Retardation of hexavalent uranium in muscovite environment: a batch study
-
Zhuoxin Yin
,
Ping Li
Abstract
The sorption of hexavalent uranium on muscovite as a function of pH, background electrolyte, temperature and humic acid (HA) was investigated in detail using batch experiments. The results showed that the uranium sorpiton on muscovite was kinetic fast, the kinetic process was fitted well by pseudo-second-order kinetic model. The sorption of uranium depended strongly on pH while weakly on background electrolyte concentration, indicating that surface complexation dominated the sorption process. The escalation of temperature and humic acid concentration were favorable to uranium sorption on muscovite. The sorption isotherms at pH 6.0 could be described better by Langmuir model than Freundlich or Dubinin-Radushkevich (D-R) model, thermodynamic data indicated that the uranium sorption process on muscovite was spontaneous and endothermic process. The findings in present work can provide important experimental reference for understanding the environmental behavior of uranium in mica-rich terrains.
Acknowledgement
This work was supported by the National Natural Science Foundation of China (U1730245, 21327801); the Fundamental Research Funds for the Central Universities (lzujbky-2017-96).
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©2018 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Production, isolation and characterization of radiochemically pure 163Ho samples for the ECHo-project
- Production, separation and supply prospects of 67Cu with the development of fast neutron sources and photonuclear technology
- Retardation of hexavalent uranium in muscovite environment: a batch study
- Zinc oxide impregnated resin for preconcentration and spectrophotometric determination of uranyl ions in aqueous solutions
- Efficient uptake of perrhenate/pertechnenate from aqueous solutions by the bifunctional anion-exchange resin
- Effect of water chemistry on Eu(III) biosorption by magnetic bioadsorbent
- 99mTc-HYNIC-(Ser)3-LTVPWY peptide bearing tricine as co-ligand for targeting and imaging of HER2 overexpression tumor
- Radiometric measurement of lignite coal and its by-products and assessment of the usability of fly ash as raw materials in Turkey
- Letter to the Editor
- International Consensus Radiochemistry Nomenclature Guidelines
Artikel in diesem Heft
- Frontmatter
- Production, isolation and characterization of radiochemically pure 163Ho samples for the ECHo-project
- Production, separation and supply prospects of 67Cu with the development of fast neutron sources and photonuclear technology
- Retardation of hexavalent uranium in muscovite environment: a batch study
- Zinc oxide impregnated resin for preconcentration and spectrophotometric determination of uranyl ions in aqueous solutions
- Efficient uptake of perrhenate/pertechnenate from aqueous solutions by the bifunctional anion-exchange resin
- Effect of water chemistry on Eu(III) biosorption by magnetic bioadsorbent
- 99mTc-HYNIC-(Ser)3-LTVPWY peptide bearing tricine as co-ligand for targeting and imaging of HER2 overexpression tumor
- Radiometric measurement of lignite coal and its by-products and assessment of the usability of fly ash as raw materials in Turkey
- Letter to the Editor
- International Consensus Radiochemistry Nomenclature Guidelines
