Recovery and separation of gallium(III) and germanium(IV,
01/08/2017· The effective recovery of Ga(III) and Ge(IV) from iron-removed oxalic acid leach solution was achieved using an organic system consisting of N235 and TBP. The results of this study show that the increase in N235 concentration was found to be favorable to the extraction of Ga(III) and Ge(IV). TBP showed significant impact on the phase separation. The optimum organic system was found to beRecovery and separation of gallium(III) and germanium(IV,,01/05/2017· The removal of iron in the H 2 C 2 O 4 leach solution was carried out using an ultrasound-assisted ferrous iron precipitation method in which > 96% of Fe(III) was removed in the form of FeC 2 O 4 ·2H 2 O with minor losses of Ga(III) and Ge(IV) (1.4% and 1.3%). The results indicated that high recoveries of gallium and germanium from the zinc refinery residues could be achieved with twoRecovery of Gallium(III) from Strongly Alkaline Media,,01/10/1997· Kelex-100 [7-(4-ethyl-1-methyloctyl)-8-hydroxyquinoline] is an important liquid-chelating ion exchanger in hydrometallurgy and a highly selective extractant for gallium (Ga). In this study, Kelex-100-loaded ion-exchange resins were prepared for the recovery of Ga(III) from sodium aluminate solutions (Bayer solution) used in the Bayer process. When macroporous type ion-exchange resins were usedRecovery of Ga(III) by Raw and Alkali Treated Citrus,,There are four kinds of recovery methods for gallium, namely, fractional precipitation, electrochemical deposition, solvent extraction, and ion exchange. Fractional precipitation is a complex process; solvent extraction is efficient but very slow; electrochemical method uses mercury cathode which is banned due to mercury toxicity, whereas ion exchange gives effective recovery of gallium. Industrial resins suchSeparation and recovery of gallium(III) ions from aqueous,,of Cyphos IL 101 as an extractant for various metal ions, the extraction of gallium(III) using Cyphos IL 101 is yet to be explored. In the present study, Cyphos IL 101 was assessed for the extraction, separation, and recovery of Ga(III) from chloride medium. The ff of various parameters such as equilibration time, temperature, andLiquid–liquid extraction and recovery of gallium(III) from,,Gallium(III) solution. A standard stock solution of gallium(III) was prepared by dis-solving 0.898 g of gallium trichloride in 6.0 mol dm-3 hydrochloric acid and diluted to 250 mL with distilled water and standardized complexometrically.32 The solution contains 1.42 mg mL-1, of gallium(III). The working solution was prepared by appropriate dilution of the stock
Liquid–liquid extraction and recovery of gallium(III) from,
gallium(III) in the higher pH range.15 They extract gallium(III) in 30 min at pH 9.2 and the reactions were exothermic. The extraction kinetics of gallium(III) with 5-chloro-8-quinolinol diluted in toluene was examined and clarified by Kondo and et al.16,17 The extraction of gallium(III) was found to be 80 % after 3 h equilibration. The fundamental extraction kinetics with theA stepwise separation process for selective recovery of,,15/06/2021· The interest in gallium (Ga) recovery from coal fly ash has been driven by its rapidly growing demand for manufacturing and its extraction can facilitate the effective use of coal fly ash, which is conducive to reducing the soil degradation and environment danger. In this study, polyurethane foam (PUF) as an adsorbent for Ga(III) recovery was found to exhibit a good structural stability and a highExtraction of gallium(III) from hydrochloric acid,,The extracted gallium (III) was quantitatively stripped with aqueous nitric acid solutions. The separation and recovery of gallium (III) from hydrochloric acid solutions containing excess indium (III) was demonstrated using the mixed ionic liquid.Solvent Extraction of Gallium (III) from Basic Sodium,,15/02/2007· Abstract Alkanoyl oxines have been used for the extraction of gallium from basic solution, especially for the selective recovery of gallium in the presence of excess aluminum from Bayer process sodium aluminate liquor. 5-Alkanoyl-8-hydroxyquinolines (R.CO.Ox), where R is the alkyl group C13H27 (myristoyl), C15H31 (palmitoyl), and C17H35 (stearoyl) were synthesized by the Fries rearrangementRecovery of Gallium(III) from Strongly Alkaline Media,,01/10/1997· Recovery of Gallium(III) from Strongly Alkaline Media Using a Kelex-100-Loaded Ion-Exchange Resin. Morio Nakayama; and ; Hiroaki Egawa; View Author Information. Faculty of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Kumamoto 862, Japan, and Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860, Japan . Cite this: Ind. Eng.Extractive recovery of gallium(III) from acid sulfate,,11/02/2009· Liquid extraction of Ga(III) ions with technical-grade aliphatic amines from sulfate media at a temperature of 20 ± 5°C was studied. The composition of the complex being extracted was determined and the equation of the reaction of Ga(III) extraction with primary amines was derived. The equilibrium constant of the reaction of gallium(III) extraction from acid sulfate solutions was found.
