Evaluation of shrinking core model in leaching process of Pomalaa nickel laterite using citric acid as leachant at atmospheric conditions

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dc.contributor.author Wanta, Kevin Cleary
dc.contributor.author Perdana, Indra
dc.contributor.author Petrus, Himawan T.B.M.
dc.date.accessioned 2018-05-02T08:18:25Z
dc.date.available 2018-05-02T08:18:25Z
dc.date.issued 2017
dc.identifier doi:10.1088/1757-899X/162/1/012018
dc.identifier.issn 1757-899X
dc.identifier.other artsc186
dc.identifier.uri http://hdl.handle.net/123456789/5702
dc.description IOP CONFERENCE SERIES: MATERIAL SCIENCE AND ENGINEEERING; 162 (2017) en_US
dc.description Second International Conference on Chemical Engineering (ICCE) UNPAR
dc.description.abstract Most of kinetics studies related to leaching process used shrinking core model to describe physical phenomena of the process. Generally, the model was developed in connection with transport and/or reaction of reactant components. In this study, commonly used internal diffusion controlled shrinking core model was evaluated for leaching process of Pomalaa nickel laterite using citric acid as leachant. Particle size was varied at 60-70, 100-120, -200 meshes, while the operating temperature was kept constant at 358 K, citric acid concentration at 0.1 M, pulp density at 20% w/v and the leaching time was for 120 minutes. Simulation results showed that the shrinking core model was inadequate to closely approach the experimental data. Meanwhile, the experimental data indicated that the leaching process was determined by the mobility of product molecules in the ash layer pores. In case of leaching resulting large product molecules, a mathematical model involving steps of reaction and product diffusion might be appropriate to develop. en_US
dc.description.uri http://iopscience.iop.org/article/10.1088/1757-899X/162/1/012018
dc.language.iso en en_US
dc.publisher IOP Publishing en_US
dc.relation.ispartofseries IOP CONFERENCE SERIES: MATERIAL SCIENCE AND ENGINEEERING;162 (2017)
dc.title Evaluation of shrinking core model in leaching process of Pomalaa nickel laterite using citric acid as leachant at atmospheric conditions en_US
dc.type Journal Articles en_US


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