2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 10: Mineral & Secondary Battery
| Editors: | Kongoli F, Silva AC, Arol AI, Kumar V, Aifantis K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 340 pages |
| ISBN: | 978-1-987820-33-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Detection of Ni (II) in Pb (II)-rich waste solution by Competing Ligand Exchange-Adsorptive Stripping Voltammetry
Yingjun Liu1; Shaojun Xie2; Yugao Sun2; Zhen Yang2; Vasant Kumar3;1UNIVERSITY OF CAMBRIDGE, Cambridge, Great Britain; 2, Huizhou, China; 3UNIVERSITY OF CAMBRIDGE, Cambridge, United Kingdom (Great Britain);
Type of Paper: Regular
Id Paper: 550
Topic: 14
Abstract:
The main aim of the work reported here is to explore the feasibility of competing ligand exchange-adsorptive stripping voltammetry (CLE-AdSV) technique to study speciation of Ni(II) in Pb-rich solution. A general introduction of competing ligand exchange (CLE) and adsorptive stripping voltammetry (AdSV) techniques are presented. Cyclam, a Ni(II) complex ligand, and its redox properties is investigated in different solution conditions. The complex formation equilibrium of NiCy is then investigated. Its competition with metal ions (Fe(III), Cu(II), Zn (II) and Pb(II)) and citrate ion is simulated based on complex formation equilibrium. Then attention is brought to the optimisation of the stripping parameters to achieve maximisation of sensitivity and selectivity. Finally some of these experimental results are explained with the application of aqueous solution theory.