Recovery of cadmium from nickel-cadmium batteries via selective extraction with tributylphosphate (TBP)

Quimica nova

Cunha, José Waldemar Silva Dias da¹  Mantovano, José Luiz¹  Valverde Jr, Ivam Macedo²  Afonso, Júlio Carlos²  Barandas, Ana Paula Mauro Gonçalves² 

[1] Instituto de Engenharia Nuclear, Rio de Janeiro, Brasil;Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil

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

DOI  :  10.1590/S0100-40422007000300035

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work describesa recovery process of cadmium from spent nickel-cadmium batteries by a new hydrometallurgicalroute based on the selective extraction in hydrochloric acid medium with tributylphosphate(TBP), alone or dissolved in kerosene. The best results were obtained when TBPconcentration was at least 75 vol%. Nickel extraction was negligible under theseconditions. It was isolated after processing the rafinate through an anionicion-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