Hybrid Coordination Networks for Removal of Pollutants from Wastewater
Abstract
:1. Introduction
2. Results and Discussion
2.1. Characterization of Materials
2.2. Adsorption Studies
2.2.1. Influence of Initial pH of Aqueous Solutions upon the Adsorption Properties of CaCEPPA and CoCEPPA Materials
2.2.2. Stirring Time Influence on Adsorption Properties of CaCEPPA and CoCEPPA Materials
2.2.3. Influence of Equilibrium Concentration of Metal Ions upon the Adsorption Properties of CaCEPPA and CoCEPPA Materials
2.2.4. Comparison with Other Adsorbents
3. Materials and Methods
3.1. Materials
3.2. Instrumentation
3.3. Synthesis of Materials
Co2[(O2P(CH2CH2COO)(C6H5)(H2O)]2·2H2O (CoCEPPA) and Ca[O2P(CH2CH2COOH)(C6H5)]2 (CaCEPPA)
3.4. Adsorption Studies
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Kinetic Model | Parameters | CaCEPPA | CoCEPPA | ||
---|---|---|---|---|---|
Cd | Pb | Cd | Pb | ||
qe exp, mg/g | 15.14 | 11.85 | 21.08 | 17.23 | |
Pseudo-first-order | qe calc, mg/g | 7.15 | 5.545 | 8.56 | 9.44 |
k1, min−1 | 0.0424 | 0.0344 | 0.024 | 0.0342 | |
R2 | 0.9674 | 0.8932 | 0.7840 | 0.8573 | |
ERRSQ | 353 | 221 | 970 | 331 | |
χ2 | 99.5 | 84.7 | 318 | 74.7 | |
ARE, % | 228 | 253 | 458 | 183 | |
Pseudo-second-order | qe calc, mg/g | 15.67 | 12.4 | 21.92 | 18.25 |
k2, g mg−1 min−1 | 0.0149 | 0.0153 | 0.0104 | 0.0079 | |
R2 | 0.9975 | 0.9959 | 0.9968 | 0.9928 | |
ERRSQ | 4.21 | 3.09 | 10.4 | 6.39 | |
χ2 | 0.389 | 0.45 | 0.727 | 0.59 | |
ARE, % | 5.81 | 7.31 | 7.14 | 8.26 |
Isotherm Model | Parameters | CaCEPPA | CoCEPPA | ||
---|---|---|---|---|---|
Cd | Pb | Cd | Pb | ||
qm exp, mg/g | 32.6 | 21.4 | 51.6 | 32.7 | |
Langmuir | qm calc, mg/g | 36.5 | 23.52 | 54.9 | 35.8 |
kL, L/mg | 0.0556 | 0.0483 | 0.0886 | 0.0739 | |
R2 | 0.9964 | 0.9968 | 0.9909 | 0.9968 | |
ERRSQ | 10.6 | 2.29 | 27.3 | 10.6 | |
χ2 | 0.46 | 0.21 | 2.1 | 0.54 | |
ARE, % | 5.3 | 5.99 | 18.1 | 5.78 | |
Freundlich | kF, (mg/g) (L/mg)n | 3.106 | 2.188 | 6.65 | 3.509 |
1/n | 0.5183 | 0.4805 | 0.4590 | 0.5067 | |
R2 | 0.9475 | 0.9448 | 0.9648 | 0.9193 | |
ERRSQ | 165 | 38.5 | 253 | 259 | |
χ2 | 4.86 | 2.38 | 5.23 | 8.01 | |
ARE, % | 17.3 | 15.3 | 14.6 | 22.3 | |
Temkin | b, J/mol | 353 | 563 | 275 | 352 |
KT, L/g | 0.768 | 0.713 | 1.88 | 0.44 | |
R2 | 0.9700 | 0.9931 | 0.9801 | 0.9628 | |
ERRSQ | 22.9 | 1.83 | 36.0 | 29.9 | |
χ2 | 1.82 | 0.422 | 7.59 | 1.85 | |
ARE, % | 18.5 | 9.36 | 42.6 | 16.3 | |
Dubinin–Raduschkevich | qm, mg/g | 21.6 | 14.1 | 31.0 | 22.3 |
KDR, mol2/J2 | 2 × 10−6 | 2 × 10−6 | 4 × 10−7 | 1 × 10−6 | |
R2 | 0.7985 | 0.7752 | 0.7785 | 0.7630 | |
ERRSQ | 269 | 95.3 | 746 | 324 | |
χ2 | 14.8 | 7.58 | 25.9 | 16.5 | |
ARE, % | 43.8 | 24.6 | 37.7 | 34.0 |
Adsorbent | qm (mg g−1) | References |
---|---|---|
Functionalized Zr-MOFs | 41.32 | [10] |
UiO-66-NHC(S)NHMe | 49 | [51] |
TMU-5 | 43 | [52] |
Cu-DPA MOF | 1.334 | [53] |
LDH/MOF NC | 415.3 | [54] |
CaCEPPA | 32.6 | This paper |
CoCEPPA | 51.6 |
Adsorbent | qm (mg g−1) | References |
---|---|---|
Functionalized Zr-MOFs | 50.51 | [10] |
UiO-66-NHC(S)NHMe | 232 | [51] |
TMU-5 | 251 | [52] |
Cu-DPA MOF | 2.19 | [53] |
LDH/MOF NC | 301.4 | [54] |
CaCEPPA | 21.4 | This paper |
CoCEPPA | 32.7 |
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Marganovici, M.; Maranescu, B.; Visa, A.; Lupa, L.; Hulka, I.; Chiriac, V.; Ilia, G. Hybrid Coordination Networks for Removal of Pollutants from Wastewater. Int. J. Mol. Sci. 2022, 23, 12611. https://doi.org/10.3390/ijms232012611
Marganovici M, Maranescu B, Visa A, Lupa L, Hulka I, Chiriac V, Ilia G. Hybrid Coordination Networks for Removal of Pollutants from Wastewater. International Journal of Molecular Sciences. 2022; 23(20):12611. https://doi.org/10.3390/ijms232012611
Chicago/Turabian StyleMarganovici, Marko, Bianca Maranescu, Aurelia Visa, Lavinia Lupa, Iosif Hulka, Vlad Chiriac, and Gheorghe Ilia. 2022. "Hybrid Coordination Networks for Removal of Pollutants from Wastewater" International Journal of Molecular Sciences 23, no. 20: 12611. https://doi.org/10.3390/ijms232012611