High-selective recovery of palladium by the N-(2-sulfoethyl)chitosan-based sorbent from the Pt(IV)-Pd(II) binary solution in a fixed-bed column

Petrova, Yu. S.; Пестов, А. В.; Kapitanova, E. I.; Usoltseva, Maria K.; Неудачина, Л. К.

doi:10.1016/j.seppur.2018.12.025

Cited by 15 publications

(3 citation statements)

References 43 publications

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“…In many countries, there is a growing need for development of more efficient materials for water treatment and purification technologies (chemical precipitation, flocculation, reverse osmosis, solvent extraction, sorption, membrane processes, exchange of ions, etc. ). − For instance, Humelnicu et al showed that every material which contains donor atoms (N, S, O, P, etc.) could interact with heavy metals; therefore, they could be used as sorbents, the heavy metal sorbed amounts (tens to hundreds mg per gram sorbent) being strongly influenced by accessibility of these atoms, which act as ligands for the central heavy metal ion .…”

Section: Introductionmentioning

confidence: 99%

Removal and Separation of Heavy Metal Ions from Multicomponent Simulated Waters Using Silica/Polyethyleneimine Composite Microparticles

Bucătariu¹,

Ghiorghiță²,

Zaharia³

et al. 2020

ACS Appl. Mater. Interfaces

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Composite solid surfaces with high content of functional groups (FGs) are useful materials in different types of applications requiring stimuli-responsive “hard/soft” architectures, their improved properties rising from the combination of organic–inorganic parts. Among different types of weak polyelectrolytes, poly(ethyleneimine) (PEI) is of great interest in the construction of composite systems with thin layer-by-layer (LbL) organic films due to the large number of amino groups per unit mass of polymer. Herein, the spherical silica microparticles were modified with linear (L) or branched (B) PEI chains using LbL deposition of a copper complex (PEIL–Cu2+ or PEIB–Cu2+) and poly(acrylic acid) (PAA), glutaraldehyde selective cross-linking, followed by copper and PAA extraction from the multilayer. The newly formed silica/(PEIL)10 and silica/(PEIB)10 composites were used in batch and column sorption/desorption experiments of four heavy metal ions (Cu2+, Ni2+, Co2+, and Cd2+). In noncompetitive conditions ([FG]/Σ[M2+] > 9), all heavy metal ions were retained on composites, demonstrating the potential application of the prepared functional microparticles in surface water treatment. However, in competitive conditions ([FG]/Σ[M2+] < 9), only Cu2+ is sorbed in high amount (∼2.5 mmol·g–1 PEI) on composites, with simultaneous displacement of already sorbed ions, demonstrating the solid-phase extraction and chromatographic properties of the synthesized silica/(PEIL) n and silica/(PEIB) n composites.

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Section: Introductionmentioning

confidence: 99%

Removal and Separation of Heavy Metal Ions from Multicomponent Simulated Waters Using Silica/Polyethyleneimine Composite Microparticles

Bucătariu¹,

Ghiorghiță²,

Zaharia³

et al. 2020

ACS Appl. Mater. Interfaces

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“…As one of the significant metals that belong to the platinum group with excellent physical and chemical properties, palladium plays a key role in various fields, − such as electrical technology, biomedicine, energy storage, high catalysis, and other industries. As far as its role in the catalytic industry is concerned, it is known as the “vitamin of modern industry”.…”

Section: Introductionmentioning

confidence: 99%

“…However, there are still problems in precious metal recovery research, such as low recovery rates, poor selectivity, and poor regeneration effects. In recent reports, Petrova et al used an N -(2-sulfoethyl) chitosan-based adsorbent to recover palladium from Pt(IV)–Pd(II) binary solution . Sharififard et al recovered palladium using commercially available activated carbon and biopolymer-modified activated carbon. ,, However, the wide use of these adsorbents in a strong acid medium or under the influence of multiple impurity ions is questionable in detecting whether the recovery efficiency and selectivity of palladium can meet the requirements.…”

Section: Introductionmentioning

confidence: 99%

Highly Selective Adsorption and Recovery of Palladium from Spent Catalyst Wastewater by 1,4,7,10-Tetraazacyclododecane-Modified Mesoporous Silica

Zeng

Liu

Xiao

et al. 2022

ACS Sustainable Chem. Eng.

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A new silicon-based adsorbent with good adsorption performance on Pd(II) was synthesized from mesoporous silica as a carrier and 1,4,7,10-tetraazacyclododecane as a functional ligand. The batch method was used to investigate and evaluate the adsorption performance of the adsorbent on Pd(II) in HCl-HNO 3 solution. Influencing factors such as the contact time, pH, temperature, initial Pd(II) concentration, and elution conditions on adsorption and elution were systematically investigated and optimized. Simultaneously, adsorption kinetics, thermodynamics, and adsorption isotherms were investigated. The results revealed that under optimal adsorption conditions, the recovery rate of the adsorbent to Pd(II) could reach 98.30−99.75% in a mixed solution, which was mostly unaffected by other impurity ions. After five adsorption−desorption cycles, the recovery rate of the adsorbent to Pd(II) remained more than 93%. Pd(II) adsorption by the adsorbent was rapid within 30 min, and the recovery rate could reach 85%. In combination with density functional theory calculations, an adequate recovery mechanism was proposed to describe the selective adsorption and desorption process of Pd(II), in which the chemical adsorption dominated. As a result, this material can adsorb and recover Pd(II) with high selectivity, a rapid adsorption rate, good stability, and reusability, making it ideal for recovering waste palladium resources under acidic conditions.

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Effect of the degree of sulfoethylation of polyethylenimine on the selectivity of sorption of palladium(ii) from binary solutions

et al. 2021

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High-selective recovery of palladium by the N-(2-sulfoethyl)chitosan-based sorbent from the Pt(IV)-Pd(II) binary solution in a fixed-bed column

Cited by 15 publications

References 43 publications

Removal and Separation of Heavy Metal Ions from Multicomponent Simulated Waters Using Silica/Polyethyleneimine Composite Microparticles

Removal and Separation of Heavy Metal Ions from Multicomponent Simulated Waters Using Silica/Polyethyleneimine Composite Microparticles

Highly Selective Adsorption and Recovery of Palladium from Spent Catalyst Wastewater by 1,4,7,10-Tetraazacyclododecane-Modified Mesoporous Silica

Effect of the degree of sulfoethylation of polyethylenimine on the selectivity of sorption of palladium(ii) from binary solutions

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