Removal of aqueous rare earth elements (REEs) using nano-iron based materials

Yeşiller, Semira Ünal; Eroğlu, Ahmet E.; Shahwan, Talal

doi:10.1016/j.jiec.2012.11.005

Cited by 60 publications

(20 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent decades, geochemical processes controlling metal migration and deposition in the earth's surface environment has been intensively and increasingly attracting much interest of scientists [7][8][9]. Rare earth is used in many industrial activities including mining and refining, which can cause environmental consequences if not properly managed.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Rare Earth Elements (REEs) onto Activated Carbon Modified with Potassium Permanganate (KMnO4)

Kano¹,

Pang²,

Deng³

et al. 2017

J. Appl. Sol. Chem. Model.

View full text Add to dashboard Cite

The adsorption capacity of activated carbon modified with potassium permanganate (KMnO4) for rare earth elements (REEs) from aqueous solution was investigated. The modified activated carbon was characterized by SEM (scanning electron microscopy), FT-IR (Fourier transform infrared spectrometer), and N2 adsorption-desorption tests. Adsorption experiments from aqueous solutions containing known amounts of some REEs (i.e. La, Lu, Yb, Eu, Y, Sc) onto the carbon were explored in a batch system. The amount of REEs adsorbed at different pH values, initial concentrations, and contact times were determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES) in order to determine the optimum conditions for REEs adsorption. The adsorption of REEs on the activated carbon was well fitted by the Langmuir isothermal adsorption equation. The rates of adsorption were found to conform to pseudo-second order kinetic. These results present the modified activated carbon as an efficient adsorbent for REEs, hence creating new avenues for the treatment of industrial waste waters including pollutants. It is very significant information from the viewpoint of environmental protection.

show abstract

Section: Introductionmentioning

confidence: 99%

Adsorption of Rare Earth Elements (REEs) onto Activated Carbon Modified with Potassium Permanganate (KMnO4)

Kano¹,

Pang²,

Deng³

et al. 2017

J. Appl. Sol. Chem. Model.

View full text Add to dashboard Cite

show abstract

“…It is commonly used as a photographic filter, and due to its resilience it is useful as a metallurgical additive and in nuclear technology as nuclear poison, as neutron-absorbing control rods [3]. Anthropogenic activities may thus end up with REE metals in the hydrosphere and eventually in the food cycle and biosystem [4]. Therefore, the isolation of these elements from the environment is an important preventive measure against harmful exposure.…”

mentioning

confidence: 99%

Sorption of rare-earth erbium from aqueous solution onto sol-gel-derived zirconia

Salem

Yakout

2016

Hem Ind

View full text Add to dashboard Cite

Zirconia powder was synthesized via sol gel method and used for erbium sorption. The adsorption is strongly dependent on pH of the medium where the removal efficiency increases as the pH turns to alkaline range. The process was very fast initially and maximum adsorption was attained within 60 min of contact. Pseudo-second-order model and homogeneous particle diffusion model (HPDM) was found to be the best to correlate the diffusion of erbium into zirconia particles. Adsorption thermodynamic parameters were calculated. Erbium adsorption is an endothermic (ΔH > 0) and good affinity of erbium ions towards the zirconia (ΔS > 0).

show abstract

“…[8][9][10][11][12] Ln are present in natural objects in small quantities, so often the preliminary treatment of samples is applied for their determination, which in particular includes preconcentration, separation, and exclusion. [13][14][15][16] The sufficient number of highly sensitive and selective methods of analysis for the detection and quantitative determination of Ln is not available. Among the available methods the sorption should be highlighted due to its simplicity, high efficiency, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration of Lutetium from Aqueous Solution by Transcarpathian Clinoptilolite

Stechynska

Vasylechko

Gryshchouk

et al. 2020

ACSi

View full text Add to dashboard Cite

Sorptive properties of Transcarpathian clinoptilolite towards trace amounts of Lu(III) were studied under dynamic conditions. It is shown that this lanthanide is sorbed from the weakly alkaline solution (рН 10) most efficiently. The sorption capacity of clinoptilolite under the optimal conditions is equal to 9.37 mg g-1. The distribution of various species of Lu(III) in aqueous solutions at various total concentration of the lanthanide in the pH range from 4 to 13 was calculated. The best desorbent of Lu(III) is the 1 mol L-1 solution of NaCl, preacidified with the solution of HCl to a value of рН 4.0. This desorbent enables 95-100% of Lu(ІІІ) removal. The method of Lu(III) trace amounts preconcentration from aqueous samples in a solid phase extraction mode with the further determination of this rare earth element via the spectrophotometric method using arsenazo III was developed. The linearity of the proposed method was observed in the range of 1-12 ng mL-1 with the detection limit of 0.4 ng mL-1 .

show abstract

Removal of aqueous rare earth elements (REEs) using nano-iron based materials

Cited by 60 publications

References 23 publications

Adsorption of Rare Earth Elements (REEs) onto Activated Carbon Modified with Potassium Permanganate (KMnO4)

Adsorption of Rare Earth Elements (REEs) onto Activated Carbon Modified with Potassium Permanganate (KMnO4)

Sorption of rare-earth erbium from aqueous solution onto sol-gel-derived zirconia

Preconcentration of Lutetium from Aqueous Solution by Transcarpathian Clinoptilolite

Contact Info

Product

Resources

About