JP2013103213A - ヨウ素吸着剤、及びヨウ素吸着剤を利用した水処理カラム - Google Patents
ヨウ素吸着剤、及びヨウ素吸着剤を利用した水処理カラム Download PDFInfo
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Abstract
Description
次に、本実施形態のヨウ素吸着剤の製造方法について説明する。但し、以下に説明する製造方法は一例であって、本実施形態のヨウ素吸着剤が得られる限りにおいて特に限定されるものではない。
次に、上述したヨウ素吸着剤を用いた吸着システム及びその使用方法について説明する。
図1に示すように、本装置においては、上述したヨウ素吸着剤が充填された水処理用カラムT1及びT2が並列に配置されるとともに、水処理用カラムT1及びT2の外方には接触効率促進手段X1及びX2が設けられている。接触効率促進手段X1及びX2は、機械攪拌装置又は非接触の磁気攪拌装置とすることができるが、必須の構成要素ではなく省略してもよい。
(実施例1)
シリカゲル(平均粒径210μm)5gにγ−スルファニルプロピルトリメトキシシラン8.7g及びトルエン20mlを加え、9時間環流を行った。その後、得られた溶液をろ過することにより、チオール基で修飾されたシリカ担体を得た。このシリカ担体を洗浄した後、シリカ担体の0.5gに対して、グルコノ-γ-ラクトン0.5g及びメタノール10mlを加え、6時間環流した。反応後、溶液をろ過し、得られたろ過物を水洗浄することにより、チオール基とグルコノ-γ-ラクトンとの反応物由来の硫黄及びポリオール基を含む官能基で修飾された白色〜黄色のシリカ担体を得た。
グルコノ-γ-ラクトンからL-マンノノ-1,4-ラクトンに代えた以外は実施例1と同様にしてヨウ素吸着剤を得た。
グルコノ-γ-ラクトンからD-リキソノ-1,4-ラクトンに代えたこと以外は実施例1と同様にしてヨウ素吸着剤を得た。
カップリング剤をγ−スルファニルプロピルトリメトキシシランから、γ−スルファニルプロピルメチルジメトキシシランに代えたこと以外は実施例1と同様にしてヨウ素吸着剤を得た。
カップリング剤をγ−スルファニルプロピルトリメトキシシランから、γ−スルファニルプロピルトリエトキシシランに代えたこと以外は実施例1と同様にしてヨウ素吸着剤を得た。
担体をシリカゲルからアルミナに代えたこと以外は実施例1と同様にしてヨウ素吸着剤を得た。
担体をシリカゲルからジルコニアに代えたこと以外は実施例1と同様にしてヨウ素吸着剤を得た。
担体をシリカゲルからチタニアに代えたこと以外は実施例1と同様にしてヨウ素吸着剤を得た。
担体をシリカゲルからアクリル樹脂に代え、γ−スルファニルプロピルトリメトキシシランから2−アミノエタンチオールに代えたこと以外は実施例1と同様にしてヨウ素吸着剤を得た。アクリル樹脂の合成およびチオール修飾は次のように合成した。アクリル酸メチル(モノマー)とジビニルベンゼン(架橋剤)とを、塩化ナトリウム及びポリビニルアルコール(分散剤)の存在下でアゾビスイソブチロニトリルを反応開始剤として水中で懸濁重合を行った。これにより、平均粒径300μmの球状粒子を得た。なお、懸濁重合は水中において、80℃で8時間実施した。反応終了後、エタノール:水=80:20の混合溶媒を用いて24時間室温で洗浄した。テトラヒドロフランに得られた樹脂と2−アミノエタンチオールおよびトリエチルアミンを加え、環流下6時間反応させ、表面にチオール基を有する担体を得た。
担体をシリカゲルからグリシジル基含有アクリル樹脂に代え、γ−スルファニルプロピルトリメトキシシランから2−アミノエタンチオールに代えたこと以外は、実施例1と同様にしてヨウ素吸着剤を得た。アクリル樹脂の合成およびチオール修飾は次のように合成した。グリシジルメタクリレート(モノマー)とジビニルベンゼン(架橋剤)とを、塩化ナトリウム及びポリビニルアルコール(分散剤)の存在下でアゾビスイソブチロニトリルを反応開始剤として水中で懸濁重合を行った。これにより、平均粒径300μmの球状粒子を得た。なお、懸濁重合は水中において、80℃で6時間実施した。反応終了後、エタノール:水=80:20の混合溶媒を用いて24時間室温で洗浄した。
シリカゲルの平均粒径を12μmに代えたこと以外は実施例1と同様にしてヨウ素吸着剤を得た。
ゼオライト(モルデナイト,新東北化学工業)1gに対して、10質量%硝酸銀水溶液20mlを加え、室温で1時間浸漬させた。ろ過後、20mlの純水中で撹拌し、ろ過した後、ろ過物を水で洗浄することによってゼオライトヨウ素吸着剤を得た。
市販の強塩基性イオン交換樹脂であるIRA−458(オルガノ社製)を用いた。
上述のようにして得たヨウ素吸着剤を用いて、吸着性能の試験を行った。
ヨウ化カリウム580mgを1Lメスフラスコに入れ、純水でメスアップして600ppmヨウ化カリウム水溶液を調製した。さらに上記溶液一部に濃度が3.5質量%になるよう塩化ナトリウムを加え、3.5質量%塩化ナトリウム含有600ppmヨウ化カリウム水溶液を調製した。
担持した銀イオンが担体から溶出しないか確認をするため、酸および高塩濃度の水溶液中にヨウ素吸着剤を浸漬し、銀イオンの濃度を測定した。酸には硫酸を用い、塩には飽和硫酸ナトリウムを用いた。また、それぞれのpH値は11及び2とした。それぞれの溶液5mlの中で吸着剤50mgを添加し、撹拌後の水溶液中の銀の有無をTBF比色法により測定した。
ヨウ素吸着剤を100mlのガラス製カラムに充填し、20ppmのヨウ素を含有する試験液を一時間当たり600ml通水した。通水状態は、通水が良好であれば○、不良であれば×で示した。
P1 ポンプ
M1、M2、M3 濃度測定手段
C1 制御手段
W1 排水貯留タンク
L1、L2、L4 排水供給ライン
L3、L5、L6 排水排出ライン
V1、V2、V3、V4、V5 バルブ
X1、X2 接触効率促進手段
Claims (7)
- 前記担体はシリカであることを特徴とする、請求項1又は2に記載のヨウ素吸着剤。
- 前記担体は、チタニア、アルミナ、及びジルコニアからなる群より選ばれる少なくとも一つであることを特徴とする、請求項1又は2に記載のヨウ素吸着剤。
- 前記担体はアクリル樹脂であることを特徴とする、請求項1又は2に記載のヨウ素吸着剤。
