Published July 2024 | Version v1
Report Restricted

Development of zeolite column adsorption dynamics simulation code (ZAC)

Creators

  • 1. Japan Atomic Energy Agency, Sector of Fukushima Research and Development, Fukushima Research Institute, Collaborative Laboratories for Advanced Decommissioning Science, Radioactive Material Management Research Division, Tokai, Ibaraki (Japan)
  • 2. Visible Information Center, Inc., Tokai, Ibaraki (Japan)
  • 3. Japan Atomic Energy Agency, Nuclear Science and Engineering Center, Nuclear Science and Reactor Engineering Division, Tokai, Ibaraki (Japan)
  • 4. Japan Atomic Energy Agency, Nuclear Science and Engineering Center, Fuels and Materials Engineering Division, Tokai, Ibaraki (Japan)
  • 5. Nuclear Engineering Co., Ltd., Tokai, Ibaraki (Japan)

Description

Adsorption columns filled with zeolite are used to treat contaminated water containing radioactive cesium generated by the Fukushima Daiichi Nuclear Power Station accident. As the contaminated water treatment progresses, the radioactive cesium in the adsorption column becomes highly concentrated, and the adsorption column becomes a high radiation source. To evaluate the radiation effects such as decay heat and radiolytic hydrogen production in the adsorption column, the concentration of radioactive cesium in the adsorption column is necessary, but since it is difficult to evaluate the concentration by measurement, it is estimated by simulation. In this research, a zeolite column adsorption dynamics simulation (Zeolite Adsorption Column:ZAC) code was developed to calculate the concentration of radioactive materials such as radioactive cesium in a zeolite-filled adsorption column when they are injected into the column. The code was validated through comparison of calculation results with existing codes and experimental results of small column tests. This report presents the details of the model, the handling of the code, and the validity of the results for the developed code. A CD-ROM is attached as an appendix. (J.P.N.)

Availability note (English)

Also available from JAEA; DOI: https://doi.org/10.11484/jaea-data-code-2024-002

Abstract (Japanese)

福島第一原子力発電所事故で発生した放射性セシウムを含む汚染水処理にゼオライトを充填した吸着塔が使用されている。汚染水処理が進むにつれて吸着塔内の放射性セシウムは高濃度となり、吸着塔は高い放射線源となる。吸着塔内の崩壊熱や水素発生量を評価するには、吸着塔内の放射性セシウム濃度が必要となるが、測定では評価することが容易ではないためシミュレーションによって推定される。本研究では、ゼオライトを充填した吸着塔(カラム)に放射性セシウムなどの放射性物質を注入したときの吸着塔内の濃度を算出できるゼオライトカラム吸着挙動解析(ZAC)コードを開発した。本コードの妥当性は、既存コードによる計算結果との比較および小カラム試験の実験結果との比較により確認した。本稿は開発したコードに関するモデルの詳細、コードの取扱い方および結果の妥当性を提示するものである。(著者)

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Additional details

Additional titles

Original title (Japanese)
ゼオライトカラム吸着挙動解析コードZACの開発

Identifiers

DOI
10.11484/jaea-data-code-2024-002;

Publishing Information

Imprint Title
Development of zeolite column adsorption dynamics simulation code (ZAC)
Imprint Pagination
72 p.
Report number
JAEA-Data/Code--2024-002

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
56006798
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
ADSORPTION; AFTER-HEAT; CESIUM ISOTOPES; COMPARATIVE EVALUATIONS; DECONTAMINATION; EXTRACTION COLUMNS; HYDROGEN PRODUCTION; MELTDOWN; NUCLEAR POWER PLANTS; RADIOACTIVE WASTE PROCESSING; RADIOLYSIS; WATER TREATMENT; Z CODES; ZEOLITES
Descriptors DEC
ACCIDENTS; BEYOND-DESIGN-BASIS ACCIDENTS; CHEMICAL RADIATION EFFECTS; CHEMICAL REACTIONS; CLEANING; COMPUTER CODES; DECOMPOSITION; EQUIPMENT; EVALUATION; EXTRACTION APPARATUSES; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; ISOTOPES; MANAGEMENT; MATERIALS; MINERALS; NUCLEAR FACILITIES; POWER PLANTS; PROCESSING; RADIATION EFFECTS; RADIOACTIVE WASTE MANAGEMENT; REACTOR ACCIDENTS; SEPARATION EQUIPMENT; SEVERE ACCIDENTS; SILICATE MINERALS; SORPTION; THERMAL POWER PLANTS; WASTE MANAGEMENT; WASTE PROCESSING

Optional Information

Notes
8 refs., 35 figs., 25 tabs.