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Progress in bioleaching: part B, applications of microbial processes by the minerals industries Open
This review provides an update to the last mini-review with the same title pertaining to recent developments in bioleaching and biooxidation published in 2013 (Brierley and Brierley). In the intervening almost 10 years, microbial processes…
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Scandium speciation in a world-class lateritic deposit Open
aerospace and automotive industries.In solid oxide fuel cells, the addition of Sc to the electrolyte improves conductivity and lowers the operating temperature, extending fuel cell life.Despite a crustal abundance of ca.22 ppm (Rudnick and…
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Groundwater Exploration in Aaba Residential Area of Akure, Nigeria Open
Groundwater plays a fundamental role in human life. Despite its indispensable characteristics, it is unfortunate that groundwater is often associated with low yield. The expanding demand for water and the cost involved in drilling borehole…
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Nickel Laterite Smelting Processes and Some Examples of Recent Possible Modifications to the Conventional Route Open
The treatment of laterites has been a research hotspot in extractive metallurgy over the past decades. Industrially, the pyrometallurgical treatment of laterites is mostly accomplished with a well-established method, namely, the rotary kil…
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Cu and Zn isotope fractionation during extreme chemical weathering Open
Copper and Zn are trace metal micronutrients whose stable isotope systematics are receiving increasing attention as possible paleoenvironmental tracers. However, to realise this potential, their behaviour during chemical weathering must be…
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Cobalt and Nickel Separation in Nitric Acid Solution by Solvent Extraction Using Cyanex 272 and Versatic 10 Open
Recent trend in extraction of nickel and cobalt from laterite ore through hydrometallurgical route is by using leaching agents that can be effectively regenerated, such as hydrochloric and nitric acid. Despite success stories of nickel lat…
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Characterization of laterite soil and its use in construction applications: A review Open
Laterisation is an uncontrolled natural process that was influenced by the synergetic effect of atmospheric and geological conditions. Laterite soil 'leached residue' is the resultant from the process of laterisation and is widely distribu…
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Adsorption mechanism of shell powders on heavy metal ions Pb2+/Cd2+ and the purification efficiency for contaminated soils Open
The adsorption capacity of oyster shell powders (SPs) and the adsorption mechanism of heavy metal ions (HMs; i.e., cadmium ions Cd 2+ and lead ions Pb 2+ ) on SPs are discussed by means of adsorption kinetics tests, adsorption-desorption t…
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Review of the past, present, and future of the hydrometallurgical production of nickel and cobalt from lateritic ores Open
Laterite ores are becoming the most important global source of nickel and cobalt. Pyrometallurgical processing of the laterites is still a dominant technology, but the share of nickel and cobalt produced by the application of various hydro…
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Evaluation of the performance of eco-friendly lightweight interlocking concrete paving units incorporating sawdust wastes and laterite Open
This research investigates the performance of sawdust wastes and laterite as an alternative lightweight fine aggregate and cementitious material respectively in eco-friendly lightweight interlocking concrete paving units (ICPU) using a mix…
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Selective Reduction of Laterite Nickel Ore Open
Nickel is an important metal in the industry. To obtain nickel metal, the extraction process from nickel ore should be conducted. Recently, nickel ore resources from sulphide ore becomes rare which makes nickel laterite ore as the future o…
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Adsorptive Removal of Copper by Using Surfactant Modified Laterite Soil Open
Removal of copper ion (Cu 2+ ) by using surfactant modified laterite (SML) was investigated in the present study. Characterizations of laterite were examined by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), indu…
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Improved beneficiation of nickel and iron from a low-grade saprolite laterite by addition of limonitic laterite ore and CaCO3 Open
As is well known, the process of direct reduction and magnetic separation is effective route to deal with low-grade saprolite laterite, but generally limited by the reduction of nickel (iron)-bearing minerals and growth of Fe-Ni alloy part…
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Concentration and Separation of Scandium from Ni Laterite Ore Processing Streams Open
The presence of a considerable amount of scandium in lateritic nickel-cobalt ores necessitates the investigation of possible processing alternatives to recover scandium as a byproduct during nickel and cobalt production. Therefore, in this…
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High pressure acid leaching: a newly introduced technology in Indonesia Open
PT Halmahera Persada Lygend (PTHPL) plans to construct new technology for nickel laterite ore processing in Obi Island, North Maluku Province. The facility is expected to produce 247,000 tonnes of NiSO4.7H2O and 32,000 tonnes of CoSO4.7H2O…
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Thermodynamics of the Reduction Roasting of Nickeliferous Laterite Ores Open
