| Autor: |
Li, Tengfei, Zhang, Yansheng, Zhang, Bo, Chang, Kexin, Jiao, Fen, Qin, Wenqing |
| Předmět: |
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| Zdroj: |
Separation Science & Technology; 2019, Vol. 54 Issue 11, p1862-1870, 9p |
| Abstrakt: |
This study investigated a potential method for the removal of arsenic from enargite leach solution containing 5.86 g/L As(V) by precipitation of magnesium ammonium arsenate (MAA). The experimental results showed the As(V) concentration can be reduced to 1.8 mg/L under the optimum conditions. The molar ratio NH4/Mg/As in precipitates formed at different pH values was checked by wet chemical analysis, indicating that some of by-products such as Mg3(AsO4)2, Mg(OH)2, and MgHAsO4 will be formed at the solution pH above or below pH 9.5. Notably, this study indicated MAA has a better ability for arsenic removal than magnesium arsenate. The precipitates also were characterized by XRD and SEM. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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