A stepwise separation process for selective recovery of,
15/06/2021· The interest in gallium (Ga) recovery from coal fly ash has been driven by its rapidly growing demand for manufacturing and its extraction can facilitate the effective use of coal fly ash, which is conducive to reducing the soil degradation and environment danger. In this study, polyurethane foam (PUF) as an adsorbent for Ga(III) recovery was found to exhibit a good structural stability and a,Recovery of Ga(III) by Raw and Alkali Treated Citrus,,Alkali treated Citrus limetta peels were used for recovery of Ga(III) from its aqueous solution. The raw and alkali treated peels were characterized for functional groups. The efficiency of adsorption increased from 47.62 mg/g for raw peels to 83.33 mg/g for alkali treated peels. Between pH 1 and 3, the adsorption increased and thereafter decreased drastically.Recovery of Gallium from Bayer Liquor Using Chelating,,27/03/2004· Adsorption Performances and Mechanisms of Amidoxime Resin toward Gallium(III) and Vanadium(V) from Bayer Liquor., Recovery of Ga(III) by Raw and Alkali Treated Citrus limetta Peels. International Scholarly Research Notices 2014, 2014, 1-10. DOI: 10.1155/2014/968402. Michèle Besson, Pierre Gallezot. Stability of ruthenium catalysts supported on TiO2 or ZrO2 in catalytic wet airSolvent Extraction of Gallium (III) from Basic Sodium,,Abstract Alkanoyl oxines have been used for the extraction of gallium from basic solution, especially for the selective recovery of gallium in the presence of excess aluminum from Bayer process sodium aluminate liquor. 5-Alkanoyl-8-hydroxyquinolines (R.CO.Ox), where R is the alkyl group C13H27 (myristoyl), C15H31 (palmitoyl), and C17H35 (stearoyl) were synthesized by the Fries rearrangement,Adsorption Performances and Mechanisms of,Recovery of Ga(III) from chloride solutions by solvent extraction with Cextrant 230. Hydrometallurgy 2019, 185, 76-81. DOI: 10.1016/j.hydromet.2019.02.001. Tuantuan Yang, Lixue Wang, Mei Liang, Yang Chen, Huawei Zou. Cross-linked polyvinyl amidoxime fiber: a highly selective and recyclable adsorbent of gallium from Bayer liquor.US20040042945A1 - Process for recovery of gallium,The present invention relates to a process for the recovery of gallium from Bayer process liquors. Bayer process liquor is obtained from alumina industries and contains 450 g/L Na 2 O, 80 g/L Al 2 O 3 and 190±20 ppm of gallium. The present invention utilizes an organic and inorganic phase for a two stage separation process to recover gallium with high purity.
