Study of selective removal of CoS and NiS during purification of MnSO₄ electrolyte

This research project investigated the selective removal of Co²⁺ and Ni²⁺ from a Co-Ni-Mn system through sulphide precipitation. The Co²⁺ and Ni²⁺ ions have adverse effects on the purity of the manganese product, thus, have to be removed via precipitation in a purification step. The main objective of this research was to understand the influence of local supersaturation on the purification process. This was important for controlling such a process to achieve residual ion concentrations of 0.3 ppm and 1.0 ppm for Co²⁺ and Ni²⁺ ions respectively, with minimum loss of the Mn²⁺ ions.

Grantor dc:publisher.institution

Department of Chemical Engineering

Year dc:date.issued

2015

Author dc:creator

• Dube, Vuyiswa

Advisors dc:contributor.advisor

• Lewis, Alison Emslie
• Pascual, Marcos Rodriguez

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/11427/13710

OAI identifier oai:identifier

oai:open.uct.ac.za:11427/13710