Solvent extraction applied to the recovery of heavy metals from galvanic sludge.

@article{Silva2005SolventEA,
  title={Solvent extraction applied to the recovery of heavy metals from galvanic sludge.},
  author={Jo{\~a}o Batista de Almeida e Silva and Alexandre Paiva and Delfim Soares and A Labrincha and Francesc Castro},
  journal={Journal of hazardous materials},
  year={2005},
  volume={120 1-3},
  pages={113-8}
}
In this study, a hydrometallurgical treatment involving the solvent extraction and recovery of some heavy metals from a sulphuric acid leach solution of galvanic sludge, using di-(2-ethylhexyl)-phosphoric acid (D2EHPA) and bis-(2,4,4-trimethylpentyl)-phosphinic acid (Cyanex 272), both diluted in kerosene, has been investigated. The preliminary tests revealed the necessity to remove other metal species than zinc and nickel, contained in the leach solution, and therefore, processes to cement… CONTINUE READING