Abstract
We investigated the removal of chloride from various solutions (NaCl, HCl, MgCl2, AlCl3, CaCl2, and NH4Cl) at 60 °C for 3 h using magnesium-aluminum oxide, Mg0.80Al 0.20O1.10, prepared by the thermal decomposition of a hydrotalcite-like compound, Mg0.80Al0.20(OH) 2(CO3)0.10·0.78H2O. The degree of Cl- removal from solution increased with the amount of Mg0.80Al0.20O1.10 used. When Mg 0.80Al0.20O1.10 was added to 0.5 M Cl - solutions of HCl, MgCl2, AlCl3, and NH 4Cl in a Mg0.80Al0.20O1.10/Cl - molar ratio of 8.75, the degree of Cl- removal exceeded 95%. The degree of Cl- removal from NaCl and CaCl2 solutions was slightly lower, approximately 80 and 90%, respectively. These results reveal that both the amount of Mg0.80Al0.20O 1.10 added to chloride solution and the nature of the cations in the solution affect the efficiency of Cl- removal from solution.
Original language | English |
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Pages (from-to) | 25-29 |
Number of pages | 5 |
Journal | Separation and Purification Technology |
Volume | 42 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2005 Mar |
Keywords
- Buffering action
- Chloride solution
- Hydrotalcite-like compound
- Magnesium-aluminum oxide
- Removal of chloride
ASJC Scopus subject areas
- Analytical Chemistry
- Filtration and Separation