Treatment of radioactive ionic exchange resins by super- and sub-critical water oxidation (SCWO)

Kim, Kyeongsook; Son, Soon Hwan; Kim, KwangSin; Han, Joo Hee; Han, Kee Do; Hoe, Seung

doi:10.1016/j.nucengdes.2010.06.018

Cited by 26 publications

(8 citation statements)

References 5 publications

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“…However, secondary waste will be produced in these processes. The wet oxidation can deal with these problems, such as supercritical water oxidation (SCWO) [18], plasma technology [19] and Fenton-like oxidation [1,3]. The first two have high requirements for the facility materials and the treatment cost is also high.…”

Section: Introductionmentioning

confidence: 99%

Treatment of spent radioactive anionic exchange resins using Fenton-like oxidation process

Wan

Wang

2016

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Treatment of spent radioactive anionic exchange resins using Fenton-like oxidation process

Wan

Wang

2016

Chemical Engineering Journal

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“…Removal of major radionuclides from the spent resin to lower the radioactivity level reduces the disposal cost of waste, but the volume of waste is still huge. The most abundant element in the spent resin is carbon, accounting for approximately 48 wt% 13 . The carbon can be recycled by removing major radionuclides.…”

Section: Introductionmentioning

confidence: 99%

Feasibility study of synthesizing graphene quantum dots from the spent resin in a nuclear power plant to reduce disposal cost

Yoon

Choi

Byun

et al. 2022

Intl J of Energy Research

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Summary The feasibility of synthesizing graphene quantum dots from spent resin in a nuclear power plant that was subject to decommissioning was experimentally analyzed, and the resulting reduction in disposal cost was estimated. Owing to radiation safety and regulatory issues, graphene quantum dots were synthesized using an uncontaminated ion‐exchange resin, IRN150 H/OH, prior to its use in a nuclear power plant. The synthesis of graphene quantum dots was attempted, and the characteristics were analyzed using atomic force microscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. The characterization of synthesized graphene quantum dots showed it was possible to recycle the spent resin into graphene quantum dots. Considering the amount of spent resin at the Wolsong Nuclear Power Plant, it is estimated that 3932 drums of ILW reduce to 1636 drums of LLW and 786 drums of EW, and the disposal cost reduces by 42 310 612 USD, indicating the reduction of 79%.

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“…(5), as Eqs. (10) and (11). Thus, Cu 21 can produce more alkane radicals taking part in the oxidation reaction, and accelerate the process of degradation of organics.…”

Section: Introductionmentioning

confidence: 99%

“…Fe 31 1Cu 1 ! Fe 21 1Cu 21 (11) The treatment of spent resins with Fenton process was studied in 1980s. The combination of Fe (II/III) and Cu (II) was used as an effective catalyst for oxidation of the mixture of cation and anion resins in Institute of Nuclear Power in Japan [14].…”

Section: Introductionmentioning

confidence: 99%

“…However, the solidified waste forms have high volume and weight which can be a problem for transportation, storage, and management. The indirect methods include incineration , pyrolysis , Fenton or Fenton‐like oxidation , supercritical water oxidation (SCWO) , plasma technology , and so on. Compared with direct methods, indirect methods lead to high volume reduction factor (VRF), and weight loss percentage.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of spent radioactive resins degradation by Fenton‐like oxidation using response surface methodology

Wan

Wang

2016

Env Prog and Sustain Energy

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The degradation of spent radioactive resin by Fenton‐like process with Cu2+ as catalyst was optimized using response surface methodology (RSM) based on Box–Behnken design (BBD) method. The influence of three independent variables like catalyst concentration, H2O2 dosage, and initial pH value on resin degradation was investigated. The weight loss percentage of resin was evaluated using the quadratic model. Analysis of variance showed that correlation coefficient (R2) of the model was 0.9786, providing a satisfactory approximation of quadratic model with the experimental data. Out of three factors, especially pH value had significant influence on the weight loss percentage of resin. The weight loss percentage increased as pH decreased from 2.25 to 0.75. The conditions for resin degradation were optimized as follows: pH = 0.75, H2O2 = 20 mL, and catalyst concentration was 0.25 M. The confirmation experiment carried out at optimal conditions using RSM. The weight loss percentage was 95.80%. The predicted weight loss percentage was 96.19%, indicating that RSM based on BBD was a reliable method to optimize the operational conditions for resin degradation by Fenton‐like process. Finally, the intermediates of resin degradation were analyzed by ion chromatograph and GC‐MS. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 1590–1596, 2016

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Treatment of radioactive ionic exchange resins by super- and sub-critical water oxidation (SCWO)

Cited by 26 publications

References 5 publications

Treatment of spent radioactive anionic exchange resins using Fenton-like oxidation process

Treatment of spent radioactive anionic exchange resins using Fenton-like oxidation process

Feasibility study of synthesizing graphene quantum dots from the spent resin in a nuclear power plant to reduce disposal cost

Optimization of spent radioactive resins degradation by Fenton‐like oxidation using response surface methodology

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