Uranyl peroxide ((UO2)(O2)·4H2O; UO4) precipitation for uranium sequestering: formation and physicochemical characterization

Maengkyo Oh; Keunyoung Lee; Kwang Wook Kim; Richard I. Foster; Chang Ha Lee

doi:10.1007/s10967-022-08299-w

Uranyl peroxide ((UO₂)(O₂)·4H₂O; UO₄) precipitation for uranium sequestering: formation and physicochemical characterization

Maengkyo Oh, Keunyoung Lee, Kwang Wook Kim, Richard I. Foster, Chang Ha Lee

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Applicability of uranium peroxide ((UO₂)(O₂)·4H₂O; UO₄) precipitation to remove uranium from secondary wastewaters, generated as part of a spent uranium catalyst treatment process, has been studied. Precipitation characteristics of UO₄ were evaluated as a function of pH, stirring status, time, and initial uranium concentrations. Optimized conditions were applied to the real uranium wastewater achieving ≥ 99% removal efficiency within 24 h. Dissolved impurities (Si, Sb, Fe) were co-precipitated with UO₄ leading to increased particle sizes and faster precipitation kinetics. Uranium was separated effectively from the wastewater to below the 1 mg L⁻¹ criteria necessary for secondary wastewater discharge.

Original language	English
Pages (from-to)	2495-2501
Number of pages	7
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	331
Issue number	6
DOIs	https://doi.org/10.1007/s10967-022-08299-w
Publication status	Published - 2022 Jun

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea Grant (No. NRF-2017M2A8A5015147) funded by the Ministry of Science and ICT.

Publisher Copyright:
© 2022, Akadémiai Kiadó, Budapest, Hungary.

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Nuclear Energy and Engineering
Radiology Nuclear Medicine and imaging
Pollution
Spectroscopy
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1007/s10967-022-08299-w

Cite this

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title = "Uranyl peroxide ((UO2)(O2)·4H2O; UO4) precipitation for uranium sequestering: formation and physicochemical characterization",

abstract = "Applicability of uranium peroxide ((UO2)(O2)·4H2O; UO4) precipitation to remove uranium from secondary wastewaters, generated as part of a spent uranium catalyst treatment process, has been studied. Precipitation characteristics of UO4 were evaluated as a function of pH, stirring status, time, and initial uranium concentrations. Optimized conditions were applied to the real uranium wastewater achieving ≥ 99% removal efficiency within 24 h. Dissolved impurities (Si, Sb, Fe) were co-precipitated with UO4 leading to increased particle sizes and faster precipitation kinetics. Uranium was separated effectively from the wastewater to below the 1 mg L−1 criteria necessary for secondary wastewater discharge.",

author = "Maengkyo Oh and Keunyoung Lee and Kim, {Kwang Wook} and Foster, {Richard I.} and Lee, {Chang Ha}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea Grant (No. NRF-2017M2A8A5015147) funded by the Ministry of Science and ICT. Publisher Copyright: {\textcopyright} 2022, Akad{\'e}miai Kiad{\'o}, Budapest, Hungary.",

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doi = "10.1007/s10967-022-08299-w",

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AU - Lee, Keunyoung

AU - Kim, Kwang Wook

AU - Foster, Richard I.

AU - Lee, Chang Ha

N1 - Funding Information: This work was supported by the National Research Foundation of Korea Grant (No. NRF-2017M2A8A5015147) funded by the Ministry of Science and ICT. Publisher Copyright: © 2022, Akadémiai Kiadó, Budapest, Hungary.

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