV (R2=0.9701) treatments. The toxicity tests using different seed species showed the benefits of the proposed advanced oxidation process when applied to waste waters containing these pollutants.

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