Solvent extraction of Cr(III) from alkaline media with quaternary ammonium compounds. Part II

Autor:	Barbara Wionczyk, Wiesław Apostoluk
Rok vydání:	2004
Předmět:	Aqueous solution Hydrometallurgy Extraction (chemistry) Inorganic chemistry Metals and Alloys Aqueous two-phase system chemistry.chemical_element Sulfuric acid Industrial and Manufacturing Engineering chemistry.chemical_compound Chromium chemistry Bromide Materials Chemistry Hydroxide
Zdroj:	Hydrometallurgy. 72:195-203
ISSN:	0304-386X
DOI:	10.1016/s0304-386x(03)00139-7
Popis:	For the first time, it has been experimentally demonstrated that hydrophobic quaternary ammonium compounds dissolved in hydrocarbons are able to effectively extract chromium(III) from alkaline aqueous solutions. Experimental investigation has been performed on extraction of chromium(III) with benzyldodecyldimethylammonium bromide (BDDMA-Br), trioctylmethylammonium chloride (TOMA-Cl) and trioctylmethylammonium hydroxide (TOMA-OH). The yield of chromium(III) extraction was studied at various contact times of the aqueous and organic phases, the composition of the phases, and ageing time of the initial aqueous phase. Under optimal conditions, the extraction of chromium(III) goes quickly with Cr(III) removal exceeding 99%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1ea1867be14742cc30c14038f8d39dce https://doi.org/10.1016/s0304-386x(03)00139-7 Zobrazit plný text záznamu Full Text from ScienceDirect