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Statements

Subject Item
n2:RIV%2F60461373%3A22320%2F08%3A00019820%21RIV09-MSM-22320___
rdf:type
n7:Vysledek skos:Concept
dcterms:description
Reduction of V(V) to V(IV) was performed at carbon felt cathode at a constant potential of - 1500 mV vs. Ag/AgCl. Adsorption of vanadium species onto the sorbent Purolite D 4123 was investigated in the pH range 2.5 to 5. V(V) was efficiently adsorbed throughout pH range studied, whereas V(IV) was barely adsorbed at pHs of 2.5 to 3.5 and it was re-oxidized to V(V) at higher pHs. In column experiments, V(V) was strongly adsorbed . V(IV) broke through the column readily and reached the inlet concentration within 60 BV. Desorption was carried out with combination of 1 M HCl and 1M NaOH, consequently, and the total vanadium recovery was about 100 % Reduction of V(V) to V(IV) was performed at carbon felt cathode at a constant potential of - 1500 mV vs. Ag/AgCl. Adsorption of vanadium species onto the sorbent Purolite D 4123 was investigated in the pH range 2.5 to 5. V(V) was efficiently adsorbed throughout pH range studied, whereas V(IV) was barely adsorbed at pHs of 2.5 to 3.5 and it was re-oxidized to V(V) at higher pHs. In column experiments, V(V) was strongly adsorbed . V(IV) broke through the column readily and reached the inlet concentration within 60 BV. Desorption was carried out with combination of 1 M HCl and 1M NaOH, consequently, and the total vanadium recovery was about 100 % Redukce V(V) na V(IV) byla provedena na katodě z uhlíkové plsti za konstantního potenciálu 1500 mV vs. Ag/AgCl. Sorpce vanadu na sorbentu D 4123 byla sledována v rozmezí pH 2,5 až 5. V(V) byl sorbován v celém rozmezí pH zatímco V(IV) se v rozmezí pH 2,5 až 3,5 sorboval pouze zanedbatelně. Při vyšším pH docházelo ke zpětné oxidaci na V(V). Při kolonových experimentech byl V(V)silně adsorbován. V(IV) se na koloně zachycoval jen slabě a dosáhl vstupní koncentrace po projití 60ti kolonových objemů. Desorpce vanadu byla provedena postupně pomocí 1 M HCl a 1M NaOH a celkové vytěsněné množství bylo skoro 100%.
dcterms:title
Porovnání sorpce elektrochemicky generovaného V(IV) a V(V) na selektivním sorbentu Comparison of sorption of electrochemically generated V(IV) and V(V) onto selective sorbent Comparison of sorption of electrochemically generated V(IV) and V(V) onto selective sorbent
skos:prefLabel
Porovnání sorpce elektrochemicky generovaného V(IV) a V(V) na selektivním sorbentu Comparison of sorption of electrochemically generated V(IV) and V(V) onto selective sorbent Comparison of sorption of electrochemically generated V(IV) and V(V) onto selective sorbent
skos:notation
RIV/60461373:22320/08:00019820!RIV09-MSM-22320___
n3:aktivita
n14:Z
n3:aktivity
Z(MSM6046137304)
n3:cisloPeriodika
2
n3:dodaniDat
n11:2009
n3:domaciTvurceVysledku
n4:4033027
n3:druhVysledku
n12:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
360659
n3:idVysledku
RIV/60461373:22320/08:00019820
n3:jazykVysledku
n17:eng
n3:klicovaSlova
electrochemical reduction; vanadium(IV); vanadium(V) oxoanions; selective sorption
n3:klicoveSlovo
n9:electrochemical%20reduction n9:selective%20sorption n9:vanadium%28IV%29 n9:vanadium%28V%29%20oxoanions
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[DE27E2DAD393]
n3:nazevZdroje
Ion Exchange Letters
n3:obor
n5:CI
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n11:2008
n3:svazekPeriodika
1
n3:tvurceVysledku
Jelínek, Luděk Černoušek, Tomáš Ďurišová, Jana
n3:zamer
n18:MSM6046137304
s:issn
1803-4039
s:numberOfPages
3
n16:organizacniJednotka
22320