Bentonite colloids immobilization and release in quartz column and its influence on selenite migration

Yao, Li; Guo, Ning; Xian, Dongfan; Zhou, Wanqiang; Shi, Yanling; Wang, Jingyi; Chen, Yawen; Liu, Chunli

doi:10.1016/j.scitotenv.2021.152833

Cited by 8 publications

(1 citation statement)

References 58 publications

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“…The radiotoxic exposure of long-lived radionuclides generated in large quantities during defense related research activities, nuclear power plant operations (NPPs), and decommissioning of nuclear reactors is extremely hazardous to humans as well as the environment. − Among various long-lived radionuclides, technetium-99 ( 99 Tc) can be produced during the irradiation of 235 U-enriched fuel for power production . According to one study, 1 kg of 99 Tc can be produced from 1 ton of nuclear fuel “burned” in a nuclear reactor .…”

Section: Introductionmentioning

confidence: 99%

Design and Application of Materials for Sequestration and Immobilization of ⁹⁹Tc

Singh

Mahzan

Rashid

et al. 2023

Environ. Sci. Technol.

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99Technetium (99Tc) is a hazardous radionuclide that poses a serious environmental threat. The wide variation and complex chemistries of liquid nuclear waste streams containing 99Tc often create unique, site specific challenges when sequestering and immobilizing the waste in a matrix suitable for long-term storage and disposal. Therefore, an effective management plan for 99Tc containing liquid radioactive wastes (such as storage (tanks) and decommissioned wastes) will likely require a variety of suitable materials/matrixes capable of adapting to and addressing these challenges. In this review, we discuss and highlight the key developments for effective removal and immobilization of 99Tc liquid waste in inorganic waste forms. Specifically, we review the synthesis, characterization, and application of materials for the targeted removal of 99Tc from (simulated) waste solutions under various experimental conditions. These materials include (i) layered double hydroxides (LDHs), (ii) metal–organic frameworks (MOFs), (iii) ion-exchange resins (IERs) as well as cationic organic polymers (COPs), (iv) surface modified natural clay materials (SMCMs), and (v) graphene-based materials (GBMs). Second, we discuss some of the major and recent developments toward 99Tc immobilization in (i) glass, (ii) cement, and (iii) iron mineral waste forms. Finally, we present future challenges that need to be addressed for the design, synthesis, and selection of suitable matrixes for the efficient sequestration and immobilization of 99Tc from targeted wastes. The purpose of this review is to inspire research on the design and application of various suitable materials/matrixes for selective removal of 99Tc present globally in different radioactive wastes and its immobilization in stable/durable waste forms.

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Section: Introductionmentioning

confidence: 99%

Design and Application of Materials for Sequestration and Immobilization of ⁹⁹Tc

Singh

Mahzan

Rashid

et al. 2023

Environ. Sci. Technol.

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Influence of bentonite colloids generated at different temperatures on uranium(Ⅵ) sorption and migration

Li,

Zhou

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Removal and recycling of aqueous selenite anions using cobalt-based metal–organic-framework coated on multi-walled carbon nanotubes composite membrane

Xu,

Fan,

et al. 2024

Journal of Colloid and Interface Science

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Bentonite colloids immobilization and release in quartz column and its influence on selenite migration

Cited by 8 publications

References 58 publications

Design and Application of Materials for Sequestration and Immobilization of ⁹⁹Tc

Design and Application of Materials for Sequestration and Immobilization of ⁹⁹Tc

Influence of bentonite colloids generated at different temperatures on uranium(Ⅵ) sorption and migration

Removal and recycling of aqueous selenite anions using cobalt-based metal–organic-framework coated on multi-walled carbon nanotubes composite membrane

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Bentonite colloids immobilization and release in quartz column and its influence on selenite migration

Cited by 8 publications

References 58 publications

Design and Application of Materials for Sequestration and Immobilization of 99Tc

Design and Application of Materials for Sequestration and Immobilization of 99Tc

Influence of bentonite colloids generated at different temperatures on uranium(Ⅵ) sorption and migration

Removal and recycling of aqueous selenite anions using cobalt-based metal–organic-framework coated on multi-walled carbon nanotubes composite membrane

Contact Info

Product

Resources

About

Design and Application of Materials for Sequestration and Immobilization of ⁹⁹Tc

Design and Application of Materials for Sequestration and Immobilization of ⁹⁹Tc