Terephthalic acid decomposition by photocatalytic ozonation with V x O y /ZnO under different UV-A LEDs distributions
Por:
Fuentes, Iliana, Rodriguez, Julia L., Tiznado, Hugo, Romo-Herrera, Jose M., Chairez, Isaac, Poznyak, Tatyana
Publicada:
1 ene 2019
Resumen:
In this work, the degradation of terephthalic acid (TA) by vanadium oxide (V x O y ) supported on zinc oxide (ZnO) was evaluated in a photocatalytic ozonation treatment based on two UV-A LEDs distributions. TEM analysis and specific surface area measurement suggest that V x O y is not supported on ZnO, while the EDXRF and XPS analysis indicated the presence of V x O y . The XPS analysis on V x O y /ZnO catalyst showed non-significant surface change between fresh and used catalyst. However, ozone decomposition showed a higher reaction rate constant for catalytic (230%) and photocatalytic ozonation (310%) in comparison with single ozone treatment. Photocatalytic ozonation with central and external irradiation arrays was evaluated in TA elimination by a kinetic study. The irradiation arrays had not statistical differences in the TA decomposition or oxalic acid formation. These results suggest that the construction of central bodies inside the reactor could be not necessary for photocatalytic processes. © 2019, © 2019 Taylor & Francis Group, LLC.
Filiaciones:
Fuentes, Iliana:
Lab. de Ing. Química Ambiental, ESIQIE—Instituto Politécnico Nacional, Zacatenco, México, Mexico
UPIBI—Instituto Politécnico Nacional, Ticomán, Unidad Profesional Interdisciplinaria de Biotecnología, México, Mexico
ESIQIE Inst Politecn Nacl, Lab Ing Quim Ambiental, Mexico City, DF, Mexico
UPIBI Inst Politecn Nacl, Unidad Profes Interdisciplinaria Biotecnol, Mexico City, DF, Mexico
Rodriguez, Julia L.:
Lab. de Ing. Química Ambiental, ESIQIE—Instituto Politécnico Nacional, Zacatenco, México, Mexico
ESIQIE Inst Politecn Nacl, Lab Ing Quim Ambiental, Mexico City, DF, Mexico
Tiznado, Hugo:
Centro de Nanociencias y Nanotecnología CNyN Universidad Nacional Autónoma de México, Carretera Tijuana a Ensenada, Ensenada, Baja California, Mexico
Univ Nacl Autonoma Mexico, CNyN, Carretera Tijuana Ensenada, Ensenada, Baja California, Mexico
Romo-Herrera, Jose M.:
Centro de Nanociencias y Nanotecnología CNyN Universidad Nacional Autónoma de México, Carretera Tijuana a Ensenada, Ensenada, Baja California, Mexico
Univ Nacl Autonoma Mexico, CNyN, Carretera Tijuana Ensenada, Ensenada, Baja California, Mexico
Chairez, Isaac:
UPIBI—Instituto Politécnico Nacional, Ticomán, Unidad Profesional Interdisciplinaria de Biotecnología, México, Mexico
UPIBI Inst Politecn Nacl, Unidad Profes Interdisciplinaria Biotecnol, Mexico City, DF, Mexico
Poznyak, Tatyana:
Lab. de Ing. Química Ambiental, ESIQIE—Instituto Politécnico Nacional, Zacatenco, México, Mexico
ESIQIE Inst Politecn Nacl, Lab Ing Quim Ambiental, Mexico City, DF, Mexico
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