Rationally designed dipicolinate-functionalized silica for highly efficient recovery of rare-earth elements from e-waste

Artiushenko, Olena; Zaitsev, Vladimir; Rojano, Wendy S.; Freitas, Gabriel A.; Nazarkovsky, Michael; Saint’Pierre, Tatiana Dillenburg; Jiang, Kai

doi:10.1016/j.jhazmat.2020.124976

Cited by 21 publications

(3 citation statements)

References 33 publications

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“…To improve the selectivity for metals, research has focused on the development of new sorbent materials that incorporate coordinating functional groups. Ligand examples include 1-(2-pyridylazo)- 2-naphthol (PAN), acetyl acetone (Acac), and chitosan, , N , N -dioctyl diglycolacid, dipicolinic acid, ethylenediaminetriacetic acid (EDTA), polyamide 6/nano-hydroxyapatite hybrid (PA6/n-HAp), phthaloyl diamide (PA), amino polycarboxylate, bis(ethylhexyl)amido diethylenetriaminepentaacetic acid (DTPA), , hydroxamate, 6-(2-thienyl)-2-pyridinecarboxaldehyde, 4-(2-thiazolylazo), polyhydroxamic acid, , fluorinated β-diketone, iminodiacetic acid (IDA), , 2,6-diacetylpyridine, and 8-hydroxyquinoline (8-HQ) . This strategy enhances selectivity by tailoring sorbents with a strong affinity to bind specific metals from complex sample matrices.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Poly(pyrrole-1-carboxylic acid) for Preconcentration and Determination of Rare Earth Elements and Heavy Metals in Water Matrices

Sunder

Rohanifar

Alipourasiabi

et al. 2021

ACS Appl. Mater. Interfaces

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Pyrrole was N-functionalized with solid carbon dioxide followed by chemical polymerization to create a new airstable, granular, and water-insoluble sorbent, poly(pyrrole-1carboxylic acid) (PPy-CO 2 ). PPy-CO 2 exhibited enhanced affinity for the sorption of metal ions compared to unfunctionalized PPy due to the incorporation of carboxylate functional groups directly onto the polymer backbone. As a freestanding sorbent material, immobilization to an additional solid support is not needed. Sorption, and therefore preconcentration, occurs simultaneously to achieve efficient removal and recovery of metal ions by a pHdependent sorption−desorption mechanism. PPy-CO 2 was evaluated on the analytical scale for the solid-phase extraction of a range of metal ions and found to efficiently preconcentrate rare earth elements (REEs), Th, and heavy metals (Cr, Fe, Cd, and Pb), which allowed quantitation by inductively coupled plasma mass spectrometry (ICP-MS). The impact of sorption parameters, such as solution pH, amount of sorbent, and sorption time, and the effect of desorption flow rate for recovery were investigated and optimized using ultrasound-assisted dispersive solid-phase extraction (UAD-SPE) with ICP-MS analysis. Maximum efficiency for sorption and recovery of most metal ions was achieved at a solution pH of 6.0, 10 mg of sorbent, a sorption time of 5 min, and desorption conditions of 1 mL of 2 M nitric acid applied at a flow rate of 0.25 mL min −1 . Detection limits for REEs and Th ranged from 0.2−3.4 ng L −1 for REEs and Th and 0.9−5.7 ng L −1 for heavy metals. Linear ranges from 0.1−1000 μg L −1 for REEs and 0.1− 500 μg L −1 for heavy metals and Th were also observed. PPy-CO 2 successfully preconcentrated and facilitated the determination of the targeted metal ions in water matrices of varying complexity, including tap water, well water, river water, and produced water samples. These results indicate the potential application of PPy-CO 2 for larger-scale recovery and removal of valuable or hazardous metal ions.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Poly(pyrrole-1-carboxylic acid) for Preconcentration and Determination of Rare Earth Elements and Heavy Metals in Water Matrices

