Hydrosodalite ion exchange in saturated Ca(OH)2 solution

• Autorzy: Vaičiukyniene D. , Baltakys K. , Kantautas A.
• Języki publikacji: EN

Abstrakty

EN

The possibility of substituting Na+ ions contained in pure hydrosodalite crystal structure with Ca2+ ions in saturated Ca(OH)2 solution has been examined in the temperature range from 25 °C to 95 °C. It was found that temperature strongly influences the hydrosodalite ion exchange: upon increasing temperature only by 5 °C (from 25 to 30 °C) Ca2+ the time required for Ca2+ions to be incorporated within the hydrosodalite crystal structure is reduced by the factor of 3. With the increase of temperature from 45 °C to 65 °C almost all the Ca2+ ions, initially contained in the Ca(OH)2 solution, become incorporated in the hydrosodalite structure after 5 min However, high temperature has an adverse effect on the sorption process (Ca2+ ions will not be incorporated within the hydrosodalite structure before 10 min have elapsed). Partly reversible ion exchange reactions of hydrosodalite are characteristic at temperatures higher than 30 °C). The structure of hydrosodalite crystals remains stable when performing ion exchange reactions at 25-95 °C temperature.

Słowa kluczowe

EN

hydrosodalite; ion exchange

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2009
• Tom: Vol. 27, No. 2
• Strony: 417--426
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Vaičiukyniene D.

autor

Baltakys K.

autor

Kantautas A.

• Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu str. 19, 50254 Kaunas, Lithuania

Bibliografia

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