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Statements

Subject Item
n2:RIV%2F61989100%3A27360%2F12%3A86082241%21RIV14-MSM-27360___
rdf:type
n9:Vysledek skos:Concept
dcterms:description
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. 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.
dcterms:title
Phosphate interaction with calcined form of Mg-Al.CO3 hydrotalcite in aqueous solutions Phosphate interaction with calcined form of Mg-Al.CO3 hydrotalcite in aqueous solutions
skos:prefLabel
Phosphate interaction with calcined form of Mg-Al.CO3 hydrotalcite in aqueous solutions Phosphate interaction with calcined form of Mg-Al.CO3 hydrotalcite in aqueous solutions
skos:notation
RIV/61989100:27360/12:86082241!RIV14-MSM-27360___
n9:predkladatel
n10:orjk%3A27360
n3:aktivita
n4:P n4:V n4:Z
n3:aktivity
P(ED2.1.00/03.0082), V, Z(MSM6198910016)
n3:cisloPeriodika
1
n3:dodaniDat
n15:2014
n3:domaciTvurceVysledku
n6:5907020 n6:9404252 n6:3462633
n3:druhVysledku
n19:J
n3:duvernostUdaju
n12:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
158516
n3:idVysledku
RIV/61989100:27360/12:86082241
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Hydrotalcite, Calcination, Phosphate sorption, Kinetics
n3:klicoveSlovo
n14:Phosphate%20sorption n14:Calcination n14:Kinetics n14:Hydrotalcite
n3:kodStatuVydavatele
FR - Francouzská republika
n3:kontrolniKodProRIV
[E0885F0E6239]
n3:nazevZdroje
Annales de Chimie - Science des Matériaux
n3:obor
n20:CI
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n8:ED2.1.00%2F03.0082
n3:rokUplatneniVysledku
n15:2012
n3:svazekPeriodika
37
n3:tvurceVysledku
Matýsek, Dalibor Kostura, Bruno Kukutschová, Jana Leško, Juraj
n3:zamer
n16:MSM6198910016
s:issn
0151-9107
s:numberOfPages
10
n13:organizacniJednotka
27360