TY - JOUR
T1 - Comparative Efficiencies for Phenol Degradation on Solar Heterogeneous Photocatalytic Reactors
T2 - Flat Plate and Compound Parabolic Collector
AU - Silerio-Vázquez, Felipe de J.
AU - Núñez-Núñez, Cynthia M.
AU - Alarcón-Herrera, María T.
AU - Proal-Nájera, José B.
N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/5/24
Y1 - 2022/5/24
N2 - Phenol is a recalcitrant anthropogenic compound whose presence has been reported in both wastewater and drinking water; human exposure to phenolic substances can lead to health problems. The degradation of phenol (measured as COD decrease) through solar heterogeneous photocatalysis with immobilized TiO2 was performed in two different reactors: a flat-plate reactor (FPR) and a compound parabolic collector (CPC). A 23 full factorial experimental design was followed. The variables were the presence of TiO2, H2 O2 addition, and the type of reactor. Data were fitted to the pseudo-first-order reaction-rate-kinetics model. The rate constant for photocatalytic phenol degradation with 1 mM of H2 O2 was 6.6 × 10−3 min−1 for the FPR and 5.9 × 10−3 min−1 in the CPC. The calculated figures of merit were analyzed with a MANCOVA, with UV fluence as a covariate. An ANCOVA showed that the type of reactor, H2 O2 addition, or fluence had no statistically significant effect on the results, but there was for the presence of TiO2. According to the MANCOVA, fluence and TiO2 presence were significant (p < 0.05). The CPC was on average 17.4% more efficient than the FPR when it came to collector area per order (ACO) by heterogeneous photocatalysis and 1 mM H2 O2 addition.
AB - Phenol is a recalcitrant anthropogenic compound whose presence has been reported in both wastewater and drinking water; human exposure to phenolic substances can lead to health problems. The degradation of phenol (measured as COD decrease) through solar heterogeneous photocatalysis with immobilized TiO2 was performed in two different reactors: a flat-plate reactor (FPR) and a compound parabolic collector (CPC). A 23 full factorial experimental design was followed. The variables were the presence of TiO2, H2 O2 addition, and the type of reactor. Data were fitted to the pseudo-first-order reaction-rate-kinetics model. The rate constant for photocatalytic phenol degradation with 1 mM of H2 O2 was 6.6 × 10−3 min−1 for the FPR and 5.9 × 10−3 min−1 in the CPC. The calculated figures of merit were analyzed with a MANCOVA, with UV fluence as a covariate. An ANCOVA showed that the type of reactor, H2 O2 addition, or fluence had no statistically significant effect on the results, but there was for the presence of TiO2. According to the MANCOVA, fluence and TiO2 presence were significant (p < 0.05). The CPC was on average 17.4% more efficient than the FPR when it came to collector area per order (ACO) by heterogeneous photocatalysis and 1 mM H2 O2 addition.
KW - batch mode
KW - collector area per order
KW - figures of merit
KW - fluence
KW - solar irradiance
KW - titanium dioxide
UR - http://www.scopus.com/inward/record.url?scp=85130844336&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/1ed0b3c2-317a-3194-bed2-6a37fde0c86c/
U2 - 10.3390/catal12060575
DO - 10.3390/catal12060575
M3 - Artículo
AN - SCOPUS:85130844336
SN - 2073-4344
VL - 12
SP - 575
JO - Catalysts
JF - Catalysts
IS - 6
M1 - 575
ER -
