The removal of chloride from solutions with various cations using magnesium-aluminum oxide

Tomohito Kameda; Toshiaki Yoshioka; Tatsunosuke Hoshi; Miho Uchida; Akitsugu Okuwaki

doi:10.1016/j.seppur.2004.05.010

The removal of chloride from solutions with various cations using magnesium-aluminum oxide

Tomohito Kameda, Toshiaki Yoshioka, Tatsunosuke Hoshi, Miho Uchida, Akitsugu Okuwaki

Tohoku University

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

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, Mg_0.80Al _0.20O_1.10, prepared by the thermal decomposition of a hydrotalcite-like compound, Mg_0.80Al_0.20(OH) ₂(CO₃)_0.10·0.78H₂O. The degree of Cl^- removal from solution increased with the amount of Mg_0.80Al_0.20O_1.10 used. When Mg _0.80Al_0.20O_1.10 was added to 0.5 M Cl ^- solutions of HCl, MgCl₂, AlCl₃, and NH ₄Cl in a Mg_0.80Al_0.20O_1.10/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 Mg_0.80Al_0.20O _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
Pages (from-to)	25-29
Number of pages	5
Journal	Separation and Purification Technology
Volume	42
Issue number	1
DOIs	https://doi.org/10.1016/j.seppur.2004.05.010
Publication status	Published - 2005 Mar

Keywords

Buffering action
Chloride solution
Hydrotalcite-like compound
Magnesium-aluminum oxide
Removal of chloride

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10.1016/j.seppur.2004.05.010

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title = "The removal of chloride from solutions with various cations using magnesium-aluminum oxide",

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.",

keywords = "Buffering action, Chloride solution, Hydrotalcite-like compound, Magnesium-aluminum oxide, Removal of chloride",

author = "Tomohito Kameda and Toshiaki Yoshioka and Tatsunosuke Hoshi and Miho Uchida and Akitsugu Okuwaki",

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AU - Yoshioka, Toshiaki

AU - Hoshi, Tatsunosuke

AU - Uchida, Miho

AU - Okuwaki, Akitsugu

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N2 - 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.

AB - 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.

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KW - Chloride solution

KW - Hydrotalcite-like compound

KW - Magnesium-aluminum oxide

KW - Removal of chloride

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The removal of chloride from solutions with various cations using magnesium-aluminum oxide

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Keywords

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