Recovery of Gallium from Bayer Liquor Using Chelating Resins in Fixed-Bed Columns

Abstract

In recent times, resins with chelating ligands (hydroxamic acids, in particular) have received considerable attention owing to their selective adsorption of gallium from sodium aluminate liquor, commonly known as Bayer liquor. This paper deals with the synthesis of a chelating ion-exchange resin as well as the studies carried out on the resin to ascertain its loading capacity for gallium, kinetics, stability toward acid and alkali besides its recyclability. The paper also gives a description of the ion-exchange cycle besides the design of a laboratory-scale column which shall yield data applicable to the designing of commercial units.

Recovery of Ga(III) by Raw and Alkali Treated Citrus limetta Peels

“…These results are presented in Table 8 . It may be seen that RCP and ACP are competitive to synthetic ion exchange resin showing adsorption capacities of 7.32 and 7.61 mg/g, respectively, which are higher than that of reported value (6.0 mg/g) on resin with hydroxamic acid ligand [ 3 ].…”

“…It finds significant applications in the semiconductor industry through use of gallium arsenide and gallium nitride. Gallium is classified as a “strategic” metal, since it is used in high-tech gadgets like microwave transceivers, DVDs, laser diodes in CDs, and so forth and defence-related activities [ 1 – 3 ]. Gallium nitrate and gallium citrate are used in medical imaging as radio contrast agents [ 4 ].…”

Lithium adsorption performance of a three-dimensional porous H2TiO3-type lithium ion-sieve in strong alkaline Bayer liquor

“…to remove Si, Ga, and V from the Bayer liquor. [7][8][9][10][11][12][13] Recently, it has been reported that a kind of lithium-containing bauxite used for alumina production suffers from lithium enrichment (50-100 mg L À1 ) in the Bayer liquor, which has seldom been encountered in previous studies. 14,15 Due to high dissolubility of most lithium salts, it is hard to remove lithium impurities by precipitation/co-precipitation methods from the Bayer liquor.…”

Mine Water as a Resource: Selective Removal and Recovery of Trace Antimony from Mine-Impacted Water

“…Numerous studies document the successful recovery of metals from ion-exchange resins and subsequent resin regeneration and reuse (e.g. McKevitt and Dreisinger 2009;Nikoloski and Ang 2014;Petruzzelli et al 1995;Riveros et al 2008;Sarkar et al 2007;Selvi et al 2004). In addition to Sb removal from aqueous solution to extremely low residual concentration, an advantage of ion exchange resin use for mine water purification is the relative ease of recovery of adsorbed ions.…”