- 前記担体の大きさは、平均粒径が100μm以上5mm以下であることを特徴とする、請求項1〜5のいずれか一に記載のヨウ素吸着剤。
- 請求項1〜6のいずれか一に記載のヨウ素吸着剤を充填したことを特徴とする、水処理用カラム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2011250858A JP5766589B2 (ja) | 2011-11-16 | 2011-11-16 | ヨウ素吸着剤、及びヨウ素吸着剤を利用した水処理カラム |
US13/677,015 US9149786B2 (en) | 2011-11-16 | 2012-11-14 | Iodine adsorbent and column for water treatment using iodine adsorbent |
CN201210459258.9A CN103111261B (zh) | 2011-11-16 | 2012-11-15 | 碘吸附剂以及使用碘吸附剂的水处理柱 |
FR1260930A FR2982605B1 (fr) | 2011-11-16 | 2012-11-16 | Adsorbant d'iode et colonne pour le traitement des eaux utilisant l'adsorbant d'iode |
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JP2011250858A JP5766589B2 (ja) | 2011-11-16 | 2011-11-16 | ヨウ素吸着剤、及びヨウ素吸着剤を利用した水処理カラム |
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JP5766589B2 JP5766589B2 (ja) | 2015-08-19 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014121702A (ja) * | 2012-11-20 | 2014-07-03 | Toshiba Corp | ヨウ素吸着剤、水処理用タンク、及びヨウ素化合物処理システム |
JP2015160171A (ja) * | 2014-02-27 | 2015-09-07 | 株式会社東芝 | ヨウ素吸着剤、ヨウ素吸着剤の製造方法、水処理用タンク、及びヨウ素吸着システム |
JP2015178052A (ja) * | 2014-03-18 | 2015-10-08 | 株式会社東芝 | ヨウ素吸着剤、ヨウ素吸着剤の製造方法、水処理用タンク、及びヨウ素吸着システム |
CN105289501A (zh) * | 2014-07-24 | 2016-02-03 | 株式会社东芝 | 碘吸附剂、水处理用罐及碘吸附系统 |
JP2017124380A (ja) * | 2016-01-15 | 2017-07-20 | 富士チタン工業株式会社 | オキソ酸イオン吸着剤 |
EP4264638A4 (en) * | 2020-12-18 | 2024-04-10 | The Catholic University Of America | METHOD FOR REMOVING IODATE FROM AQUEOUS SOLUTIONS |
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JP2015058384A (ja) * | 2013-09-18 | 2015-03-30 | 株式会社東芝 | 陰イオン吸着剤、水処理タンク、及び水処理システム |
EP2887359B1 (de) * | 2013-12-20 | 2018-01-31 | GNS Gesellschaft für Nuklear-Service mbH | Verfahren zur Trocknung von Transport- und/oder Lagerbehältern für radioaktive Abfälle |
EP3270384B1 (en) * | 2015-03-12 | 2021-08-04 | Rasa Industries, Ltd. | Filtration material for filtered venting, use thereof and filtered venting device containing the same |
CN110482641B (zh) * | 2019-07-19 | 2022-02-11 | 南华大学 | 一种银附载多孔陶粒吸附材料在处理低浓度碘废水中的应用 |
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JP2015178052A (ja) * | 2014-03-18 | 2015-10-08 | 株式会社東芝 | ヨウ素吸着剤、ヨウ素吸着剤の製造方法、水処理用タンク、及びヨウ素吸着システム |
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EP4264638A4 (en) * | 2020-12-18 | 2024-04-10 | The Catholic University Of America | METHOD FOR REMOVING IODATE FROM AQUEOUS SOLUTIONS |
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CN103111261B (zh) | 2015-10-07 |
US20130118968A1 (en) | 2013-05-16 |
FR2982605A1 (fr) | 2013-05-17 |
JP5766589B2 (ja) | 2015-08-19 |
FR2982605B1 (fr) | 2015-05-15 |
CN103111261A (zh) | 2013-05-22 |
US9149786B2 (en) | 2015-10-06 |
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