| Autor: |
Liping, Liang, Yuanyuan, Xue, Gangliang, Tian, Qiaole, Mao, Zixuan, Lou, Qian, Wu, Qian, Wang, Juanshan, Du, Xu, Meng |
| Rok vydání: |
2019 |
| Zdroj: |
RSC advances. 9(45) |
| ISSN: |
2046-2069 |
| Popis: |
The application of nano zero-valent iron (nZVI) in water environment was limited by its easily aggregation and potential biological toxicity. In this study, biochar embedded nZVI (BC-nZVI) was prepared by carbon-thermal reduction method, and the SEM-EDX mapping results showed that nZVI was successfully embedded on biochar. Meanwhile, BC-nZVI with the optimal Fe/C of 2/1 showed a similar Se(vi) removal efficiency to pure nZVI. Effects of pH, BC-nZVI loading, and initial Se(vi) concentration were studied. Se(vi) removal rates (at 30 min) by BC-nZVI at pH 4.0 and 5.0 were 98.2% and 95.9%, respectively. But Se(vi) removal rate (at 30 min) was sharply decreased to 25.8% at pH 6.0. With the increase of BC-nZVI loading from 0.5 g L |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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