Kinetics of Arsenic Removal in Waste Acid by the Combination of CuSO4 and Zero-Valent Iron
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Reagents
2.2. Experimental Methods
2.3. Analytical Procedures
2.4. Kinetics Analysis
3. Results and Discussion
3.1. Effect of Different Experimental Conditions on Arsenic Removal
3.1.1. Effect of Reaction Temperature
3.1.2. Effect of CuSO4 Concentration
3.1.3. Effect of the Molar Ratio of Iron to Arsenic
3.2. Characteristic Analysis of Arsenic-Containing Waste Residue
3.3. Kinetic Model of Arsenic Removal
3.4. Optimal Conditions for Arsenic Removal
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Composition | Cl | As | Pb | Cd | F | Cu | Fe | Zn | H2SO3 |
---|---|---|---|---|---|---|---|---|---|
Concentration (mg/L) | 1300 | 525 | 35.94 | 8.8 | 820 | 0.5 | 118.4 | 429.8 | >400 |
Reaction Temperature (°C) | Correlation Coefficient of Different Kinetic Models, R2 | |
---|---|---|
20 | 0.96234 | 0.98571 |
35 | 0.96812 | 0.98659 |
50 | 0.94352 | 0.96336 |
65 | 0.93705 | 0.94969 |
Fe/As | Correlation Coefficient of Different Kinetic Models, R2 | |
---|---|---|
4.5 | 0.99808 | 0.99629 |
5 | 0.99546 | 0.99857 |
5.5 | 0.97288 | 0.98517 |
6 | 0.93901 | 0.96783 |
CuSO4 Concentration (g/L) | Correlation Coefficient of Different Kinetic Models, R2 | |
---|---|---|
0.2 | 0.98884 | 0.98722 |
0.3 | 0.96012 | 0.96588 |
0.5 | 0.93398 | 0.95156 |
1 | 0.97334 | 0.98788 |
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Xi, Y.; Luo, Y.; Zou, J.; Li, J.; Liao, T.; Zhang, L.; Wang, C.; Li, X.; Lin, G. Kinetics of Arsenic Removal in Waste Acid by the Combination of CuSO4 and Zero-Valent Iron. Processes 2019, 7, 401. https://doi.org/10.3390/pr7070401
Xi Y, Luo Y, Zou J, Li J, Liao T, Zhang L, Wang C, Li X, Lin G. Kinetics of Arsenic Removal in Waste Acid by the Combination of CuSO4 and Zero-Valent Iron. Processes. 2019; 7(7):401. https://doi.org/10.3390/pr7070401
Chicago/Turabian StyleXi, Yunhao, Yongguang Luo, Jingtian Zou, Jing Li, Tianqi Liao, Libo Zhang, Chen Wang, Xiteng Li, and Guo Lin. 2019. "Kinetics of Arsenic Removal in Waste Acid by the Combination of CuSO4 and Zero-Valent Iron" Processes 7, no. 7: 401. https://doi.org/10.3390/pr7070401