A novel method: Nickel and cobalt extraction from citric acid leaching solution of nickel laterite ores using oxalate precipitation

Astuti, Widi; Nurjaman, Fajar; Mufakhir, Fika Rofiek; Sumardi, Slamet; Avista, Dira; Wanta, Kevin Cleary; Petrus, Himawan Tri Bayu Murti

doi:10.1016/j.mineng.2022.107982

Cited by 32 publications

(9 citation statements)

References 25 publications

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“…The field sampling was carried out in August 2022. The field condition of the sample collection location is presented in detail in In this study, we followed the previous study to mineralogically and chemically characterize the rock sample [11]. Firstly, we dried overnight the rock samples at 50°C.…”

Section: Data Collection and Methodsmentioning

confidence: 99%

Revealing the rock heterogeneity in Sebau, Lombok Island by applying morphological and elemental composition analyses

Febriani,

Zubaidah,

Herbani

et al. 2023

J. Phys.: Conf. Ser.

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Lombok Island is situated in east Indonesia. Its heterogeneity is very complex. It is one of the seismically and volcanically active regions in Indonesia. Several earthquakes occurred on Lombok Island in July-August 2018. Lombok Island is also known as the place of an active volcano (Mt. Rinjani) and geothermal resources in Indonesia. We applied the morphological and elemental composition analyses to know in more detail the rock heterogeneity in Lombok Island by using X-ray fluorescence (XRF), field emission-scanning electron microscopy/energy-dispersive X-ray spectroscopy (FESEM-EDS), and X-ray Powder Diffraction (XRD). In this study, we chose the Sebau hot springs as the study area and collected the rock sample in the study area in August 2022. The FESEM-EDS result shows that the crystalline structures of the rock sample have a compact, unconsolidated, and fine structure with some layers. The significant elements of the rock samples by applying XRF analysis are Si (36.91%) and Fe (30.787%). It is also supported by the XRD analysis that revealed the dominant compounds in the rock samples are pyrite (FeS2) and cristobalite (SiO2). Therefore, there is an indication of the study area is the surface manifestation of the past Mount Rinjani volcanic activity.

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Section: Data Collection and Methodsmentioning

confidence: 99%

Revealing the rock heterogeneity in Sebau, Lombok Island by applying morphological and elemental composition analyses

Febriani,

Zubaidah,

Herbani

et al. 2023

J. Phys.: Conf. Ser.

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“…MOP results were obtained, which were minimum of impurities. The MOP is made by adopting previous research [37].…”

Section: Preparation Of Mixed Nickel-cobalt Oxalate Precipitate (Mop)...mentioning

confidence: 99%

“…The hydrometallurgical process is used for the recovery of high-purity laterite nickel [8], producing a leach solution (PLS) containing nickel and cobalt along with impurities such as Fe, Al, Cr, and Mn [9]. Precipitation is carried out to remove impurities from PLS so that a mixed precipitate of nickel and cobalt is obtained [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Separation of nickel and cobalt from nitrate leaching solutions of laterite ore by solvent extraction using trihexyltetradecylphosphonium bis (2,4,4-trimethyl pentyl) phosphinate

Yuda,

Avista,

Astuti

et al. 2024

E3S Web Conf.

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This study used solvent extraction to separate nickel and cobalt from nitrate leaching of mixed nickel-cobalt oxalate precipitate (MOP). Laterite ore was first leached using citric acid, and then leaching filtrate was mixed with oxalic acid to produce MOP. MOP was releached using nitric acid (1M) to prepare the aqueous phase as a feed for solvent extraction. Solvent extraction used the extractant trihexyltetradecylphosphonium bis (2,4,4-trimethyl pentyl) phosphate (Cyphos®IL 104) in kerosene. Solvent extraction experiments were conducted in the pH range of 6 to 7.6 (O/A ratio = 1 at 15 min). After separation, the concentration of the aqueous phase was analyzed using an ICP-Optical Emission Spectrometer (ICP-OES) to measure cobalt and nickel content. The results showed that the highest extraction efficiency of cobalt and nickel was obtained at pH 7.2, 99.97%, and 32.57%, respectively. At this optimum condition, the separation factor obtained for cobalt was 8008.66 and for nickel 0.0001, while cobalt was 3868.00 and nickel 0.48 for the ion distribution obtained. It indicates that at this condition, the extractant can extract cobalt to the organic phase, and nickel remains in the aqueous phase.

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“…At present, most hydrometallurgical facilities processing nickel laterite ores utilize intermediate precipitation methods to extract Ni and Co from the leaching solution. Typically, the leachate undergoes an initial neutralization to remove impurities such as iron (Fe), aluminum (Al), and chromium (Cr), which is subsequently followed by precipitation to separate Ni and Co [3,4]. It is noted that Ni and Co exhibit closely analogous aqueous chemical characteristics due to their proximate placement in the transition metal series of the periodic table.…”

Section: Introductionmentioning

confidence: 99%

Leaching of Nickel and Cobalt from a Mixed Nickel-Cobalt Hydroxide Precipitate Using Organic Acids

Hussaini,

Tita,

Kursunoglu

et al. 2024

Minerals

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Nickel (Ni) and cobalt (Co) are strategic metals that have found applications in a wide range of metallurgical and industrial uses. In this study, the dissolution of a mixed nickel–cobalt hydroxide precipitate using organic acids (citric, oxalic, and malic acid) was investigated. Citric acid was found to be the best leaching agent yielding the following dissolution rates: 91.2% Ni, 86.8% Co, and 90.8% Mn. Oxalic acid resulted in low dissolution, which is likely due to the formation of insoluble metal oxalates. The impact of acid concentration, leaching time, and temperature on metal dissolution was systematically examined. The optimal dissolution conditions were identified as 0.5 M citric acid at 30 °C for 30 min, utilizing a 1/20 solid/liquid ratio and a stirring speed of 400 revolutions per minute (rpm). The attempt to use oxidants, such as potassium permanganate (KMnO4) and hydrogen peroxide (H2O2), to achieve selective dissolution in an organic acid environment was not successful, which was different from that in the sulfuric acid case. As for the leaching kinetics in the organic acids, it seems that the leaching of Ni correlates with the Shrinking Core Model, specifically regarding porous-layer diffusion control. Based on the experimental results, the activation energy for the leaching of Ni was estimated to be 3.1 kJ/mol.

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A novel method: Nickel and cobalt extraction from citric acid leaching solution of nickel laterite ores using oxalate precipitation

Cited by 32 publications

References 25 publications

Revealing the rock heterogeneity in Sebau, Lombok Island by applying morphological and elemental composition analyses

Revealing the rock heterogeneity in Sebau, Lombok Island by applying morphological and elemental composition analyses

Separation of nickel and cobalt from nitrate leaching solutions of laterite ore by solvent extraction using trihexyltetradecylphosphonium bis (2,4,4-trimethyl pentyl) phosphinate

Leaching of Nickel and Cobalt from a Mixed Nickel-Cobalt Hydroxide Precipitate Using Organic Acids

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