Adsorption of uranium (VI) by a MgAl-DHBDC/LDH composite. Kinetic, mechanistic and thermodynamic studies
Creators
- 1. University of South China, Hengyang (China). Hunan Provincial Key Laboratory of Pollution Control and Resources Technology
- 2. University of South China, Hengyang (China). School of Civil Engineering
Description
A magnesium aluminum bimetallic organic framework derivative (MgAl-DHBDC/LDH composite) was prepared by etching MgAl bimetallic MOF template and used to remove U(VI) in aqueous solution. Compared to MgAl-DHBDC, the stability, dispersibility and removal ratio of U(VI) with MgAl-DHBDC/LDH were improved significantly over a wide pH range. The adsorption of uranium by MgAl-DHBDC/LDH was mainly multilayer physical adsorption, and the adsorption process was a spontaneous endothermic process. Moreover, the removal ratio of U(VI) by the MgAl-DHBDC/LDH composite remained above 90% after 4 cycles, indicating good regeneration performance. The MgAl-DHBDC/LDH composite shows great potential in the remediation of radionuclide uranium wastewater. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 332
- Journal Issue
- 10
- Journal Page Range
- p. 4255-4269
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 54108051
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ADSORPTION; ALUMINIUM; AQUEOUS SOLUTIONS; BIMETALS; MAGNESIUM; MEMBRANES; URANIUM
- Descriptors DEC
- ACTINIDES; ALKALINE EARTH METALS; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; METALS; MIXTURES; SOLUTIONS; SORPTION
Optional Information
- Notes
- 47 refs.