Solvent extraction of copper(II), nickel(II), cobalt(II), zinc(II), and iron(Ill) by high molecular weight hydroxyoximes

Calligaro, L.; Mantovani, Ana Carolina Gomes; Belluco, U.; Acampora, M.

doi:10.1016/s0277-5387(00)84355-7

Cited by 15 publications

(8 citation statements)

References 14 publications

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“…Several commercial reagents some of which are phenolic oximes derived from salicylaldehyde or ketophenols have been used for copper recovery from sulfate, chloride, nitrate or ammonia media [1,2,4,8,9,37].…”

Section: Extraction Ability Of the Ligandsmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, characterization and extraction studies of some metal (II) complexes containing (hydrazoneoxime and bis-acylhydrazone) moieties

Al-Ne’aimi

Al-Khuder

2013

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Section: Extraction Ability Of the Ligandsmentioning

confidence: 99%

“…Oximes and hydrazones are the two important classes of compounds owing to their wide applications in industry, medicine, detection and determination of various metal ions [1][2][3][4][5][6][7][8][9]. These compounds have a number of potential bonding sites such as carbonyl oxygen, azomethine and imine nitrogens.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and extraction studies of some metal (II) complexes containing (hydrazoneoxime and bis-acylhydrazone) moieties

Al-Ne’aimi

Al-Khuder

2013

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…O resíduo insolúvel contém manganês, fósforo e traços de cobalto. Outra possibilidade é a dissolução desse precipitado impuro em meio de ácido sulfúrico para extração do níquel, de acordo com sugestões já propostas na literatura [29,30]. Na continuidade desta pesquisa, estão sendo buscadas metodologias para o isolamento do níquel a partir de seu precipitado impuro.…”

Section: Isolamento Do Níquelunclassified

Recuperação de cobalto de baterias de níquel metal-hidreto (Ni-MH) via extração seletiva com cyanex 272

et al. 2007

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A extração de metais com solventes orgânicos é uma poderosa ferramenta para ajudar a separação de complexas misturas de metais presentes em baterias usadas e dispositivos eletroeletrônicos, evitando assim o uso de produtos tóxicos ou de rotas experimentais geradoras de uma grande quantidade de resíduos finais. Este trabalho descreve um processo de recuperação de cobalto presente em baterias níquel metalhidreto (Ni-MH) usadas por meio de uma nova rota hidrometalúrgica. O elemento foi extraído de uma solução em meio clorídrico com Cyanex 272 (ácido 2,4,4-trimetil-pentil fosfínico) dissolvido em querosene. Os melhores resultados foram obtidos quando o pH estava ligeiramente alcalino (7,2) e a concentração de Cyanex em querosene era 5% vol. A recuperação do cobalto atingiu 99% m/m. Foi também possível recuperar um precipitado contendo lantanídios (La, Ce, Pr) e ítrio, que foi purificado pela dissolução em ácido clorídrico seguido de adição de oxalato de amônio. O níquel também foi isolado como um precipitado impuro após a recuperação do cobalto e dos lantanídios. Os residuos finais gerados ao longo do processo são principalmente soluções de cloreto de sódio, sem coloração, turbidez ou metais pesados em quantidades significativas.Palavras chaves: Cobalto, cyanex 272, baterias Ni-MH. ABSTRACTMetals extraction with organic solvents is a powerful tool to aid separation of complex mixtures of elements present in spent batteries and electronic devices, thus avoiding the use of toxic chemicals or experimental routes which generate high amounts of final wastes. This work describes a recovery process for cobalt present in spent Ni-MH batteries by a new hydrometallurgical route. The element was extracted in a chloride-bearing medium with Cyanex 272 (2,4,4-trimethyl-pentyl fosfinic acid) dissolved in kerosene. The best results were obtained when pH was slightly alkaline (7,2) and Cyanex concentration in kerosene was 5% vol. Cobalt recovery reached 99 wt%. It was also possible to recover a crude precipitate containing lanthanides (La, Ce, Pr) and yttrium, which was purified by dissolving it in HCl followed by addition of ammonium oxalate. Nickel was also isolated as an impure precipitate after cobalt and lanthanides recoveries. Final wastes generated along the separation processes are mainly sodium chloride solutions with no color, turbidity or heavy metals present in significant amounts.

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“…In this study, the extraction data of ligands showed a pronounced increasing for the extraction ability of Cu 2+ . The reason of this high affinity of transition metals is due to existing the soft donar nitrogen groups in ligands causes the increasing in the extraction ability of these ligands [25][26][27][28][29][30][31][32].…”

Section: Solvent Extractionmentioning

confidence: 99%

“…Although numerous investigations have been recently reported regarding the extraction of alkali metals and transition metals from aqueous phase into an organic phase by crown ether and calixarene [19][20][21][22][23][24], as yet, reports on solvent extraction with the complexes of oxime compounds are scarce [25][26][27][28][29][30][31][32]. Therefore, we have investigated the solvent extraction of metal cations through oxime compounds.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and liquid–liquid extraction properties of new methoxyaminobiphenylglyoxime derivatives and their complexes with some transition metals

Karapinar

Kabay

2007

Transition Met Chem

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In this study, three new aminobiphenylglyoximes, [L 1 H 2 ] N-(2-methoxy)aminobiphenylglyoxime, [L 2 H 2 ] N-(3-methoxy)aminobiphenylglyoxime and L[ 3 H 2 ] N-(4-methoxy)aminobiphenylglyoxime have been synthesized by the reaction of (E,E)-4¢-biphenylchloroglyoxime with 2-Methoxyaniline, 3-Methoxyaniline and 4-Methoxyaniline in absolute ethanol. The preparation Ni II , Co II and Cu II complexes of these ligands are described. The ligands and their complexes were characterized by elemental analyses, IR, mass, H 1 and 13 C NMR spectra, thermogravimetric analyses (t.g.a) and magnetic susceptibility measurements. Ligands complexing properties were studied by the liquid-liquid extraction of selected alkali (Li + , Na + , K + , Cs + ) and transition metals (Co 2+ , Ni 2+ , Cu 2+ , Zn 2+ , Cd 2+ , Pb 2+ ). It has been observed that all ligands show a high affinity to Cu 2+ ions, whereas almost no affinity to alkali metals. The extraction equilibrium constants (K ex ) for complexes of ligands with Cu 2+ metal picrates between dichloromethane and water have been determined at 25°C.

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Solvent extraction of copper(II), nickel(II), cobalt(II), zinc(II), and iron(Ill) by high molecular weight hydroxyoximes

Cited by 15 publications

References 14 publications

Synthesis, characterization and extraction studies of some metal (II) complexes containing (hydrazoneoxime and bis-acylhydrazone) moieties

Synthesis, characterization and extraction studies of some metal (II) complexes containing (hydrazoneoxime and bis-acylhydrazone) moieties

Recuperação de cobalto de baterias de níquel metal-hidreto (Ni-MH) via extração seletiva com cyanex 272

Synthesis, characterization and liquid–liquid extraction properties of new methoxyaminobiphenylglyoxime derivatives and their complexes with some transition metals

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