Sorption of metal oxoanions by chemically modified alginic acid sorbents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F17%3A43913461" target="_blank" >RIV/60461373:22320/17:43913461 - isvavai.cz</a>

Výsledek na webu

<a href="http://iel.vscht.cz/" target="_blank" >http://iel.vscht.cz/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Sorption of metal oxoanions by chemically modified alginic acid sorbents

Popis výsledku v původním jazyce

Chemically modified alginic acid was used as sorbent of metal oxoanions (W(VI), Mo(VI), Sb(III), V(V) and As(V)). All experiments were carried out in dynamic column sorption mode. Chemicall modifications such as esterification, crosslinking or granulation with PAN were important for the mechanical and chemical stability of prepared sorbents, but sorption of metal oxoanions was not very successful. The best results were achived with sorbent AA-2 ? alginic acid crosslinked with diethylenetriamine and azide ? for sorption of V(V) and Mo(VI). Sorbent AA-4 ? which was crosslinked with epichlorohydrin could be used for sorption of W(VI) after conditioning with HCl. Sorbent AA?1 (granulated with PAN) needed to be conditioned with Fe 3+ ions. Similarly, sorbent AA-4 could be used for As(V) sorption after the Fe 3+ conditioning. In all the cases, the sorbents could not last many sorption-desorption cycles and the breakthrough capacities were not very high (hundreds of mg per L of sorbent). Price of sorbents prepared by modification of alginic acid was inadequate to their sorption ability.

Název v anglickém jazyce

Sorption of metal oxoanions by chemically modified alginic acid sorbents

Popis výsledku anglicky

Chemically modified alginic acid was used as sorbent of metal oxoanions (W(VI), Mo(VI), Sb(III), V(V) and As(V)). All experiments were carried out in dynamic column sorption mode. Chemicall modifications such as esterification, crosslinking or granulation with PAN were important for the mechanical and chemical stability of prepared sorbents, but sorption of metal oxoanions was not very successful. The best results were achived with sorbent AA-2 ? alginic acid crosslinked with diethylenetriamine and azide ? for sorption of V(V) and Mo(VI). Sorbent AA-4 ? which was crosslinked with epichlorohydrin could be used for sorption of W(VI) after conditioning with HCl. Sorbent AA?1 (granulated with PAN) needed to be conditioned with Fe 3+ ions. Similarly, sorbent AA-4 could be used for As(V) sorption after the Fe 3+ conditioning. In all the cases, the sorbents could not last many sorption-desorption cycles and the breakthrough capacities were not very high (hundreds of mg per L of sorbent). Price of sorbents prepared by modification of alginic acid was inadequate to their sorption ability.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10503 - Water resources

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ion Exchange Letters

ISSN

1803-4039

e-ISSN

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Svazek periodika

10

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

1-5

Kód UT WoS článku

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EID výsledku v databázi Scopus

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