{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/11477"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/11477","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"The effect of carbon dioxide on the growth and activity of leptospirillum ferriphilum","abstract":"Microbial oxidation rates catalysed by the acidophilic micro-organisms mediating mesophilic and thermophilic bioleaching of mineral sulphides have been well characterised under conditions typical of active tank leaching processes in the mineral industry. However, with the increasing need to beneficiate low grade ores, heap bioleaching processes are increasingly of interest. The physicochemical conditions within the heap bioleach differ considerably from the tank leaching system in terms of typical iron concentration, presence of dissolved salts and dissolved gases. This study focuses particularly on the kinetic description of the microbial ferrous oxidation rate and the microbial growth rate of the Leptospirillum species under conditions where the supply of carbon dioxide is limited.","abstract_html":"Microbial oxidation rates catalysed by the acidophilic micro-organisms mediating mesophilic and thermophilic bioleaching of mineral sulphides have been well characterised under conditions typical of active tank leaching processes in the mineral industry. However, with the increasing need to beneficiate low grade ores, heap bioleaching processes are increasingly of interest. The physicochemical conditions within the heap bioleach differ considerably from the tank leaching system in terms of typical iron concentration, presence of dissolved salts and dissolved gases. This study focuses particularly on the kinetic description of the microbial ferrous oxidation rate and the microbial growth rate of the Leptospirillum species under conditions where the supply of carbon dioxide is limited.","abstract_has_math":false,"creators":["Naik, Linus"],"institution":"Centre for Bioprocess Engineering Research","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Harrison, STL","Petersen, Jochen"],"committee_chairs":[],"committee_members":[],"year":2010,"date_issued":"2010","date_published":"2010","updated_at":"2026-07-22T22:23:49Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/11477","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Harrison, STL","Petersen, Jochen"]},{"key":"dc:creator","label":"Author","values":["Naik, Linus"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-01-05T18:48:07Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-01-05T18:48:07Z"]},{"key":"dc:date.issued","label":"Date","values":["2010"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Centre for Bioprocess Engineering Research"]},{"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"]}]},{"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/11427/11477"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Includes bibliographical references (leaves 81-87)."]},{"key":"dc:description.abstract","label":"Abstract","values":["Microbial oxidation rates catalysed by the acidophilic micro-organisms mediating mesophilic and thermophilic bioleaching of mineral sulphides have been well characterised under conditions typical of active tank leaching processes in the mineral industry. However, with the increasing need to beneficiate low grade ores, heap bioleaching processes are increasingly of interest. The physicochemical conditions within the heap bioleach differ considerably from the tank leaching system in terms of typical iron concentration, presence of dissolved salts and dissolved gases. This study focuses particularly on the kinetic description of the microbial ferrous oxidation rate and the microbial growth rate of the Leptospirillum species under conditions where the supply of carbon dioxide is limited."]},{"key":"dc:title","label":"Title","values":["The effect of carbon dioxide on the growth and activity of leptospirillum ferriphilum"]}]}],"canonical_facts":{"dc:contributor.advisor":["Harrison, STL","Petersen, Jochen"],"dc:creator":["Naik, Linus"],"dc:date.accessioned":["2015-01-05T18:48:07Z"],"dc:date.available":["2015-01-05T18:48:07Z"],"dc:date.issued":["2010"],"dc:description":["Includes bibliographical references (leaves 81-87)."],"dc:description.abstract":["Microbial oxidation rates catalysed by the acidophilic micro-organisms mediating mesophilic and thermophilic bioleaching of mineral sulphides have been well characterised under conditions typical of active tank leaching processes in the mineral industry. However, with the increasing need to beneficiate low grade ores, heap bioleaching processes are increasingly of interest. The physicochemical conditions within the heap bioleach differ considerably from the tank leaching system in terms of typical iron concentration, presence of dissolved salts and dissolved gases. This study focuses particularly on the kinetic description of the microbial ferrous oxidation rate and the microbial growth rate of the Leptospirillum species under conditions where the supply of carbon dioxide is limited."],"dc:identifier.uri":["http://hdl.handle.net/11427/11477"],"dc:language.iso":["eng"],"dc:publisher.department":["Centre for Bioprocess Engineering Research"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["The effect of carbon dioxide on the growth and activity of leptospirillum ferriphilum"],"dc:type":["Master Thesis"],"dc:type.qualificationlevel":["Masters"],"dc:type.qualificationname":["MSc"]},"updated_at":"2026-07-22T22:23:49Z"}