Sunder

Rohanifar

Alipourasiabi

et al. 2021

ACS Appl. Mater. Interfaces

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“…Sorption processes have been widely designed for the recovery of rare earth elements, including functionalized silica [12], carbon-based sorbents [13], chemically modified membranes [14], metal organic framework [15], ion-exchange resins and chelating resins [16,17].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a New Phosphonate-Based Sorbent and Characterization of Its Interactions with Lanthanum (III) and Terbium (III)

et al. 2021

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High-tech applications require increasing amounts of rare earth elements (REE). Their recovery from low-grade minerals and their recycling from secondary sources (as waste materials) are of critical importance. There is increasing attention paid to the development of new sorbents for REE recovery from dilute solutions. A new generation of composite sorbents based on brown algal biomass (alginate) and polyethylenimine (PEI) was recently developed (ALPEI hydrogel beads). The phosphorylation of the beads strongly improves the affinity of the sorbents for REEs (such as La and Tb): by 4.5 to 6.9 times compared with raw beads. The synthesis procedure (epicholorhydrin-activation, phosphorylation and de-esterification) is investigated by XPS and FTIR for characterizing the grafting route but also for interpreting the binding mechanism (contribution of N-bearing from PEI, O-bearing from alginate and P-bearing groups). Metal ions can be readily eluted using an acidic calcium chloride solution, which regenerates the sorbent: the FTIR spectra are hardly changed after five successive cycles of sorption and desorption. The materials are also characterized by elemental, textural and thermogravimetric analyses. The phosphorylation of ALPEI beads by this new method opens promising perspectives for the recovery of these strategic metals from mild acid solutions (i.e., pH ~ 4).

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“…In contrast, biometallurgical methods exhibit lower recoveries, and superfluid extraction yields comparable results [203]. More specifically, hydrometallurgical methods had recoveries of 99%, >97% [204] 96.4%, and 99.8 [109].…”

Section: Bioleaching Processmentioning

confidence: 97%

Review of Methods for Obtaining Rare Earth Elements from Recycling and Their Impact on the Environment and Human Health

Gkika,

Chalaris,

Kyzas

2024

Processes

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Rare earth elements (REEs) are at the forefront of discussions, given their crucial role in cutting-edge and eco-friendly innovations that propel the industrial revolution towards a green economy. These elements have become indispensable to various modern technologies, such as smartphones, electronic devices, and renewable energy sources. Many different concepts and analyses have been introduced, such as the chemical similarities among REEs, health risks and ecological damages, the negative environmental impacts of current recovery processes, and strategies for advancing REE recovery towards a circular economy. Although these elements have been widely used in various applications over the last 20 years, the literature on these aspects is fragmented and spread across different research areas, shared by multiple branches and application fields. These fields include safety concerns, economic challenges, and technology. Summarizing and classifying this literature is challenging due to its fragmented nature, the variety of topics, and the different approaches used. The quest for cleaner recycling strategies necessitates a comprehensive assessment covering economic, technological, and environmental aspects. The primary goal of this review is to provide a holistic perspective on REEs, with a central focus on their economic, technological, and environmental dimensions, particularly emphasizing reuse, recycling, and occupational safety. The review begins by addressing complexities of REEs, highlighting the associated technologies, environmental concerns, and economic considerations. It further explores the aspects of reuse and recycling of REEs, shedding light on the advantages, drawbacks, hazards, and costs associated with recycling technologies for REE recovery. Additionally, the review summarizes occupational exposure and safety considerations related to REEs.

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Rationally designed dipicolinate-functionalized silica for highly efficient recovery of rare-earth elements from e-waste

Cited by 21 publications

References 33 publications

Synthesis and Characterization of Poly(pyrrole-1-carboxylic acid) for Preconcentration and Determination of Rare Earth Elements and Heavy Metals in Water Matrices

Synthesis and Characterization of Poly(pyrrole-1-carboxylic acid) for Preconcentration and Determination of Rare Earth Elements and Heavy Metals in Water Matrices

Synthesis of a New Phosphonate-Based Sorbent and Characterization of Its Interactions with Lanthanum (III) and Terbium (III)

Review of Methods for Obtaining Rare Earth Elements from Recycling and Their Impact on the Environment and Human Health

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