Feasibility of Recovering High Valency Metal Cyanide Complexes with a Fluidized Bed of Resin

Nesbitt, A.B.; Petersen, F.W.

doi:10.1080/01496399508013123

Cited by 9 publications

(2 citation statements)

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“…For, example Amberlite IRA 958 found application in sugar refining plants for sorption of large organic molecules. It also sorbes significant amounts of [Cu(CN) 3 ] 2− and [Cu(CN) 4 ] 3− compared to [Ni(CN) 4 ] 2− . − In the paper by Riveros, it was found that Amberlite IRA 458 has a weak affinity for [Au(CN) 2 ] − but strong affinity for [Fe(CN) 6 ] 4− and [Zn(CN) 4 ] 2− . The order of affinities for metallocyanide Zn(II) > Fe(II) > Cu(II) > Ni(II) > Au(I) is due to its high hydrophilic nature along with its high ionic density.…”

Section: Introductionmentioning

confidence: 99%

Cu(II), Zn(II), Ni(II), and Cd(II) Complexes with HEDP Removal from Industrial Effluents on Different Ion Exchangers

Kołodyńska

2010

Ind. Eng. Chem. Res.

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The aim of this research is to investigate sorption characteristic of polyacrylate anion exchangers and chelating ion exchangers for the removal of Cu(II), Zn(II), Ni(II), and Cd(II) complexes with HEDP (1-hydroxyethylene-1,1-diphosphonic acid) from aqueous solutions. Optimum sorption conditions were determined as a function of phase contact time (1−180 min), pH (5−13), ion exchanger dosage (0.1−1.0 g), temperature (293−333 K), and chloride ions concentration (0.01−0.5 mol/L of NaCl). The Langmuir, Freundlich, Temkin, and Dubinin−Radushkevich (D−R) models were applied to describe the adsorption isotherm of Cu(II), Zn(II), Ni(II), and Cd(II) complexes with HEDP on Amberlite IRA 458 and Amberlite IRA 958 as well as Purolite S-920 and Purolite S-930. In the case of M(II)−HEDP complexes the adsorption capacities of Amberlite 458 were found to be 1.96 meq/g for Cu(II), 3.94 meq/g for Zn(II), 2.98 meq/g for Ni(II), and 4.25 meq/g for Cd(II). The metal ions were desorbed using 1 M HCl. The ion exchange capacity of ion exchangers applied decreased 8% in the recovery of Cu(II)−HEDP after 10 times of the sorption−desorption processess. Experimental data were also tested in terms of sorption kinetics using the pseudo-first-order and pseudo-second-order kinetic models. The results showed that the sorption processes of Cu(II), Zn(II), Ni(II), and Cd(II) complexes with HEDP on Amberlite IRA 458 and Amberlite IRA 958 as well as Purolite S-920 and Purolite S-930 followed well the pseudo-second-order kinetics.

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Section: Introductionmentioning

confidence: 99%

Cu(II), Zn(II), Ni(II), and Cd(II) Complexes with HEDP Removal from Industrial Effluents on Different Ion Exchangers

Kołodyńska

2010

Ind. Eng. Chem. Res.

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“…10 Acrylate anion-exchangers are applied in industrial methods to remove Fe cyanide from mill wastewater and to recover polyvalent metal (Ni, Fe, Cu, Co) cyanide complexes in a fluidized-bed as well as to separate rare earth element complexes with IMDA. [11][12][13][14] The aim of the paper was to study the applicability of strongly and weakly basic anion-exchangers with a polyacrylic skeleton for the separation of selected pairs of rare earth complexes with DCTA (Ln(dcta) -). The complexed solutions of rare earth elements were prepared by dissolving the oxides with 1 % excess of the stoichiometric quantity of DCTA solution (Ln(III):DCTA = 1:1) under heating.…”

Section: Introductionmentioning

confidence: 99%

Separation of Y(dcta)- complexes from Nd(dcta)- and Sm(dcta)- complexes on polyacrylate anion-exchangers (Short communication)

Hubicka

Kołodyńska

2003

JSCS

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The formation of anion rare earth element complexes with aminopolycarboxylic acids gives new possibilities for the separation of these elements on anion exchangers. The higher affinity of the Nd(dcta)- and Sm(dcta)- complexes for the anion- exchangers compared to Y(dcta)- complexes indicates the possibility of yttrium purification as a macrocomponent from the former by frontal analysis. The weakly basic polyacrylate gel anion-exchanger Amberlite IRA 68 was more effective in the purification of Y(III) from Nd(III) and Sm(III) complexes with DCTA than the strongly basic anion-exchangers of this type.

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Cyanide recycling using strong-base ion-exchange resins

Leão¹,

Ciminelli

Costa³

1998

JOM

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Recoflo ion-exchange technology offers improvements over conventional ion-exchange equipment through the use of fine mesh resins; short-depth, fully packed ionexchange columns; and counter-current regeneration. The system is particularly suited for hydrometallurgical applications due to its ability to process more concentrated feed solutions, the recovery of concentrated-metal product streams, and the much smaller required volume of ion-exchange resin.

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Feasibility of Recovering High Valency Metal Cyanide Complexes with a Fluidized Bed of Resin

Cited by 9 publications

References 0 publications

Cu(II), Zn(II), Ni(II), and Cd(II) Complexes with HEDP Removal from Industrial Effluents on Different Ion Exchangers

Cu(II), Zn(II), Ni(II), and Cd(II) Complexes with HEDP Removal from Industrial Effluents on Different Ion Exchangers

Separation of Y(dcta)- complexes from Nd(dcta)- and Sm(dcta)- complexes on polyacrylate anion-exchangers (Short communication)

Cyanide recycling using strong-base ion-exchange resins

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