Electrodeposition of Cobalt and Lead in the Hybrid Liquid Membrane – Electrodialysis – Electrolysis Process
Key Engineering Materials. Vol.721: Engineering Materials and Tribology XXV: Selected, peer reviewed papers from the 25th International Baltic Conference of Engineering Materials and Tribology - BALTMATTRIB 2017
Tatiana Sadyrbaeva

A novel method for Co(II) and Pb(II) recovery from acidic solutions is presented. The extraction of Co(II) and Pb(II) ions using the bulk liquid membranes during a galvanostatic electrodialysis process accompanied by cathodic electrodeposition of the metals was studied. Solutions of di(2-ethylhexyl)phosphoric acid (D2EHPA) with admixtures of tri-n-octylamine (TOA) in 1,2-dichloroethane were used as the liquid membranes. Effects of current density, Co(II) and Pb(II) concentrations, sulfuric or nitric acid concentration in the feed solution have been studied. The effects of D2EHPA and TOA concentration in the liquid membrane, of the type and concentration of acid in the catholyte have also been studied. The optimal conditions were determined. It was demonstrated that a practically complete (98-99%) removal of Co(II) and Pb(II) from the feed solutions containing 0.01 mol∙L-1 CoSO4 or 0.01 mol∙L-1 Pb(NO3)2 is achieved during 1.0 − 4.0 h of electrodialysis. A possibility of effective transfer of Pb(II) into dilute solutions of perchloric and nitric acids was demonstrated. The liquid membranes ensure the recovery of Co(II) ions into dilute solutions of perchloric, sulphuric, hydrochloric and nitric acids. Adherent, compact cobalt and lead electrodeposits with a fine-grained structure were obtained in the studied systems.


Atslēgas vārdi
Liquid membrane, Cobalt, Lead, Di(2-ethylhexyl)phosphoric acid, Electrodialysis, Electrodepositon
DOI
10.4028/www.scientific.net/KEM.721.399
Hipersaite
https://www.scientific.net/KEM.721.399

Sadyrbaeva, T. Electrodeposition of Cobalt and Lead in the Hybrid Liquid Membrane – Electrodialysis – Electrolysis Process. No: Key Engineering Materials. Vol.721: Engineering Materials and Tribology XXV: Selected, peer reviewed papers from the 25th International Baltic Conference of Engineering Materials and Tribology - BALTMATTRIB, Latvija, Riga, 3.-4. novembris, 2016. Pfaffikon: Trans Tech Publications, 2017, 399.-403.lpp. ISBN 978-3-0357-1072-4. e-ISBN 978-3-0357-3072-2. ISSN 1013-9826. e-ISSN 1662-9795. Pieejams: doi:10.4028/www.scientific.net/KEM.721.399

Publikācijas valoda
English (en)
RTU Zinātniskā bibliotēka.
E-pasts: uzzinas@rtu.lv; Tālr: +371 28399196