Phosphate interaction with calcined form of Mg-Al.CO3 hydrotalcite in aqueous solutions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F12%3A86082241" target="_blank" >RIV/61989100:27360/12:86082241 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27350/12:86082241

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Phosphate interaction with calcined form of Mg-Al.CO3 hydrotalcite in aqueous solutions

Popis výsledku v původním jazyce

In this study the sorption removal of phosphates from aqueous solutions was investigated. The sorbent used was Mg-Al-CO3 hydrotalcite with a molar ratio of 2:1 calcined at 450 oC. The retention capacity of cLDH was 2.88 mmol P/g. The sorption can be characterized by a kinetic model of the pseudo-second order. Laboratory tests proved the existence of two steps ? fast and slow. The fast step is associated with regeneration of the layered structure accompanied by surface adsorption of phosphates and is applied within the first 1.5 to 2 hours. Its rate is controlled by diffusion mechanisms. If abundance of phosphates is present in the solution, the slow step follows, i.e., phosphate intercalation into the interlayer, and eventually precipitation of aluminium phosphate occur. Different sorption mechanisms significantly influence desorption of phosphates.

Název v anglickém jazyce

Phosphate interaction with calcined form of Mg-Al.CO3 hydrotalcite in aqueous solutions

Popis výsledku anglicky

In this study the sorption removal of phosphates from aqueous solutions was investigated. The sorbent used was Mg-Al-CO3 hydrotalcite with a molar ratio of 2:1 calcined at 450 oC. The retention capacity of cLDH was 2.88 mmol P/g. The sorption can be characterized by a kinetic model of the pseudo-second order. Laboratory tests proved the existence of two steps ? fast and slow. The fast step is associated with regeneration of the layered structure accompanied by surface adsorption of phosphates and is applied within the first 1.5 to 2 hours. Its rate is controlled by diffusion mechanisms. If abundance of phosphates is present in the solution, the slow step follows, i.e., phosphate intercalation into the interlayer, and eventually precipitation of aluminium phosphate occur. Different sorption mechanisms significantly influence desorption of phosphates.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0082" target="_blank" >ED2.1.00/03.0082: Institut čistých technologií těžby a užití energetických surovin</a><br>

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Annales de Chimie - Science des Matériaux

ISSN

0151-9107

e-ISSN

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Svazek periodika

37

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

10

Strana od-do

11-20

Kód UT WoS článku

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EID výsledku v databázi Scopus

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