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| Zeolite@Fe3O4 for Treatment of Nitrogen and Phosphorus Wastewater |
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Received:December 25, 2020
Revised:January 02, 2021
Accepted:January 04, 2021
Published Online:May 20, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.06.017 |
| KeyWord:coprecipitation method; zeolite@Fe3O4; ammonia nitrogen; phosphate; PRB |
| Author | Institution |
| ZHOU Zhen |
东华理工大学 核资源与环境国家重点实验室 |
| ZHANG Wei-ming |
东华理工大学 核资源与环境国家重点实验室 |
| CHEN Jia-hong |
东华理工大学 核资源与环境国家重点实验室 |
| CHEN Jun-hua |
东华理工大学 核资源与环境国家重点实验室 |
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| Abstract: |
| Zeolite@Fe3O4 composite was prepared by co-precipitation method. Effects of pH value, adsorption kinetics, isothermal adsorption model and thermodynamics on adsorption of simulated ammonia nitrogen wastewater were investigated by static adsorption experiment. The results show that when pH value of solution is 6, adsorption capacity of zeolite@Fe3O4 composite to ammonium in water reaches the highest value. Adsorption capacity of zeolite@Fe3O4 composite for phosphorus in water gradually drops with increase of pH value of solution. Adsorption kinetics of ammonia nitrogen and phosphorus in water by zeolite@Fe3O4 composite satisfies well the quasi-secondary kinetic model. The linear fitting results of Langmuir adsorption isotherm model shows that the maximum theoretical unit adsorption capacity of ammonia nitrogen and phosphorus are 7.92 mg/g and 9.09 mg/g respectively. |
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