Beneficiation of Nickel from Ultramafic Ores: Using Sodium Citrate as a Green Processing Reagent

Wani, Omar Bashir; Manzoor, Sama; Molaei, Nahid; Shoaib, Mohammad; Khan, Shaihroz; Zeng, Hongbo; Bobicki, Erin R.

doi:10.1016/j.resconrec.2022.106496

Cited by 12 publications

(3 citation statements)

References 41 publications

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“…The results indicated that C 6 H 5 Na 3 O 7 and BSA shielded most of the metal ions, which was in agreement with previous studies. 32,33 The optimized concentrations of C 6 H 5 Na 3 O 7 and BSA were 5 nM and 80 ng/mL, respectively (Figure S6C,D). Under the optimized concentrations, the maximum values of F 0 − F were obtained.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Low-Cost Full-Range Detection of C-Reactive Protein in Clinical Samples by Aptamer Hairpin Probes and Coprecipitation of Silver Ions and Gold Nanoparticles

Yan

Shao

et al. 2023

Anal. Chem.

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C-reactive protein (CRP) levels can vary widely related to diverse disease contexts. However, expensive antibodies have impeded the clinical utility of antibody-based full-range CRP assays, especially in developing countries. Herein, we established a low-cost, antibody-free, 96well plate-based full-range CRP detection method by combining gold nanoparticles (AuNPs), silver iodide (AgI), Eosin Y, and the aptamer hairpin probe (AHP) with Ag + -mediated cytosine−cytosine mismatches, that is, the Au@AgI/Eosin Y-AHP method. After binding the target CRP, the AHP released Ag + , which subsequently induced the aggregation of AuNPs on the surface of AgI colloids, resulting in a significant increase in the adsorption of Eosin Y on the surface of AuNPs. The changes in fluorescence intensity (FI) of Eosin Y in the supernate without and with CRP were proportional to the concentration of the CRP in the wide range of 0.01−40 ng/mL (r = 0.9969), and 96 samples can be detected in 96-well plates simultaneously by a microplate reader within 45 min. Remarkably, the CRP levels of 100 clinical samples achieved with the Au@ AgI/Eosin Y-AHP had a good correlation with those obtained with the latex-enhanced immune turbidimetry assay (r = 0.986). Furthermore, the kit based on the Au@AgI/Eosin Y-AHP method costs only $8.1 for 100 tests. Therefore, the new method is beneficial for less developed areas where expensive assays are not affordable.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Low-Cost Full-Range Detection of C-Reactive Protein in Clinical Samples by Aptamer Hairpin Probes and Coprecipitation of Silver Ions and Gold Nanoparticles

Yan

Shao

et al. 2023

Anal. Chem.

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“…This approach proves advantageous in mitigating water stress by incorporating seawater into mineral beneficiation processes [48,49,52]. In addition, and as part of their commitment to sustainable development, mining companies have adopted a circular economic approach to recycle the water that they use during ore processing and from tailing storage facilities and thickeners in order to minimize water consumption [25,29,48,[53][54][55][56].…”

Section: Water Consumption In the Mining Industrymentioning

confidence: 99%

Towards a Circular Economy in the Mining Industry: Possible Solutions for Water Recovery through Advanced Mineral Tailings Dewatering

Hamraoui,

Bergani,

Ettoumi

et al. 2024

Minerals

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The mining industry is confronted with substantial challenges in achieving environmental sustainability, particularly regarding water usage, waste management, and dam safety. The increasing global demand for minerals has led to increased mining activities, resulting in significant environmental consequences. By 2025, an estimated 19 billion tons of solid tailings are projected to accumulate worldwide, exacerbating concerns over their management. Tailings storage facilities represent the largest water sinks within mining operations. The mismanagement of water content in tailings can compromise their stability, leading to potential dam failures and environmental catastrophes. In response to these pressing challenges, the mining industry is increasingly turning to innovative solutions such as tailings dewatering and water reuse/recycling strategies to promote sustainable development. This review paper aims to (I) redefine the role of mine tailings and explore their physical, chemical, and mineralogical characteristics; (II) discuss environmental concerns associated with conventional disposal methods; (III) explore recent advancements in dewatering techniques, assessing their potential for water recovery, technical and economic constraints, and sustainability considerations; (IV) and present challenges encountered in water treatment and recycling within the mining industry, highlighting areas for future research and potential obstacles in maximizing the value of mine tailings while minimizing their environmental impact.

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“…Such high metal levels inhibit germination of seeds, threaten survival of seedlings and suppress lateral root development, owering and fruiting thus resulting in poor recruitment(Peralta et al, 2009;Naz et al, 2022). High Ni and Cr also inhibit nutrient uptake by forming insoluble compounds(Echevarria et al 2006;Manzoor et al 2020;Wani et al 2022…”

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confidence: 99%

Edaphic and topographic gradients have differential influence on woody species assemblages on ultramafic and non-ultramafic soils in an African Savanna

Nyenda,

Musungwa,

Piyo

et al. 2023

Plant Soil

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Background and aimsUnderstanding the determinants of plant species associations on unique serpentine substrates is crucial for restoration ecology yet understudied. We investigated the in uence of local edaphic and topographic gradients on woody species associations on serpentine and non-serpentine soils along the Zimbabwe great Dyke. MethodsVegetation attributes were assessed in 62 plots located on serpentine and adjacent non-serpentine patches at varying slope magnitude and orientation. Plant community comparisons and relationships with soil and topographic variables were analyzed using ANOVA and ordinations. ResultsAspect had more in uence on woody composition, species associations and densities on-compared with off-serpentine soils. Lower species richness, tree/shrub densities were observed on-serpentine than nonserpentine patches. Soil Mg, Mg/Ca ratio, total Ni, Cr and Mn, and available Ni were signi cantly higher on-Serpentine than off-serpentine patches. All parameters (pH, Ca, Mg, Mg/Ca ratio; available Ni, Cr, Mn and total Mn) were similar between Serpentine east-and west-facing slopes, but only total Cr and Ni were higher on east-facing slopes. Only available Ni and Mn were higher on Serpentine piedmont than on slopes. Tree/shrub density and species richness were positively correlated to available Mn and Cr while negatively correlated to total and available Ni, pH, Mg/ca ratio and herbaceous plant cover. ConclusionVegetation patterns on serpentine substrates are partly driven by intra-site edaphic (metals and Ca/Mg ratios) and topographic gradients. Aspect has differential in uence on woody vegetation assemblages on serpentine and non-serpentine substrates. Combinations of species and environmental determinants observed can be used in mine site rehabilitation planning.

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Beneficiation of Nickel from Ultramafic Ores: Using Sodium Citrate as a Green Processing Reagent

Cited by 12 publications

References 41 publications

Low-Cost Full-Range Detection of C-Reactive Protein in Clinical Samples by Aptamer Hairpin Probes and Coprecipitation of Silver Ions and Gold Nanoparticles

Low-Cost Full-Range Detection of C-Reactive Protein in Clinical Samples by Aptamer Hairpin Probes and Coprecipitation of Silver Ions and Gold Nanoparticles

Towards a Circular Economy in the Mining Industry: Possible Solutions for Water Recovery through Advanced Mineral Tailings Dewatering

Edaphic and topographic gradients have differential influence on woody species assemblages on ultramafic and non-ultramafic soils in an African Savanna

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