Recovery of palladium from a spent automobile catalyst leaching solution by a thiodiglycolamide derivative


Autoria(s): Paiva, A. P.; Carvalho, G. I.; Costa, M. Clara; Costa, A. M. R.; Nogueira, C. A.
Data(s)

31/05/2016

31/05/2016

2015

Resumo

In the sequence of previous research on the development of novel liquid-liquid amidetype compounds to efficiently and selectively extract platinum-group metals (PGMs) from concentrated hydrochloric acid media, a specific thiodiglycolamide derivative – N,N’-dimethyl-N,N’-dicyclohexylthiodiglycolamide (DMDCHTDGA) – has been applied for the recovery of palladium(II) from a spent automobile catalyst leaching solution, containing palladium(II) and rhodium(III) as PGMs. The results obtained are rather promising, since the DMDCHTDGA behavior towards the two PGMs is similar to that observed for hydrochloric acid aqueous media studied before, simulating the real leaching phases. Within eleven metal elements co-existing in solution, the majority in high fold-excesses, only aluminum(III) and cerium(III) interfere in the palladium(II) liquid-liquid extraction process, requiring further optimization.

Identificador

Paiva, A.P.; Carvalho, G.I.; Costa, M.C.; Costa, A.M.R.; Nogueira, C.A. - Recovery of palladium from a spent automobile catalyst leaching solution by a thiodiglycolamide derivative. In: WASTES’2015 – 3rd International Conference on Wastes: solutions, treatments and opportunities, Book of Proceedings, Viana do Castelo, Portugal,14-16 September, 2015, p. 61-63

http://hdl.handle.net/10400.9/2988

Idioma(s)

eng

Relação

info:eu-repo/grantAgreement/FCT/3599-PPCDT/109970/PT

Direitos

openAccess

Palavras-Chave #Palladium #Liquid-liquid extraction  #Thiodiglycolamide derivative #Platinum-group metals #Recycling
Tipo

conferenceObject