Determination of scandium in acid mine drainage by ICP-OES with flow injection on-line preconcentration using oxidized multiwalled carbon nanotubes

Jerez, Javier; Isaguirre, Andrea C.; Bazán, Cristian; Martínez, Luis D.; Cerutti, Soledad

doi:10.1016/j.talanta.2014.02.028

Cited by 38 publications

(17 citation statements)

References 45 publications

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“…Sc is used in strength alloys, which are used for airplane construction and sports equipment, including bicycle frames and baseball bats , because a small amount of Sc in aluminum (Al) enhances Al‐alloy strength. Sc is also used to make semiconductors and metal halide lamps and new demand for Sc is expected for future fuel cells, aerospace applications and in specialty metal alloys . Sc supply is insufficient because it exists in many ores only in trace amounts and is produced in few countries such as China, Kazakhstan, Russia and Ukraine .…”

Section: Introductionmentioning

confidence: 99%

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Development of novel adsorbent bearing aminocarbonylmethylglycine and its application to scandium separation

Zhao

Baba

Yoshida

et al. 2016

J. Chem. Technol. Biotechnol.

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BACKGROUND Scandium (Sc) is an important metal element in high‐technology industries and the demand for Sc has been increasing annually. However, because metallurgical processes for its purification and recovery are complex, an effective technique for its separation is required. This paper reports on the development of novel adsorbents that are capable of separating Sc efficiently. RESULTS Novel adsorbents were prepared by introducing aminocarbonylmethylglycine functional groups onto two types of support materials, silica gels for determining suitable preparation conditions and an organic resin for practical use. Scandium adsorption and separation were carried out in sulfuric media using these adsorbents. The adsorbents exhibited high selectivity to Sc from Mg, Al, Ca, Cr, Mn, Co and Ni except for Fe(III). Adsorption–desorption experiments were conducted to examine the adsorbent reusability. The adsorbents showed similar results in reuse tests without any obvious loss. CONCLUSIONS Aminocarbonylmethylglycine functional group introduction proved effective and efficient for Sc adsorption. The newly synthesized adsorbents showed high affinity for Sc and Fe(III). Sc was separated selectively from Fe by reducing Fe(III) to Fe(II) because the adsorbent showed no affinity for divalent Fe(II). The new resin based adsorbent can be used for the practical separation of Sc. © 2016 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

“…Adsorption isotherms of Sc on adsorbents (adsorbents: 50 mg, aqueous phase: 5 mL, equilibrium pH 3, [SO4 2− ] = 0.1 mol L −1 ). Sc 3+ + 2 (HR) 2 = ScR 3 HR + 3H +…”

mentioning

confidence: 99%

Development of novel adsorbent bearing aminocarbonylmethylglycine and its application to scandium separation

Zhao

Baba

Yoshida

et al. 2016

J. Chem. Technol. Biotechnol.

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“…At the primitive stage, nearly all noncovalent functionalization of CNTs focused on sorting out and dispersing them by chemical oxidation in acidic media, where the acid not only breaks up any residual metal catalyst but also eliminates the CNT caps, leaving behind COOH residue (Yin et al 2014;Jerez et al 2014). The oxidized CNTs are easily dispersible in a variety of NH-R organic solvents, under the impact of an ultrasonic force field (Lertrojanachusit et al 2013;Parveen et al 2013).…”

Section: Oxidized Functionalization Cntsmentioning

confidence: 99%

Multifunctionalized Carbon Nanotubes Polymer Composites: Properties and Applications

Julkapli

Sapuan

2015

Advanced Structured Materials

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Carbon nanotubes (CNTs) is a rigid rod-like nanoscale material produced from carbon in powder, liquid, or gel form via acid or chemical hydrolysis. Due to its unique and exceptional renewability, biodegradability, mechanical, physicochemical properties, and abundance, the incorporation associated with a small quantity of CNTs to polymeric matrices enhance the mechanical and thermal resistance, and also stability of the latter by several orders of magnitude. Moreover, NCC-derived carbon materials are of no serious threat to the environment, providing further impetus for the development and applications of this green and renewable biomaterial for lightweight and degradable composites. Surface functionalization of CNTs remains the focus of CNTs research in tailoring its properties for dispersion in hydrophilic and hydrophobic media. Through functionalization, the attachment of appropriate chemical functionalities between conjugated sp 2 of CNTs and polymeric matrix is established. It is thus of utmost importance that the tools and protocols for imaging CNTs in a complex matrix and quantify its reinforcement, antimicrobial, stability, hydrophilicity, and biodegradability are be developed.

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“…It is well-known that SPE materials decide the sensitivity and selectivity of the SPE-based method. And a great deal of new SPE adsorbents have been explored for the preconcentration of REEs, including chelating resin [19], 2,6-diacetylpyridine functionalized Amberlite XAD-4 [20], graphene oxide-TiO 2 composite [21], acetylacetone-modified silica gel [22], oxidized multiwalled carbon nanotubes [23], polystyrene grafted with diethylene-triaminetetraacetic groups [24] etc. Besides, biomaterials have attained special interest due to their attractive features, such as easy-to-get, low cost, high efficiency, mild operation condition and ecologically-safe [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization and application of Saussurea tridactyla Sch-Bip as green adsorbents for preconcentration of rare earth elements in environmental water samples

Zhang

Chen

et al. 2016

Spectrochimica Acta Part B: Atomic Spectroscopy

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Determination of scandium in acid mine drainage by ICP-OES with flow injection on-line preconcentration using oxidized multiwalled carbon nanotubes

Cited by 38 publications

References 45 publications

Development of novel adsorbent bearing aminocarbonylmethylglycine and its application to scandium separation

Development of novel adsorbent bearing aminocarbonylmethylglycine and its application to scandium separation

Multifunctionalized Carbon Nanotubes Polymer Composites: Properties and Applications

Preparation, characterization and application of Saussurea tridactyla Sch-Bip as green adsorbents for preconcentration of rare earth elements in environmental water samples

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