About: Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption

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About: Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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. (en)
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 (en)
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 (en)
skos:notation	RIV/60460709:41330/14:61117!RIV15-TA0-41330___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(TA01021055), S
http://linked.open...iv/cisloPeriodika	95
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Chrastný, Vladislav Šillerová, Hana Komárek, Michael
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká zemědělská univerzita v Praze / Fakulta životního prostředí
http://linked.open...dnocenehoVysledku	22972
http://linked.open...ai/riv/idVysledku	RIV/60460709:41330/14:61117
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	biosorption, chromium(VI), isotope fractionation, rayleigh fractionation model, reduction (en)
http://linked.open.../riv/klicoveSlovo	biosorption chromium(VI) isotope fractionation rayleigh fractionation model reduction
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[36F41F74D1BC]
http://linked.open...i/riv/nazevZdroje	Chemosphere
http://linked.open...in/vavai/riv/obor	DD
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Chromium isotopes as an indicator of natural attenuation of water pollution: Introducing mass-spectrometry based technology
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	2014
http://linked.open...iv/tvurceVysledku	Komárek, Michael Chrastný, Vladislav Čadková, Eva Šillerová, Hana
http://linked.open...ain/vavai/riv/wos	000328868400056
issn	0045-6535
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	41330

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