TY - JOUR ID - 7613 TI - Liquid-Liquid Extraction of Gallium from Jajarm Bayer Process Liquor Using Kelex 100 JO - Iranian Journal of Chemistry and Chemical Engineering JA - IJCCE LA - en SN - 1021-9986 AU - Abdollahy, Mahmood AU - Naderi, Hojat AD - Department of Mining Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, I.R. IRAN Y1 - 2007 PY - 2007 VL - 26 IS - 4 SP - 109 EP - 113 KW - Gallium extraction KW - Bayer process liquor KW - Kelex 100 DO - 10.30492/ijcce.2007.7613 N2 - The solvent extraction of gallium from a concentrated Jajarm Bayer process liquor containing 164.90 g/l of Na2O, 86.70 g/l of Al2O3 and 106.02 ppm of gallium was investigated using 10 vol.% Kelex100, a 7-alkyl substituted-8 hydroxyquinoline as an extractant, 10 vol.% etanol as a modifier and kerosene as a diluent. At (Vo :Va = 1.0:1.0) organic to aqueous phase ratio and at room temperature, 93.39% of gallium was recovered in 60 minutes. Back extraction studies of the loaded organic phase were carried out using hydrochloric acid, sulfuric acid and sodium hydroxide. Scrubbing of aluminium co-extracted into the organic phase was carried out with 5.0 M HCl and subsequently stripping of gallium was carried out with 1.5 M HCl. The final strip liquor was found to contain 490 ppm of gallium along with 141.73 ppm of aluminium.   UR - https://ijcce.ac.ir/article_7613.html L1 - https://ijcce.ac.ir/article_7613_018e070afe25cb5e4bf678b67de5504b.pdf ER -