Recycling of Spent Nickel Catalyst Used in Hydrodechlorin of Hazardous Chlorinated Aromatic Compounds
Konferenční objektpeer-reviewedpublishedDatum publikování
2017
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Ústav geotechniky SAV
Abstrakt
In the present study, a simple hydrometallurgical process for the recovery of spent Raney nickel catalyst was described. Deactivated Raney nickel catalyst is produced by treatment of waste water contaminated with chlorinated aromatic contaminants using Raney Al-Ni alloy in alkaline conditions. In this hydrometallurgical process, deactivated nickel slurry is dissolved in excess of aqueous sulfuric acid by co-action of peroxosulfate, unreacted H2SO4 is separated from aqueous aluminium and nickel sulphate solution by dialysis and Ni(OH)2 was precipitated under strongly alkaline conditions with aim to separate aluminium in the form of water soluble KAl(OH)4. Isolated Ni(OH)2 is converted by neutralization to the nickel sulphate which is directly applicable as the source of in-situ produced nickel slurry as effective dechlorination catalyst in co-action of NaBH4.
Rozsah stran
p. 9-12
ISSN
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Projekt
Zdrojový dokument
Proceedings of 20th International Conference on Waste Recycling
Vydavatelská verze
Přístup k e-verzi
pouze v rámci univerzity
Název akce
Waste Recycling XX (06.12.2017 - 08.12.2017, Košice)
ISBN
978-80-89883-04-2
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Klíčová slova
Raney nickel, hydrometallurgy, dialysis, borohydride, reduction, Raneyův nikl, hydrometalurgie, dialýza, tetrahydridoboritan, redukce