Separation of lithium isotope by strong acid ion exchange resin

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Separation of lithium isotope by strong acid ion exchange resin

Popis výsledku v původním jazyce

Our work is also focused on type, concentration and flow rate of mobile phase (eluent) and production of narrow particle fraction of ion exchange resin. As a stationary phase was used narrow particle fraction of Dowex 50 WX 2 cation exchanger having diameter of 150 - 200 ?m and total exchange capacity of 1.31 mmol.mL-1 packed in glass column. To obtain narrow fraction of the resin, wet screening using vibratory sieve shaker was necessary because of irregular swelling of dry-sieved resin. The chromatographic peaks were evaluated for three different columns of inner diameter of 5 mm and different heights - 350 to 2000 mm. Based on the measurement of chromatographic peak, optimal concentration of ammonium chloride mobile phase was 0.5 mol.L-1. For practical use, isotope separation process must have more separations steps. The initial isotope ratio (7Li/6Li) of lithium nitrate 18.66, changed after first separation step to 18.37 and after eighth separation step the value was 15.9. The separation factor S calculated by equation [1] was found to be 1.015.

Název v anglickém jazyce

Separation of lithium isotope by strong acid ion exchange resin

Popis výsledku anglicky

Our work is also focused on type, concentration and flow rate of mobile phase (eluent) and production of narrow particle fraction of ion exchange resin. As a stationary phase was used narrow particle fraction of Dowex 50 WX 2 cation exchanger having diameter of 150 - 200 ?m and total exchange capacity of 1.31 mmol.mL-1 packed in glass column. To obtain narrow fraction of the resin, wet screening using vibratory sieve shaker was necessary because of irregular swelling of dry-sieved resin. The chromatographic peaks were evaluated for three different columns of inner diameter of 5 mm and different heights - 350 to 2000 mm. Based on the measurement of chromatographic peak, optimal concentration of ammonium chloride mobile phase was 0.5 mol.L-1. For practical use, isotope separation process must have more separations steps. The initial isotope ratio (7Li/6Li) of lithium nitrate 18.66, changed after first separation step to 18.37 and after eighth separation step the value was 15.9. The separation factor S calculated by equation [1] was found to be 1.015.

Druh

D - Stať ve sborníku

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 4th international conference on methods and materials for separation processes

ISBN

978-83-7493-949-2

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

37-39

Název nakladatele

OFICYNA WYDAWNICZA POLITECHNIKI WROCŁAWSKIEJ

Místo vydání

Wroclaw

Místo konání akce

Brunów

Datum konání akce

4. 9. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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