Recovery of ammonium alum from waste solutions with a varying ratio of NH4 to Al in groundwater remediation after underground uranium leaching

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F07%3A00087604" target="_blank" >RIV/61388980:_____/07:00087604 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Recovery of ammonium alum from waste solutions with a varying ratio of NH4 to Al in groundwater remediation after underground uranium leaching
Original language description
Experiments with cooling crystallization of ammonium alum, (NH4Al(SO4)(2).12H(2)O), were performed with concentrated multicomponent acidic solutions (originating from underground uranium leaching in Straz pod Ralskem area, Czech Republic, and containingas the principal components Al3+, NH4+, and SO42- ions) as well as with similar solutions prepared in the laboratory. The yield of NH4Al(SO4)(2).12H(2)O crystals increased significantly with the increasing NH4+/Al3+ molar ratio, in accordance with pertinent solubility data. The purifying effect of crystallization was quantified by means of the distribution coefficients, characterizing the uptake of ionic impurities to alum crystals; the tendency of cationic impurities to crystallize with NH4Al(SO4)(2).
Czech name
Získávání kamence hlinitoamonného z odpadních roztoků s proměnným poměrem NH4 k Al při sanaci podzemních vod po těžbě uranu podzemním loužením
Czech description
Získávání kamence hlinitoamonného z odpadních roztoků s proměnným poměrem NH4 k Al při sanaci podzemních vod po těžbě uranu podzemním loužením.

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
<a href="/en/project/GA203%2F04%2F1574" target="_blank" >GA203/04/1574: Formation of calcium sulphate incrustations in crystallization of substances from concentrated sulphate solutions</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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