Extraction of Au(III) using aromatic ethers via ion solvation from acidic chloride media: Structural factors that influence extraction
نویسندگان
چکیده
Ethereal compounds, such as the commercially available extractant dibutyl carbitol (DBC), can extract Au(III) from acidic chloride media by ion solvation. Herein, various aromatic ether compounds comprising an ring and aliphatic chains were prepared to compare extraction affinity toward without dilution. Aromatic monoethers are not useful for of Au(III). Conversely, using 1,2-diethers increases a function hydrochloric acid concentration. For 1,2-diethers, shorter chain, higher 1,2-Dimethoxybenzene (o-DMB), which has shortest side chains, exhibits highest affinity. 1,3-Dimethoxybenzene (m-DMB), is regioisomer o-DMB, was suitable The selectivity over that Fe(III) Ga(III) under high concentrations acid, than DBC. Selected including show significantly capacity industrial requirement 30 g/dm3. extracted o-DMB quantitatively recovered reduction with oxalic acid. In separation test mixed system seven metals, selectively recovery percentage, after reduction, reaching 95.7%.
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ژورنال
عنوان ژورنال: Separation and Purification Technology
سال: 2021
ISSN: ['1873-3794', '1383-5866']
DOI: https://doi.org/10.1016/j.seppur.2020.118008