Sustainability | Free Full-Text | Recovery of Gallium from,
Moreover, Cyanex 272 has not been tested for the recovery of gallium from waste gallium arsenide etching solution, and the method of gallium recovery with Cyanex 272 could be suitable for arsenic precipitation. Considering the arsenic in the etching solution, R. J. Bowell mentioned that the arsenic could be precipitated when iron sulfate heptahydrates are added to the solution at a low pH,AU2002247948B2 - Process for recovery of gallium,gallium organic vol liquor organic phase Prior art date 2002-03-28 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Ceased Application number AU2002247948A Other versions AU2002247948A1 (en Inventor Archana Agrawal Indranil Chattoraj Puvvada GeorgeRecovery of Gallium(III) from Strongly Alkaline Media,,01/10/1997· Recovery of Gallium(III) from Strongly Alkaline Media Using a Kelex-100-Loaded Ion-Exchange Resin. Morio Nakayama; and ; Hiroaki Egawa; View Author Information. Faculty of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Kumamoto 862, Japan, and Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860, Japan . Cite this: Ind. Eng.(PDF) Separation and recovery of gallium(III) ions from,,Separation and recovery of gallium(III) ions from aqueous phase by liquid--liquid extraction using a novel extractant, Cyphos IL 101. Turkish Journal of Chemistry . 2017 - Cilt: 41 - Sayı: 6 . 892 - 903The Recovery of Gallium(III) from Acid Leach Liquors of,,The extraction of gallium(III) from acid leach liquors of zinc ores using two types of ion exchange resins, namely Duolite ES 467 and an experimental resin denoted HDP is reported. Duolite ES 467, a commercially available chelating resin containing aminophosphonic acid groups can selectively extract gallium(III) from zinc liquors at high acidity. This extraction however is extremely slow, even,Recovery of Gallium from Bayer Liquor Using Chelating,,27/03/2004· Adsorption Performances and Mechanisms of Amidoxime Resin toward Gallium(III) and Vanadium(V) from Bayer Liquor., Recovery of Ga(III) by Raw and Alkali Treated Citrus limetta Peels. International Scholarly Research Notices 2014, 2014, 1-10. DOI: 10.1155/2014/968402. Michèle Besson, Pierre Gallezot. Stability of ruthenium catalysts supported on TiO2 or ZrO2 in catalytic wet air
US20040042945A1 - Process for recovery of gallium
The present invention relates to a process for the recovery of gallium from Bayer process liquors. Bayer process liquor is obtained from alumina industries and contains 450 g/L Na 2 O, 80 g/L Al 2 O 3 and 190±20 ppm of gallium. The present invention utilizes an organic and inorganic phase for a two stage separation process to recover gallium with high purity.Adsorption Performances and Mechanisms of,Recovery of Ga(III) from chloride solutions by solvent extraction with Cextrant 230. Hydrometallurgy 2019, 185, 76-81. DOI: 10.1016/j.hydromet.2019.02.001. Tuantuan Yang, Lixue Wang, Mei Liang, Yang Chen, Huawei Zou. Cross-linked polyvinyl amidoxime fiber: a highly selective and recyclable adsorbent of gallium from Bayer liquor.Sustainability | Free Full-Text | Recovery of Gallium from,,Moreover, Cyanex 272 has not been tested for the recovery of gallium from waste gallium arsenide etching solution, and the method of gallium recovery with Cyanex 272 could be suitable for arsenic precipitation. Considering the arsenic in the etching solution, R. J. Bowell mentioned that the arsenic could be precipitated when iron sulfate heptahydrates are added to the solution at a low pH,Electrolytic recovery of gallium from alkali aluminate,,31/08/2017· A method for the electrochemical recovery of gallium from alkali aluminate Bayer process solutions has been considered. The comparative characteristics of electrolyzers haveSeparation of gallium and copper from hydrochloric acid,Solvent extraction offers a better option for gallium recovery among many techniques. The liquid–liquid extraction of gallium(III)–copper(II) solution from hydrochloric acid medium using di-2-ethyl-hexylphosphoric acid (D 2 EHPA) in kerosene was studied. The effect of the reagent concentration and other parameters on the extraction of gallium(III)–copper(II) was also studied.AU2002247948B2 - Process for recovery of gallium,gallium organic vol liquor organic phase Prior art date 2002-03-28 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Ceased Application number AU2002247948A Other versions AU2002247948A1 (en Inventor Archana Agrawal Indranil Chattoraj Puvvada George
