Effect of Pulp Density and Particle Size on Indirect Bioleaching of Pomalaa Nickel Laterite Using Metabolic Citric Acid

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dc.contributor.author Petrus, Himawan T.B.M.
dc.contributor.author Wanta, Kevin Cleary
dc.contributor.author Setiawan, H.
dc.contributor.author Perdana, Indra
dc.contributor.author Astuti, W.
dc.date.accessioned 2018-05-08T08:50:47Z
dc.date.available 2018-05-08T08:50:47Z
dc.date.issued 2018
dc.identifier.issn 1757-899X
dc.identifier.other artsc286
dc.identifier.uri http://hdl.handle.net/123456789/5918
dc.description IOP CONFERENCE SERIES: MATERIALS SCIENCE AND ENGINEERING; 285 (2018). en_US
dc.description.abstract Nickel laterite ore contains oxide of iron, aluminum or both with nickel, cobalt and chromium which can be leached out using hydrometallurgical process. For the purpose of meeting the world’s increasing demand of nickel, there is a need to invent environmentally friendly process to efficiently leach nickel. This experiment used nickel laterite ore obtained from Pomalaa, South Sulawesi. The leaching agent is metabolic citric acid produced by Aspergillus niger under optimum condition. Leaching process was done in three-necked flask in atmospheric temperature and constant stirring speed of 200 rpm. The variable examined in the experiment was pulp density and particle size of nickel laterite ore. Samples were taken at 3, 7, 10, 14, and 17 minutes and then filtered and diluted to be analyzed using ICP-AES. The result of the experiment showed the maximum recovery of metals increase with the decrease of the pulp density. The maximum recovery for varying pulp density were at 5% solid/liquid ratio and the recovery were Ni at 1.63%, Al at 0.47%, Fe at 0.23% and Mg at 1.09%. The effect of particle size on leaching process showed that the leaching process follows the shrinking core model. The maximum recovery of metals at particle size were at 100-120 mesh with Ni at 1.37%, Fe at 0.10%, Al at 0.72% and Mg at 0.62%. en_US
dc.description.uri http://iopscience.iop.org/issue/1757-899X/285/1
dc.language.iso en en_US
dc.publisher IOP Publishing en_US
dc.relation.ispartofseries IOP CONFERENCE SERIES: MATERIALS SCIENCE AND ENGINEERING;285 (2018).
dc.title Effect of Pulp Density and Particle Size on Indirect Bioleaching of Pomalaa Nickel Laterite Using Metabolic Citric Acid en_US
dc.type Journal Articles en_US


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