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Statements

Subject Item
n2:RIV%2F60460709%3A41330%2F14%3A61117%21RIV15-TA0-41330___
rdf:type
skos:Concept n11:Vysledek
dcterms:description
This work investigates the mechanisms behind Cr(VI) biosorption/reduction on three biomaterials (brewers draff, grape waste and synthetic humic acid). Coupled Cr isotope analysis with ICP-OES, XPS and SEM was tested as a novel approach to study the reduction of Cr(VI) by the biomaterials. The Cr(VI) biosorption process was accompanied with heavier Cr isotopes enrichment in the remaining Cr(VI) fraction. A significant fractionation of Cr stable isotopes was observed with no significant pH effect; ?53Cr of the remaining fraction ranged from 0,2 to 1,9 while ?53Cr of the product (sorbed Cr) ranged from -1,2 to -2,8. The Rayleigh fractionation model fitted well the measured data and Cr isotope analysis provides thus an efficient tool to quantify Cr(VI) reduction by different biomaterials. In general, the sorption/reduction potential of the three studied biomaterials decreased in the following order: grape waste > humic acids > brewers draff. This work investigates the mechanisms behind Cr(VI) biosorption/reduction on three biomaterials (brewers draff, grape waste and synthetic humic acid). Coupled Cr isotope analysis with ICP-OES, XPS and SEM was tested as a novel approach to study the reduction of Cr(VI) by the biomaterials. The Cr(VI) biosorption process was accompanied with heavier Cr isotopes enrichment in the remaining Cr(VI) fraction. A significant fractionation of Cr stable isotopes was observed with no significant pH effect; ?53Cr of the remaining fraction ranged from 0,2 to 1,9 while ?53Cr of the product (sorbed Cr) ranged from -1,2 to -2,8. The Rayleigh fractionation model fitted well the measured data and Cr isotope analysis provides thus an efficient tool to quantify Cr(VI) reduction by different biomaterials. In general, the sorption/reduction potential of the three studied biomaterials decreased in the following order: grape waste > humic acids > brewers draff.
dcterms:title
Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption
skos:prefLabel
Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption
skos:notation
RIV/60460709:41330/14:61117!RIV15-TA0-41330___
n4:aktivita
n8:S n8:P
n4:aktivity
P(TA01021055), S
n4:cisloPeriodika
95
n4:dodaniDat
n6:2015
n4:domaciTvurceVysledku
n9:4093216 n9:3943933 n9:9340807
n4:druhVysledku
n5:J
n4:duvernostUdaju
n15:S
n4:entitaPredkladatele
n14:predkladatel
n4:idSjednocenehoVysledku
22972
n4:idVysledku
RIV/60460709:41330/14:61117
n4:jazykVysledku
n17:eng
n4:klicovaSlova
biosorption, chromium(VI), isotope fractionation, rayleigh fractionation model, reduction
n4:klicoveSlovo
n10:reduction n10:chromium%28VI%29 n10:isotope%20fractionation n10:rayleigh%20fractionation%20model n10:biosorption
n4:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n4:kontrolniKodProRIV
[36F41F74D1BC]
n4:nazevZdroje
Chemosphere
n4:obor
n13:DD
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
4
n4:projekt
n12:TA01021055
n4:rokUplatneniVysledku
n6:2014
n4:svazekPeriodika
2014
n4:tvurceVysledku
Čadková, Eva Chrastný, Vladislav Komárek, Michael Šillerová, Hana
n4:wos
000328868400056
s:issn
0045-6535
s:numberOfPages
6
n18:organizacniJednotka
41330