{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/13710"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/13710","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"Study of selective removal of CoS and NiS during purification of MnSO₄ electrolyte","abstract":"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.","abstract_html":"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.","abstract_has_math":false,"creators":["Dube, Vuyiswa"],"institution":"Department of Chemical Engineering","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Lewis, Alison Emslie","Pascual, Marcos Rodriguez"],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015","date_published":"2015","updated_at":"2026-07-22T22:23:12Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/13710","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Lewis, Alison Emslie","Pascual, Marcos Rodriguez"]},{"key":"dc:creator","label":"Author","values":["Dube, Vuyiswa"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-08-12T04:04:26Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-08-12T04:04:26Z"]},{"key":"dc:date.issued","label":"Date","values":["2015"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Chemical Engineering"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Master Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Masters"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["MSc (Eng)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/13710"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["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."]},{"key":"dc:title","label":"Title","values":["Study of selective removal of CoS and NiS during purification of MnSO₄ electrolyte"]}]}],"canonical_facts":{"dc:contributor.advisor":["Lewis, Alison Emslie","Pascual, Marcos Rodriguez"],"dc:creator":["Dube, Vuyiswa"],"dc:date.accessioned":["2015-08-12T04:04:26Z"],"dc:date.available":["2015-08-12T04:04:26Z"],"dc:date.issued":["2015"],"dc:description.abstract":["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."],"dc:identifier.uri":["http://hdl.handle.net/11427/13710"],"dc:language.iso":["eng"],"dc:publisher.department":["Department of Chemical Engineering"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["Study of selective removal of CoS and NiS during purification of MnSO₄ electrolyte"],"dc:type":["Master Thesis"],"dc:type.qualificationlevel":["Masters"],"dc:type.qualificationname":["MSc (Eng)"]},"updated_at":"2026-07-22T22:23:12Z"}