Removal of an Azo Dye from Wastewater through the Use of Two Technologies: Magnetic Cyclodextrin Polymers and Pulsed Light
Abstract
:1. Introduction
2. Results and Discussion
2.1. Characteristics of the Polymer Material
2.2. Adsorbent Dosage
2.3. pH Effect
2.4. Effect of Contact Time
2.5. Kinetic Analysis
2.6. Isotherm Analysis
2.7. Thermodynamic Parameters
2.8. Advanced Oxidation Process
3. Materials and Methods
3.1. Chemicals and Reagents
3.2. Iron Nanoparticles Preparation
3.3. Epichlorohydrin-Iron-β-Cyclodextrin Polymer Preparation
3.4. Characterization of the Polymer Material
3.5. Dye Solution Preparation
3.6. Adsorption Experiments
3.7. Kinetics and Isotherm Analysis
3.8. Polymer Reusability
3.9. Dye Degradation by Pulsed Light/H2O2 Process
3.10. Molecular Models
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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PFOM | β-CDs-EPI Magnetic Polymer | |||
Co (mg/L) | qeexp | qecal | K1(min−1) | R2 |
50 | 2.10 | 1.61 | 0.027 | 0.982 |
100 | 4.20 | 2.60 | 0.024 | 0.950 |
150 | 6.26 | 3.48 | 0.024 | 0.924 |
200 | 8.95 | 5.93 | 0.036 | 0.978 |
300 | 13.10 | 11.78 | 0.036 | 0.989 |
PSOM | β-CDs-EPI Magnetic Polymer | |||
Co (mg/L) | qeexp | qecal | K2(g/mg min) | R2 |
50 | 2.10 | 2.10 | 0.225 | 0.999 |
100 | 4.20 | 4.20 | 0.168 | 0.999 |
150 | 6.26 | 6.26 | 0.105 | 0.999 |
200 | 8.95 | 8.62 | 0.035 | 0.999 |
300 | 13.10 | 13.10 | 0.013 | 0.999 |
IDM | β-CDs-EPI Magnetic Polymer | |||
Co (mg/L) | qeexp | qecal | Ki(mg/g min 1/2) | R2 |
50 | 2.10 | 0.74 | 0.120 | 0.959 |
100 | 4.20 | 1.85 | 0.21 | 0.920 |
150 | 6.26 | 3.46 | 0.24 | 0.872 |
200 | 8.95 | 4.58 | 0.41 | 0.861 |
300 | 13.10 | 3.75 | 0.89 | 0.878 |
Isotherm | Parameter | CDs |
---|---|---|
Freundlich | KF | 0.190 |
nF | 1.040 | |
R2 | 0.911 | |
Langmuir | qmax | 32 |
KL | 0.320 | |
aL | 0.010 | |
R2 | 0.747 | |
RL | 0.667–0.250 | |
Tempkin | aT | 0.150 |
bT | 0.370 | |
R2 | 0.807 |
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Rodríguez-López, M.I.; Pellicer, J.A.; Gómez-Morte, T.; Auñón, D.; Gómez-López, V.M.; Yáñez-Gascón, M.J.; Gil-Izquierdo, Á.; Cerón-Carrasco, J.P.; Crini, G.; Núñez-Delicado, E.; et al. Removal of an Azo Dye from Wastewater through the Use of Two Technologies: Magnetic Cyclodextrin Polymers and Pulsed Light. Int. J. Mol. Sci. 2022, 23, 8406. https://doi.org/10.3390/ijms23158406
Rodríguez-López MI, Pellicer JA, Gómez-Morte T, Auñón D, Gómez-López VM, Yáñez-Gascón MJ, Gil-Izquierdo Á, Cerón-Carrasco JP, Crini G, Núñez-Delicado E, et al. Removal of an Azo Dye from Wastewater through the Use of Two Technologies: Magnetic Cyclodextrin Polymers and Pulsed Light. International Journal of Molecular Sciences. 2022; 23(15):8406. https://doi.org/10.3390/ijms23158406
Chicago/Turabian StyleRodríguez-López, María Isabel, José Antonio Pellicer, Teresa Gómez-Morte, David Auñón, Vicente M. Gómez-López, María José Yáñez-Gascón, Ángel Gil-Izquierdo, José Pedro Cerón-Carrasco, Grégorio Crini, Estrella Núñez-Delicado, and et al. 2022. "Removal of an Azo Dye from Wastewater through the Use of Two Technologies: Magnetic Cyclodextrin Polymers and Pulsed Light" International Journal of Molecular Sciences 23, no. 15: 8406. https://doi.org/10.3390/ijms23158406