Phosphate Removal from Secondary Effluents Using Coal Gangue Loaded with Zirconium Oxide
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Chemicals
2.2. Preparation of CCG-Zr
2.3. Characterization of CCG-Zr and Analysis Methods
2.4. Phosphate Removal Experiment
2.4.1. Kinetic Experiments
2.4.2. Effect of pH
2.4.3. Effect of Dosage
2.4.4. Isotherms Experiment
2.4.5. Regeneration of Adsorbent
2.5. Data Processing
3. Results and Discussion
3.1. Characterization of CCG-Zr
3.2. Effect of Calcinated Temperature and ZrOCl2·8H2O/CCG Mass Ratio
3.3. Phosphate Adsorption Experiments
3.3.1. Effect of Contact Time
3.3.2. Effect of pH
3.3.3. Effect of Adsorbent Dose
3.3.4. Effect of Phosphate Concentration
3.3.5. Regeneration of Adsorbent
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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% | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | Na2O | K2O | C |
---|---|---|---|---|---|---|---|---|
FCG | 26.96 | 13.97 | 2.027 | 0.407 | 0.363 | 0.20 | 0.759 | 54.6 |
CCG | 48.57 | 23.86 | 2.66 | 0.88 | 0.74 | 0.23 | 1.65 | 20.40 |
Adsorption Isotherms | Linear Forms | Equation of Linear Regression | Parameters and Correlation Coefficient |
---|---|---|---|
Langmuir | 1/qe = 1/(bqmCe) + 1/qm | 1/qe = 1/(bqmCe) + 0.5906 | R2 = 0.9674 |
Freundlich | lnqe = 1/nlnCe + lnKF | lnqe = 0.3188lnCe + 0.027 | R2 = 0.9747 |
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Xiong, J.; Zang, L.; Zha, J.; Mahmood, Q.; He, Z. Phosphate Removal from Secondary Effluents Using Coal Gangue Loaded with Zirconium Oxide. Sustainability 2019, 11, 2453. https://doi.org/10.3390/su11092453
Xiong J, Zang L, Zha J, Mahmood Q, He Z. Phosphate Removal from Secondary Effluents Using Coal Gangue Loaded with Zirconium Oxide. Sustainability. 2019; 11(9):2453. https://doi.org/10.3390/su11092453
Chicago/Turabian StyleXiong, Jibing, Li Zang, Jianfeng Zha, Qaisar Mahmood, and Zhenli He. 2019. "Phosphate Removal from Secondary Effluents Using Coal Gangue Loaded with Zirconium Oxide" Sustainability 11, no. 9: 2453. https://doi.org/10.3390/su11092453