HCa2Nb3O10·1.5H2O as an Ion Exchanger for NH4 + Ion Removal
The removal of NH4 + on protonated layered perovskite oxide HCa2Nb3O10·1.5H2O from an aqueous solution at room temperature using a batch method was investigated. The protons situated between the layers of the material are exchangeable with cations in solution. Distribution coefficient values, K d (c...
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| Veröffentlicht in: | Industrial & engineering chemistry research 2008-01, Vol.47 (1), p.176-179 |
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| container_title | Industrial & engineering chemistry research |
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| creator | Chitrakar, Ramesh Tezuka, Satoko Sonoda, Akinari Kakita, Hirotaka Sakane, Kohji Ooi, Kenta Hirotsu, Takahiro |
| description | The removal of NH4 + on protonated layered perovskite oxide HCa2Nb3O10·1.5H2O from an aqueous solution at room temperature using a batch method was investigated. The protons situated between the layers of the material are exchangeable with cations in solution. Distribution coefficient values, K d (cm3/g), of Na+, K+, and NH4 + cations at pH 2.2 from a mixed solution (NaCl, KCl, and NH4Cl) containing 1.0 mmol/dm3 of each ion were 1600 for K+, 2200 for Na+, and 10 500 for NH4 +. The effect of solution pH on the ion exchange in aqueous solution (NH4Cl + HCl or NH4OH) showed a maximum uptake of 34 mg of NH4/g at around pH 6. The results indicate that the material is very effective for removing NH4 + at concentrations of less than 10 mg of NH4/dm3. |
| doi_str_mv | 10.1021/ie0704389 |
| format | Article |
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The protons situated between the layers of the material are exchangeable with cations in solution. Distribution coefficient values, K d (cm3/g), of Na+, K+, and NH4 + cations at pH 2.2 from a mixed solution (NaCl, KCl, and NH4Cl) containing 1.0 mmol/dm3 of each ion were 1600 for K+, 2200 for Na+, and 10 500 for NH4 +. The effect of solution pH on the ion exchange in aqueous solution (NH4Cl + HCl or NH4OH) showed a maximum uptake of 34 mg of NH4/g at around pH 6. 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Eng. Chem. Res</addtitle><date>2008-01-02</date><risdate>2008</risdate><volume>47</volume><issue>1</issue><spage>176</spage><epage>179</epage><pages>176-179</pages><issn>0888-5885</issn><eissn>1520-5045</eissn><coden>IECRED</coden><abstract>The removal of NH4 + on protonated layered perovskite oxide HCa2Nb3O10·1.5H2O from an aqueous solution at room temperature using a batch method was investigated. The protons situated between the layers of the material are exchangeable with cations in solution. Distribution coefficient values, K d (cm3/g), of Na+, K+, and NH4 + cations at pH 2.2 from a mixed solution (NaCl, KCl, and NH4Cl) containing 1.0 mmol/dm3 of each ion were 1600 for K+, 2200 for Na+, and 10 500 for NH4 +. The effect of solution pH on the ion exchange in aqueous solution (NH4Cl + HCl or NH4OH) showed a maximum uptake of 34 mg of NH4/g at around pH 6. The results indicate that the material is very effective for removing NH4 + at concentrations of less than 10 mg of NH4/dm3.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><doi>10.1021/ie0704389</doi><tpages>4</tpages></addata></record> |
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| subjects | Applied sciences Chemical engineering Exact sciences and technology Ion exchange |
| title | HCa2Nb3O10·1.5H2O as an Ion Exchanger for NH4 + Ion Removal |
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