Adsorption Performance of Amino Functionalized Magnetic Molecular Sieve Adsorbent for Effective Removal of Lead Ion from Aqueous Solution
Abstract
:1. Introduction
2. Experimental Section
2.1. Apparatus and Reagents
2.2. Synthesis of Magnetic CoFe2O4/SBA–15
2.3. Synthesis of Amino Functionalized CoFe2O4/SBA–15
2.4. Single Factor Static Adsorption Experiment
3. Results and Discussion
3.1. Characterization of NH2–CoFe2O4/SBA–15
3.2. Influence of pH toward Removal Efficiency
3.3. Effect of Adsorbent Dosage on the Removal Efficiency
3.4. Influence of Adsorption Time and Adsorption Kinetics
3.5. Adsorption Isotherms Study
3.6. Thermodynamic Parameters Study
3.7. Evaluation of Adsorption Performance
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Models | Parameters | |
---|---|---|
Pseudo-first-order kinetic model | qe (mg·g−1) | 69.78 |
k1 (min−1) | 0.01974 | |
R2 | 0.9898 | |
Pseudo-second-order kinetic model | qe (mg·g−1) | 94.34 |
k2 (g·mg−1·min−1) | 0.0001660 | |
R2 | 0.9974 | |
Elovich kinetic model | α (mg·g−1·min−1) | 3.436 |
β (g·mg−1) | 0.05071 | |
R2 | 0.9842 |
Models | Parameters | |
---|---|---|
Henry | k | 6.447 |
R2 | 0.9782 | |
Langmuir | qm (mg·g−1) | 89.13 |
b (L·mg−1) | 0.2664 | |
R2 | 0.9641 | |
Freundlich | KF | 16.71 |
n | 1.470 | |
R2 | 0.9942 | |
Temkin | bT | 88.0 |
AT | 1.613 | |
R2 | 0.8659 |
T (K) | ΔG (kJ·mol−1) | ΔS (J·mol−1·K−1) | ΔH (kJ·mol−1) |
---|---|---|---|
298 | −5.45 | 121.5 | 30.76 |
308 | −6.66 | ||
318 | −7.88 |
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Guo, C.; Wang, Y.; Wang, F.; Wang, Y. Adsorption Performance of Amino Functionalized Magnetic Molecular Sieve Adsorbent for Effective Removal of Lead Ion from Aqueous Solution. Nanomaterials 2021, 11, 2353. https://doi.org/10.3390/nano11092353
Guo C, Wang Y, Wang F, Wang Y. Adsorption Performance of Amino Functionalized Magnetic Molecular Sieve Adsorbent for Effective Removal of Lead Ion from Aqueous Solution. Nanomaterials. 2021; 11(9):2353. https://doi.org/10.3390/nano11092353
Chicago/Turabian StyleGuo, Chuanen, Yingying Wang, Fangzheng Wang, and Yaoguang Wang. 2021. "Adsorption Performance of Amino Functionalized Magnetic Molecular Sieve Adsorbent for Effective Removal of Lead Ion from Aqueous Solution" Nanomaterials 11, no. 9: 2353. https://doi.org/10.3390/nano11092353