Adsorption of uranium (VI) by a MgAl-DHBDC/LDH composite: kinetic, mechanistic and thermodynamic studies

Li, Shiyou; Wang, Yang; He, Junqin; Qiao, Jishuai; Yang, Yubiao; Xiong, Zhiyu; Wang, Guohua

doi:10.1007/s10967-023-09106-w

Cited by 4 publications

(6 citation statements)

References 47 publications

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Section: Resultsmentioning

confidence: 99%

“…As shown in several studies [27,28], uranium can be desorbed using Na2CO3 (or Na-HCO3) treatment. In this case, there is no destruction of the crystalline structure of the As shown in several studies [27,28], uranium can be desorbed using Na 2 CO 3 (or NaHCO 3 ) treatment. In this case, there is no destruction of the crystalline structure of the sorbent, and desorption itself is carried out due to the exchange of substitution of complex uranium carbonate compounds contained in the interlayer space of the LDH with carbonate ions.…”

Section: Resultsmentioning

confidence: 99%

“…The study [20] showed that at a Na 2 CO 3 concentration of 0.5 mol/L or more, the desorption efficiency is 80%. The authors [27] showed that after four cycles of adsorption-desorption with NaHCO 3 , the removal ratio of uranium by LDH was maintained at 90.27%. The article [28] compares the effectiveness of NaOH, Na 2 CO 3 , and EDTA for the regeneration of adsorbed uranium, and shows that the most effective desorption method is the treatment of Na 2 CO 3.…”

Section: Introductionmentioning

confidence: 99%

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Mesoporous Layered Double Hydroxides: Synthesis for High Effective Uranium Ions Sorption from Seawater and Salt Solutions on Nanocomposite Functional Materials

Balybina,

Dran’kov,

Shichalin

et al. 2023

J. Compos. Sci.

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A series of sorption materials based on layered double hydroxides (Co-Fe LDH, Ni-Fe LDH, and Zn-Ti LDH) were obtained by a facile and environmentally friendly method of coprecipitation. A low particle size of no more than 10 µm was achieved. The use of transition metals makes it possible to obtain compounds that are mechanically and chemically stable in aggressive environments. XRD analysis revealed that the compounds have a highly organized crystalline structure. Using SEM, it was determined that Co-Fe LDH and Ni-Fe LDH had a loose, highly dispersed surface structure, while Zn-Ti LDH had a monolithic surface structure. U(VI) adsorption on the obtained materials in solutions containing Na2CO3, Na2SO4, KNO3, NaCl, K3PO4, and NaHCO3, was studied in batch mode. The degree of purification in the presence of these salts reached 99.9%, while the distribution coefficient Kd reached 105 mL/g. Sorption capacity qmax and equilibrium adsorption constants Kf and KL for U(VI) adsorption in batch mode (for 24 h) from distilled and seawater were determined using the Freundlich and Langmuir equations. The highest sorption capacity of 101.6 mg/g in seawater and 114.1 mg/g in distilled water was registered for Co-Fe-LDH. The presence of competing ions in seawater can reduce sorption efficiency by up to 40%. The provided research allowed us to conclude that the obtained materials, Co-Fe LDH, Ni-Fe LDH, and Zn-Ti LDH are promising for the sorption removal of U(VI) from aqueous media of medium salinity.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mesoporous Layered Double Hydroxides: Synthesis for High Effective Uranium Ions Sorption from Seawater and Salt Solutions on Nanocomposite Functional Materials

Balybina,

Dran’kov,

Shichalin

et al. 2023

J. Compos. Sci.

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“…Se(VI) under pH = 4, the removal rate of U(VI) was 96.64%, and the removal rate remained above 90% after four cycles [39].…”

Section: Heavy Metal Ionsmentioning

confidence: 92%

“…dyes) [20][21][22][23][24][25][26][27], pharmaceuticals or personal care products (PPCPs) [28][29][30][31][32][33][34] and inorganic pollutants (e.g. heavy metal ions) [17,[35][36][37][38][39] by adsorption or photocatalysis. They can also remove organic contaminants through oxidative degradation and incomplete mineralization, named Fenton reaction or Fenton-like reactions and persulfate (PS) oxidativation.…”

Section: Introductionmentioning

confidence: 99%

The use of bimetallic metal–organic frameworks as restoration materials for pollutants removal from water environment

Yuan,

Li,

Zhu

2024

R. Soc. Open Sci.

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Bimetallic metal–organic frameworks (BMOFs) are a class of functional porous materials constructed by coordination between nodes containing two different metal ions and organic ligands. Studies have shown that the catalytic activity of BMOFs is greatly improved owing to the adjustment of charge distribution and the increase of active sites as well as the synergistic effect between the bimetals, and the advantages of their large specific surface area, high porosity, unique structure and dispersed active centres make them available as important organic materials applied in the field of wastewater treatment. In this review, the preparation and construction methods for BMOFs in recent years are summarized, and we focus on their removal of different types of pollutants in the aqueous environment, including ions, dyes, pharmaceuticals or personal care products, phenolic compounds and microorganisms, as well as their corresponding removal mechanisms. In addition, we provide an outlook on their future opportunities and challenges in wastewater treatment.

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Efficient enrichment of uranium (VI) in aqueous solution using magnesium–aluminum layered double hydroxide composite phosphate-modified hydrothermal biochar: Mechanism and adsorption

Chen,

Zhong,

Lin

et al. 2024

Chemosphere

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Adsorption of uranium (VI) by a MgAl-DHBDC/LDH composite: kinetic, mechanistic and thermodynamic studies

Cited by 4 publications

References 47 publications

Mesoporous Layered Double Hydroxides: Synthesis for High Effective Uranium Ions Sorption from Seawater and Salt Solutions on Nanocomposite Functional Materials

Mesoporous Layered Double Hydroxides: Synthesis for High Effective Uranium Ions Sorption from Seawater and Salt Solutions on Nanocomposite Functional Materials

The use of bimetallic metal–organic frameworks as restoration materials for pollutants removal from water environment

Efficient enrichment of uranium (VI) in aqueous solution using magnesium–aluminum layered double hydroxide composite phosphate-modified hydrothermal biochar: Mechanism and adsorption

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