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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F13%3A33146130%21RIV14-GA0-15310___
rdf:type
n15:Vysledek skos:Concept
rdfs:seeAlso
http://www.sciencedirect.com/science/article/pii/S0045653513011879
dcterms:description
Arsenates, when present in water resources, constitute a risk to human health. In order to remove them, various technologies have been developed; out of them, sorption approach is widely adopted employing a wide spectrum of suitable sorbent materials. Nanoparticles of iron oxide are frequently used due to a high surface area and ability to control them by external magnetic field. In this work, we report on a simple and cheap synthesis of ultrafine iron(III) oxide nanoparticles with a narrow size distribution and their exploitation in the field of arsenate removal from aqueous environment. It is shown that the adsorption capacity is enhanced by a mesoporous nature of nanoparticle arrangement in their system due to strong magnetic interactions they evolve between nanoparticles. A complete arsenate removal is achieved at Fe/As ratio equal to similar to 20/1 and at pH in the range from 5 to 7.6. Under these conditions, the arsenates are completely removed within several minutes of treatment. Among iron-oxide-based nanosystems synthesized and employed in arsenate remediation issues so far, our assembly of iron(III) oxide nanoparticles shows the highest Freundlich adsorption coefficient and equilibrium sorption capacity under conditions maintained. Taking into account simple and low-cost preparation procedure, product high yields, almost monodispersed character, room-temperature superparamagnetic behavior, and strong magnetic response under small applied magnetic fields, the synthesized iron(III) oxide nanoparticles can be regarded as a promising candidate for exploitation in the field of removing undesired toxic pollutants from various real water systems. Arsenates, when present in water resources, constitute a risk to human health. In order to remove them, various technologies have been developed; out of them, sorption approach is widely adopted employing a wide spectrum of suitable sorbent materials. Nanoparticles of iron oxide are frequently used due to a high surface area and ability to control them by external magnetic field. In this work, we report on a simple and cheap synthesis of ultrafine iron(III) oxide nanoparticles with a narrow size distribution and their exploitation in the field of arsenate removal from aqueous environment. It is shown that the adsorption capacity is enhanced by a mesoporous nature of nanoparticle arrangement in their system due to strong magnetic interactions they evolve between nanoparticles. A complete arsenate removal is achieved at Fe/As ratio equal to similar to 20/1 and at pH in the range from 5 to 7.6. Under these conditions, the arsenates are completely removed within several minutes of treatment. Among iron-oxide-based nanosystems synthesized and employed in arsenate remediation issues so far, our assembly of iron(III) oxide nanoparticles shows the highest Freundlich adsorption coefficient and equilibrium sorption capacity under conditions maintained. Taking into account simple and low-cost preparation procedure, product high yields, almost monodispersed character, room-temperature superparamagnetic behavior, and strong magnetic response under small applied magnetic fields, the synthesized iron(III) oxide nanoparticles can be regarded as a promising candidate for exploitation in the field of removing undesired toxic pollutants from various real water systems.
dcterms:title
Remarkable efficiency of ultrafine superparamagnetic iron(III) oxide nanoparticles toward arsenate removal from aqueous environment Remarkable efficiency of ultrafine superparamagnetic iron(III) oxide nanoparticles toward arsenate removal from aqueous environment
skos:prefLabel
Remarkable efficiency of ultrafine superparamagnetic iron(III) oxide nanoparticles toward arsenate removal from aqueous environment Remarkable efficiency of ultrafine superparamagnetic iron(III) oxide nanoparticles toward arsenate removal from aqueous environment
skos:notation
RIV/61989592:15310/13:33146130!RIV14-GA0-15310___
n15:predkladatel
n16:orjk%3A15310
n3:aktivita
n17:S n17:P
n3:aktivity
P(ED2.1.00/03.0058), P(EE2.3.20.0056), P(GAP304/10/1316), P(KAN115600801), S
n3:cisloPeriodika
11
n3:dodaniDat
n13:2014
n3:domaciTvurceVysledku
n4:5207193 n4:9251189 n4:1733028 n4:7621175 n4:7321023 n4:5892961 n4:4675193 n4:1448870
n3:druhVysledku
n12:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
102302
n3:idVysledku
RIV/61989592:15310/13:33146130
n3:jazykVysledku
n6:eng
n3:klicovaSlova
environment; aqueous; removal; arsenate; toward; nanoparticles; oxide; ironIII; superparamagnetic; ultrafine; efficiency; Remarkable
n3:klicoveSlovo
n5:nanoparticles n5:toward n5:ultrafine n5:arsenate n5:aqueous n5:removal n5:ironIII n5:environment n5:efficiency n5:superparamagnetic n5:Remarkable n5:oxide
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[42568D9776B0]
n3:nazevZdroje
Chemosphere
n3:obor
n11:CF
n3:pocetDomacichTvurcuVysledku
8
n3:pocetTvurcuVysledku
8
n3:projekt
n9:KAN115600801 n9:EE2.3.20.0056 n9:GAP304%2F10%2F1316 n9:ED2.1.00%2F03.0058
n3:rokUplatneniVysledku
n13:2013
n3:svazekPeriodika
93
n3:tvurceVysledku
Kvítek, Libor Tuček, Jiří Kilianová, Martina Zbořil, Radek Kolařík, Jan Panáček, Aleš Filip, Jan Prucek, Robert
n3:wos
000327570000006
s:issn
0045-6535
s:numberOfPages
8
n7:doi
10.1016/j.chemosphere.2013.08.071
n18:organizacniJednotka
15310