Minerals as Potential Catalysts in Heterogeneous Catalytic Ozonation: A Kinetic Study of p-CBA Degradation in Aqueous Solutions at pH 7 †
Abstract
:1. Introduction
2. Experimental Section
2.1. Materials and Analytical Techniques
2.2. Modification of Examined Materials
3. Results and Discussion
The Kinetic Parameters
4. Conclusions
Author Contributions
Institutional Review Board Statement
Informed Consent Statement
Acknowledgments
Conflicts of Interest
References
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Catalyst | Parameters of First-Order Kinetics | |||
---|---|---|---|---|
Absence of p-CBA | Presence of p-CBA | |||
k1 (min−1) | R2 | k1 (min−1) | R2 | |
Materials not presenting catalytic activity | ||||
No Catalyst (O3) | 0.037 | 0.995 | 0.072 | 0.999 |
Kaolin | 0.094 | 0.997 | 0.095 | 0.995 |
Kaolin-Τ | 0.060 | 0.991 | 0.062 | 0.993 |
Portafil® | 0.097 | 0.995 | 0.121 | 0.996 |
Zeolite-H | 0.107 | 0.995 | 0.204 | 0.999 |
Zeolite-TH | 0.101 | 0.998 | 0.182 | 0.991 |
Materials presenting catalytic activity | ||||
Zeolite | 0.088 | 0.993 | 0.074 | 0.999 |
Zeolite-Τ | 0.150 | 0.999 | 0.097 | 0.991 |
Talc | 0.068 | 0.998 | 0.069 | 0.994 |
Talc-Τ | 0.127 | 0.993 | 0.089 | 0.997 |
Anatase | 0.119 | 0.992 | 0.084 | 0.999 |
Olivine | 0.075 | 0.992 | 0.064 | 0.995 |
Calcite | 0.064 | 0.991 | 0.059 | 0.991 |
Dolomite | 0.076 | 0.995 | 0.072 | 0.992 |
Catalyst | Parameters of Second-Order Kinetics | ||
---|---|---|---|
k2p (L/μg·min) | Cep * (μg/L) | R2 | |
No catalyst (O3) | 0.058 | 22.2 | 0.996 |
Kaolin | 0.041 | 27.8 | 0.999 |
Kaolin-T | 0.074 | 28.6 | 0.997 |
Portafil® | 0.096 | 26.3 | 0.999 |
Zeolite-H | 0.040 | 28.8 | 0.996 |
Zeolite-TH | 0.049 | 26.3 | 0.997 |
Catalyst | Parameters of Second-Order Kinetics | ||
---|---|---|---|
k2 (L/μg·min) | R2 | Reaction Time (min) | |
Zeolite | 0.030 | 0.993 | 5 |
Talc | 0.008 | 0.999 | 30 |
Talc-T | 0.025 | 0.999 | 5 |
Anatase | 0.006 | 0.995 | 30 |
Olivine | 0.006 | 0.998 | 30 |
Calcite | 0.022 | 0.992 | 5 |
Dolomite | 0.024 | 0.993 | 5 |
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Psaltou, S.; Kaprara, E.; Mitrakas, M.; Zouboulis, A. Minerals as Potential Catalysts in Heterogeneous Catalytic Ozonation: A Kinetic Study of p-CBA Degradation in Aqueous Solutions at pH 7. Mater. Proc. 2021, 5, 5. https://doi.org/10.3390/materproc2021005005
Psaltou S, Kaprara E, Mitrakas M, Zouboulis A. Minerals as Potential Catalysts in Heterogeneous Catalytic Ozonation: A Kinetic Study of p-CBA Degradation in Aqueous Solutions at pH 7. Materials Proceedings. 2021; 5(1):5. https://doi.org/10.3390/materproc2021005005
Chicago/Turabian StylePsaltou, Savvina, Efthimia Kaprara, Manassis Mitrakas, and Anastasios Zouboulis. 2021. "Minerals as Potential Catalysts in Heterogeneous Catalytic Ozonation: A Kinetic Study of p-CBA Degradation in Aqueous Solutions at pH 7" Materials Proceedings 5, no. 1: 5. https://doi.org/10.3390/materproc2021005005