Evaluation of dithiadiamide-based molecular ion imprinted polymer (MIIP) for selective recovery of platinum from acid-digested spent automobile catalytic converter (ACC) solution

Limjuco, Lawrence A.; Burnea, Francis Kirby B.

doi:10.1557/s43579-022-00158-9

Cited by 5 publications

(5 citation statements)

References 24 publications

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“…This included the C 1s, O 1s, N 1s and P 2p core energy levels. The obtained XPS spectra were deconvoluted, which revealed some signals for each core energy level: C 1s band (C=C sp 2 # -mean value from 3 independent measurements, $ -standard deviation from 3 independent measurements, nr-not registered.…”

Section: Physicochemical Characteristicsmentioning

confidence: 99%

“…The restricted reserve distributions of PGMs influence the limited supply of PGMs from primary resources (above 180 t/year for Pt). These factors cause the great significance of PGMs’ efficient recovery from secondary resources [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…The main chemical operations involved in pretreatment are the following: reduction roasting, oxidative roasting, alloying and sustainable processes from the environmental and economical points of view. It is worth emphasizing that the hydrometallurgical proceeding represents an innovative and promising method for PGM recycling; however, its use in the industry is rather infrequent [ 1 , 2 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Pt(II) and Pt(IV) Adsorption from a Water Solution on Biochar Originating from Honeycomb Biomass

Morlo,

Olchowski,

Dobrowolski

2024

Molecules

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Novel CO2- and H3PO4-modified biochars were successfully synthesized from raw honeycomb biomass. They were characterized via several instrumental techniques. The optimal Pt(II) and Pt(IV) adsorption onto the studied biochars was reached for the initial pH of 1.5 and a contact time of 5 min (Pt(II)) and 24–48 h (Pt(IV)). The highest static adsorption capacities for Pt(II) and Pt(IV) were obtained for the H3PO4-modified biochar: 47 mg g−1 and 35 mg g−1, respectively. The Freundlich model described the Pt(II) adsorption isotherms onto both materials and the Pt(IV) adsorption isotherm onto the CO2-activated material, and the Langmuir model was the best fitted to the Pt(IV) adsorption isotherm onto the H3PO4-activated biochar. The best medium for the quantitative desorption of the Pt form from the H3PO4-modified biochar was 1 mol L−1 thiourea in 1 mol L−1 HCl. The adsorption mechanism of both the studied ions onto the synthesized H3PO4-modified biochar was complex and should be further investigated. The H3PO4-modified biochar was successfully applied for the first time for Pt(IV) removal from a spent automotive catalyst leaching solution.

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Section: Physicochemical Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimization of Pt(II) and Pt(IV) Adsorption from a Water Solution on Biochar Originating from Honeycomb Biomass

Morlo,

Olchowski,

Dobrowolski

2024

Molecules

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“…Different physiochemical methods for PGM separation from the leaching solutions are described in the literature, such as solvent extraction (Costa et al 2013;Paiva et al 2022), ion exchange (Lanaridi et al 2022), molecular recognition technology (Izatt et al 2015) and molecular ion imprinted polymer (Limjuco and Burnea 2022). However, some of those techniques may have drawbacks such as inadequate metal recovery (especially for low concentrations of metals), high energy requirements, as well as high chemical costs and environmental problems.…”

Section: Introductionmentioning

confidence: 99%

Recovery of catalytic metals from leaching solutions of spent automotive catalytic converters using plant extracts

Nobahar

Carlier

Costa

2023

Clean Techn Environ Policy

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This study investigates the potential of hydroalcoholic extracts of Cistus ladanifer L., Erica Andevalensis and Rubus idaeus L. as a green method for the recovery of platinum group metals (PGMs) from both synthetic unimetallic solutions and multimetallic solutions obtained from the leaching of two different spent automotive catalytic converters (SACC). Experiments with unimetallic solutions revealed that E. andevalensis and R. idaeus extracts could separate about 70% of Pd and less than 40% of other tested metals (Al, Ce, Fe and Pt) from the solutions. Then, application of the plant extracts to two different SACCs leachates showed that E. andevalensis and R. idaeus extracts can induce high precipitation (> 60%) of Pd and Pt with co-precipitation of less than 20% of other metals. UV–Visible spectra analysis confirmed the bio-reduction of Pd2+ ions into Pd0 nanoparticles by R. idaeus extract, and Fourier transform infrared spectroscopy (FTIR) analysis revealed the contribution of functional groups of the phytochemicals present in the extract (such as phenols, flavonoids and anthocyanins) in the Pd2+ bio-reduction and stabilization. Afterward, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDX) analysis of the precipitate obtained from one leachate with R. idaeus extract demonstrated the presence of Pd particles along with organic compounds and particles containing other metals. Therefore, particles were subjected to a washing step with acetone for further purification. Finally, scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy (STEM-EDX) analysis showed the high purity of the final Pd particles and high-resolution STEM allowed to determine their size variation of 2.5 to 17 nm with an average Feret size of 6.1 nm and confirmed their crystalline structure with an interplanar lattice distance of ~ 0.22 nm. This green approach offers various benefits including simplicity of Pd separation from the leachates as valuable nanoparticles that makes the process more feasible from economic and environmental standpoints. A process cost of ~ 20 $/g of Pd particles recovered was estimated (excluding manpower). Graphical abstract

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“…Unfortunately, the strategies for Pd isolation are expensive and labor-intensive. 16 Hence, different physiochemical routes have been explored to recover Pd from multi-metal leaching solutions: solvent extraction, 3,18,19 strong basic anionic resin, 20 molecular recognition, 21 solid sorbents 3,[22][23][24][25] and Pd(II) photodeposition.…”

Section: Introductionmentioning

confidence: 99%

Recovery of palladium from waste fashion items through food waste by-products

Cecchi,

Gao,

Clement

et al. 2023

RSC Sustain.

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Evaluation of dithiadiamide-based molecular ion imprinted polymer (MIIP) for selective recovery of platinum from acid-digested spent automobile catalytic converter (ACC) solution

Cited by 5 publications

References 24 publications

Optimization of Pt(II) and Pt(IV) Adsorption from a Water Solution on Biochar Originating from Honeycomb Biomass

Optimization of Pt(II) and Pt(IV) Adsorption from a Water Solution on Biochar Originating from Honeycomb Biomass

Recovery of catalytic metals from leaching solutions of spent automotive catalytic converters using plant extracts

Recovery of palladium from waste fashion items through food waste by-products

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