The global nickel sulphide resources are becoming more difficult to mine and, as a result, there is increasing interest in the current and future development of the oxidic nickel laterite deposits. In comparison to the sulphide ores, the n…
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Reductive bioprocessing of cobalt-bearing limonitic laterites Open
Demand for cobalt is increasing worldwide, primarily as a result of its use in rechargeable batteries, super-alloys, and the chemicals industry. Extraction and recovery of cobalt from primary ores and waste materials using (novel) bioproce…
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Alkali-activated laterite binders: Influence of silica modulus on setting time, Rheological behaviour and strength development Open
This paper present the results from a comprehensive study undertaken to investigate and develop alkali-activated binders (AABs) with laterite soil as the aluminosilicate precursor. In this study, the effect of the silica modulus (SiO2/Na2O…
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Effect of iron oxidation state for copper recovery from nickel laterite leach solution using chelating resin Open
The goal of this work was to study the effect of iron oxidation state for Cu(II) recovery. Two different solutions of nickel laterite leach were prepared with Fe(III) and with Fe(II) for the experiments. FTIR of the chelating resin were an…
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Comparative performance of limestone calcined clay and limestone calcined laterite blended cement concrete Open
The global availability and abundance of clay soil and limestone have recently driven research for their combined use as supplementary cementitious material (SCMs). In tropical regions, laterite (which has similar chemical signature to cla…
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Overcoming the bacteriostatic effects of heavy metals on Acidithiobacillus thiooxidans for direct bioleaching of saprolitic Ni laterite ores Open
In this study, the adaptation of Acidithiobacillus thiooxidans to heavy metals leached from saprolitic Ni laterite ores from Riverina, Australia, was performed by gradual acclimatisation. The microorganism was cultivated in heavy metals (N…
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Soil-cement bricks produced from local clay brick waste and soft sludge from fiber cement production Open
Soil-cement bricks were produced using local clay brick waste (CBW) and soft sludge (SS) from fiber-cement industries, preserving raw resources by substituting with industrial wastes. The control formula to produce soil-cement bricks, is 1…
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Preparing Ferro-Nickel Alloy from Low-Grade Laterite Nickel Ore Based on Metallized Reduction–Magnetic Separation Open
Nickel, a valued metal, mainly exists as nickel oxide in laterite nickel ore. Furthermore, a large part of the laterite nickel ore is low-grade saprolitic ore. In this paper, a research on preparing ferro-nickel alloy from low-grade saprol…
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Recovery of nickel and cobalt from nickel laterite leach solution using chelating resins and pre‐reducing process Open
The aim of this work was to recover nickel and cobalt from a nickel laterite leach solution using chelating resins combined with a pre‐reducing process. Sodium sulphite was used as a reducing agent to convert Fe(II) from Fe(III) and increa…
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Removal of Hydrogen Sulfide from Biogas using Laterite Materials as an Adsorbent Open
In this work, removal of hydrogen sulfide contained in biogas was studied using a new adsorbent, laterite, owning to their high composition of Iron (ІІ) oxide. In the first step, the interaction between five principle compositions of bioga…
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Integrated geophysical methods and techniques for siting productive boreholes in basement complex terrain of southwestern Nigeria Open
Electrical resistivity survey involving 2D Dipole-Dipole subsurface imaging and 1D Vertical Electrical Sounding (VES) and an integrated magnetic and electrical resistivity survey involving magnetic profiling and 1D VES/2D electrical imagin…
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Copper recovery from nickel laterite with high‐iron content: A continuous process from mining waste Open
The waste product from the hydrometallurgical processing of nickel laterite ores can contain valuable metals, making their recovery economically viable. However, the high‐impurities content, mainly iron, makes the process technically unfea…
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Effect of mineralogy on Co and Ni extraction from Brazilian limonitic laterites via bioleaching and chemical leaching Open
Iron-rich, limonitic laterites may contain economic grades of nickel and cobalt, but efficient extraction of these metals from such ores is still a challenge. In this study, four samples of limonitic laterites originating from the Barro Al…
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Microhyla laterite sp. nov., A New Species of Microhyla Tschudi, 1838 (Amphibia: Anura: Microhylidae) from a Laterite Rock Formation in South West India Open
In recent times, several new species of amphibians have been described from India. Many of these discoveries are from biodiversity hotspots or from within protected areas. We undertook amphibian surveys in human dominated landscapes outsid…
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Mechanistic and Kinetic Analysis of Na2SO4-Modified Laterite Decomposition by Thermogravimetry Coupled with Mass Spectrometry Open
Nickel laterites cannot be effectively used in physical methods because of their poor crystallinity and fine grain size. Na2SO4 is the most efficient additive for grade enrichment and Ni recovery. However, how Na2SO4 affects the selective …