Sorption of metal oxoanions by chemically modified alginic acid sorbents

Result code in 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>
Result on the web
<a href="http://iel.vscht.cz/" target="_blank" >http://iel.vscht.cz/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Sorption of metal oxoanions by chemically modified alginic acid sorbents
Original language description
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.
Czech name
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Czech description
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Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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