TY - JOUR
T1 - Solar heterogeneous photocatalytic degradation of phenol on TiO2/quartz and TiO2/calcite
T2 - a statistical and kinetic approach on comparative efficiencies towards a TiO2/glass system
AU - Silerio-Vázquez, Felipe
AU - Alarcón-Herrera, María T.
AU - Proal-Nájera, José Bernardo
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2022/6
Y1 - 2022/6
N2 - Phenol is a widely used synthetic organic compound, which according to global estimations, is discharged into the environment at a rate of 10 tons/year through industrial waste. Phenol is a recalcitrant pollutant, and human exposure to water containing phenolic substances can lead to health issues. It has been found both in drinking water and wastewater. Solar heterogeneous photocatalytic phenol degradation, measured through chemical oxygen demand, was performed on a thin film tilted plate reactor with TiO2 immobilized onto different support materials. A full factorial experimental design (4 × 3 × 3) was carried out to statistically evaluate if the independent variables’ effects were significant. Four advanced oxidation processes (photolysis, photolysis + H2O2, heterogeneous photocatalysis, and heterogeneous photocatalysis + H2O2), three support materials (quartz, calcite, and glass), and three pH levels (3, 5.4, and 9) were evaluated. Reaction kinetics were fitted to the pseudo-first-order reaction rate and data was analyzed with an ANCOVA and means test, considering solar light intensity as a covariate. Photolysis/calcite at pH 5.4 and heterogeneous photocatalysis + H2O2/glass plate at pH 3 gave the best results, with a reaction rate constant kph = 3.047 × 10−3 min−1 and kphC = 4.498 × 10−3 min−1, respectively. The three independent variables and their interactions had a significant effect in the phenol degradation (p < 0.05).
AB - Phenol is a widely used synthetic organic compound, which according to global estimations, is discharged into the environment at a rate of 10 tons/year through industrial waste. Phenol is a recalcitrant pollutant, and human exposure to water containing phenolic substances can lead to health issues. It has been found both in drinking water and wastewater. Solar heterogeneous photocatalytic phenol degradation, measured through chemical oxygen demand, was performed on a thin film tilted plate reactor with TiO2 immobilized onto different support materials. A full factorial experimental design (4 × 3 × 3) was carried out to statistically evaluate if the independent variables’ effects were significant. Four advanced oxidation processes (photolysis, photolysis + H2O2, heterogeneous photocatalysis, and heterogeneous photocatalysis + H2O2), three support materials (quartz, calcite, and glass), and three pH levels (3, 5.4, and 9) were evaluated. Reaction kinetics were fitted to the pseudo-first-order reaction rate and data was analyzed with an ANCOVA and means test, considering solar light intensity as a covariate. Photolysis/calcite at pH 5.4 and heterogeneous photocatalysis + H2O2/glass plate at pH 3 gave the best results, with a reaction rate constant kph = 3.047 × 10−3 min−1 and kphC = 4.498 × 10−3 min−1, respectively. The three independent variables and their interactions had a significant effect in the phenol degradation (p < 0.05).
KW - Advanced oxidation processes
KW - COD
KW - Field experiment
KW - Hydrogen peroxide
KW - Phenol degradation
KW - Prototype testing
KW - Supported TiO
UR - http://www.scopus.com/inward/record.url?scp=85125423881&partnerID=8YFLogxK
U2 - 10.1007/s11356-022-19379-5
DO - 10.1007/s11356-022-19379-5
M3 - Artículo
C2 - 35224700
AN - SCOPUS:85125423881
SN - 0944-1344
VL - 29
SP - 42319
EP - 42330
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 28
ER -