Recuperação de cádmio de baterias níquel-cádmio via extração seletiva com tributilfosfato (TBP)

Química Nova

Ana Paula Mauro Gonçalves Barandas²  Ivam Macedo Valverde Jr²  Júlio Carlos Afonso²  José Luiz Mantovano¹  José Waldemar Silva Dias Da Cunha¹ 

[1] ,Universidade Federal do Rio de Janeiro Instituto de Química Departamento de Química AnalíticaRio de Janeiro RJ ,Brasil

关键词: cadmium;    TBP;    Ni-Cd batteries;   

DOI  :  10.1590/S0100-40422007000300035

来源: SciELO

【 摘 要 】

This work describes a recovery process of cadmium from spent nickel-cadmium batteries by a new hydrometallurgical route based on the selective extraction in hydrochloric acid medium with tributylphosphate (TBP), alone or dissolved in kerosene. The best results were obtained when TBP concentration was at least 75 vol%. Nickel extraction was negligible under these conditions. It was isolated after processing the rafinate through an anionic ion-exchange column. Final wastes generated are basically sodium chloride solutions, with no turbidity, color or heavy metals present in significant amounts.

【 授权许可】

CC BY-NC   
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