Adsorption and immobilization of radioactive ionic-corrosion-products using magnetic hydroxyapatite and cold-sintering for nuclear waste management applications

Venkatesan, Suriya; Hassan, Muhmood ul; Ryu, Ho Jin

doi:10.1016/j.jnucmat.2018.11.026

Cited by 32 publications

(27 citation statements)

References 49 publications

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“…The authors revealed that under optimum operating conditions (contact time of 120 min, pH of 6, absorbent dosage of 4 g/L), the nanoparticles were able to achieve the Co 2+ absorption rate at 68.95 mg/g. Besides, Venkatesan et al (2019) found that radioactive ion-induced elements that were absorbed by nanoparticles were subject to a relatively slow leaching rate 10 −6 to 10 −7 g/m 2 /day. Jung, Baik, Choi, and Sohn (2019) investigated the mechanical and corrosion characteristics for 0.5% Gd-0.8% B-stainless steel that has been hot-rolled within a nuclear waste simulation solution for nuclear storage.…”

Section: Effect Of Materials Corrosionmentioning

confidence: 99%

“…Venkatesan, Hassan, and Ryu (2019) investigated the techniques (cold‐sintering technique along with magnetic hydroxyapatite (MA‐HAP) nanoparticles) utilized to absorb and immobilize radioactive ionic products produced as a result of corrosion. The authors revealed that under optimum operating conditions (contact time of 120 min, pH of 6, absorbent dosage of 4 g/L), the nanoparticles were able to achieve the Co 2+ absorption rate at 68.95 mg/g.…”

Section: Effect Of Materials Corrosionmentioning

confidence: 99%

10^{‐ 6}

10^{‐ 7}

g/m 2 /day.…”

Section: Effect Of Materials Corrosionmentioning

confidence: 99%

See 2 more Smart Citations

Radioactive waste: A review

Deng

Zhang

Dong

et al. 2020

Water Environment Research

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The reviewed papers presented here provide a general overview of worldwide radioactive waste-related studies conducted in 2019. The current review includes studies related to safety assessments, decommission and decontamination of nuclear facilities, fusion facilities, and transportation. Further, the review highlights radioactive wastewater decontamination, management solutions for the final disposal of low-and highlevel radioactive wastes (LLRW and HLRW), interim storage and final disposal options for spent fuel (SF), and tritiated wastes, with a focus on environmental impacts due to the mobility of radionuclides in the ecosystem, water and soil along with other research progress made in the management of radioactive waste. © 2020 Water Environment Federation • Practitioner points • The release of radionuclides and their subsequent fate and transport in the environment poses public health concern and has stimulated recent research on the waste management techniques. • Seeking a safe and environmental-friendly solution is the current trend for existing and projected inventories of radioactive waste. • Significant progress in the field of geological disposal of radioactive waste has been made in the last two decades.

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Section: Effect Of Materials Corrosionmentioning

confidence: 99%

Section: Effect Of Materials Corrosionmentioning

confidence: 99%

10^{‐ 6}

10^{‐ 7}

g/m 2 /day.…”

Section: Effect Of Materials Corrosionmentioning

confidence: 99%

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Radioactive waste: A review

Deng

Zhang

Dong

et al. 2020

Water Environment Research

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“…In recent years, increasing attention has been paid to the removal of radioactive pollutants from aquatic ecosystems due to their frequent and widespread detection [1,2]. In addition to natural radionuclides, the occurrence of radioactive pollutants has become widely recognized due to their introduction through anthropogenic sources, such as nuclear power plants, weapons, medicine, industrial radiography, studies, accidental releases, and inadequate practices of radioactive waste disposal [3][4][5]. Among the various noxious radionuclides, 137 Cs, 60 Co, 63 Ni, 55 Fe, 90 Sr, 226 Ra, 232 Th, and 238 U were reported as the key artificial radioactive contaminants [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Novel Hydroxyapatite Beads for the Adsorption of Radionuclides from Decommissioned Nuclear Power Plant Sites

et al. 2021

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Although a powdered form of hydroxyapatite (p-HdA) has been studied for the adsorption of heavy metals that contaminate the restoration sites of decommissioned nuclear power plants, most of the studies are limited in the laboratory due to the head loss and post-separation in practical applications. Herein, we fabricated a porous bead form of HdA (b-HdA) as a novel adsorbent for removing radionuclides from aqueous environments via a facile synthesis by mixing the p-HdA precursor and polyvinyl butyral (PVB) as a binder and added a sintering process for the final production of a porous structure. The spherical b-HdA with an approximate diameter of 2.0 mm was successfully fabricated. The effectiveness of the b-HdA at removing Co(II) was investigated via the adsorption equilibrium at various experimental temperatures. The b-HdA exhibited the adsorption capacity for Co(II) ions with a maximum of 7.73 and 11.35 mg/g at 293 K and 313 K, respectively. The experimental kinetic data were well described using a pseudo-second-order kinetic model, and the adsorption mechanisms of Co(II) onto the b-HdA were revealed to be a chemisorption process with intraparticle diffusion being the rate-limiting step. In addition, the competitive adsorption onto the b-HdA with the order of U(VI) > Co(II) > Ni(II) > Sr(II) > Cs(I) was also observed in the multi-radionuclides system. Considering the advantages of the size, applicability to the continuous-flow column, and the easy separation from treated water, the b-HdA can be an excellent absorbent with high potential for practical applications for removing radionuclides.

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“…[52][53][54][55][56][57][58] So far, very few reports have been published on the cold sintering of hydroxyapatite containing powders. [59][60][61] In this study, hybrid nanostructured powders were synthesized using a high-pressure hydrothermal method utilizing hydrogen gas injection to increase the reduction rate of GO. To investigate the final composite properties, a cold sintering method has been used.…”

Section: Introductionmentioning

confidence: 99%