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| Flocculation Experiment on Removal of Uranium (VI) with Bio-polymeric Ferric Sulfate |
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Received:July 18, 2018
Revised:July 19, 2018
Accepted:July 23, 2018
Published Online:October 16, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.11.016 |
| KeyWord:bio-polymeric ferric sulfate; uranium; flocculation; kinetics |
| Author | Institution |
| GONG Zhi-heng |
东华理工大学水资源与环境工程学院 |
| GUO Yi-qin |
东华理工大学水资源与环境工程学院 |
| GUO Ya-dan |
东华理工大学水资源与环境工程学院 |
| WANG Xue-gang |
东华理工大学水资源与环境工程学院 |
| Li Peng |
东华理工大学水资源与环境工程学院 |
| Gao Bai |
东华理工大学水资源与环境工程学院 |
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| Abstract: |
| Bio-polymerized ferric sulfate flocculant was prepared by microbiological method to flocculate low-concentration uranium wastewater. Effects of pH value of U(VI) solution, flocculant dosage and initial concentration of U(VI) on flocculation effect were investigated. The results show that the optimum pH value of reaction is 5~7, and reaction equilibrium time is 5 min. Process of flocculation follows Lagergren quasi-secondary reaction kinetics model. After flocculation by bio-polymerized ferric sulfate, the residual uranium concentration is lower than the emission limit in the Radiation Protection Regulations for Uranium Processing and Fuel Manufacturing Facilities (EJ 1056-2005, 0.05 mg/L). |
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