JPS6361998A - Manufacture of nuclear fuel element adsorbent for uranium, thorium, etc. using persimmon tannin as raw material - Google Patents
Manufacture of nuclear fuel element adsorbent for uranium, thorium, etc. using persimmon tannin as raw materialInfo
- Publication number
- JPS6361998A JPS6361998A JP61208780A JP20878086A JPS6361998A JP S6361998 A JPS6361998 A JP S6361998A JP 61208780 A JP61208780 A JP 61208780A JP 20878086 A JP20878086 A JP 20878086A JP S6361998 A JPS6361998 A JP S6361998A
- Authority
- JP
- Japan
- Prior art keywords
- uranium
- nuclear fuel
- thorium
- adsorbent
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052770 Uranium Inorganic materials 0.000 title claims description 30
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims description 28
- 239000003463 adsorbent Substances 0.000 title claims description 23
- 235000011511 Diospyros Nutrition 0.000 title claims description 16
- 244000236655 Diospyros kaki Species 0.000 title claims description 15
- 239000003758 nuclear fuel Substances 0.000 title claims description 11
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 title claims description 9
- 229910052776 Thorium Inorganic materials 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 235000018553 tannin Nutrition 0.000 title claims description 4
- 229920001864 tannin Polymers 0.000 title claims description 4
- 239000001648 tannin Substances 0.000 title claims description 4
- 239000002994 raw material Substances 0.000 title description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001744 Polyaldehyde Polymers 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 description 19
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229940015043 glyoxal Drugs 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000013824 polyphenols Nutrition 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 244000055850 Diospyros virginiana Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 150000001224 Uranium Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- SFZULDYEOVSIKM-UHFFFAOYSA-N chembl321317 Chemical compound C1=CC(C(=N)NO)=CC=C1C1=CC=C(C=2C=CC(=CC=2)C(=N)NO)O1 SFZULDYEOVSIKM-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- HVQAJTFOCKOKIN-UHFFFAOYSA-N flavonol Natural products O1C2=CC=CC=C2C(=O)C(O)=C1C1=CC=CC=C1 HVQAJTFOCKOKIN-UHFFFAOYSA-N 0.000 description 1
- 150000002216 flavonol derivatives Chemical class 0.000 description 1
- 235000011957 flavonols Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 polyphenol compounds Chemical class 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（イ） 産業上の利用分野
この発明は、核燃料製造廃水、鉱山水、海水などの水圏
中に溶存しているウラン、トリウムなどの核燃料元素の
回収、除去に利用するため、柿渋を原料として、新規の
ウラン、トリウム等の核燃料元素吸着剤の製造に係わる
ものである。[Detailed description of the invention] (a) Industrial application field This invention is used for the recovery and removal of nuclear fuel elements such as uranium and thorium dissolved in the hydrosphere such as nuclear fuel manufacturing wastewater, mine water, and seawater. Therefore, it is related to the production of new adsorbents for nuclear fuel elements such as uranium and thorium using persimmon tannin as a raw material.
（０） 従来の技術
従来、ウランの吸着剤としては、含水チタン酸などの無
機系吸着剤、キレート樹脂（アミドキシム系など）なと
の有機系吸着剤があったが、含水チタン酸などの無機系
物質は元来微粒子であるため、これを吸着剤として使用
するときには成型造粒しなければならず、この成型造粒
操作により吸着速度が低下したり、造粒物の機械的強度
が弱くなるなどの欠点があった。また一方、キレート樹
脂などの有機系吸着剤は、比較的吸着能は高いが、吸着
速度が遅く、且つこれらの吸着剤が極めて高価であるた
め、目的金属の回収コストが高くなるなどの難点があっ
た。(0) Conventional technology Traditionally, as adsorbents for uranium, there have been inorganic adsorbents such as hydrous titanic acid and organic adsorbents such as chelate resins (amidoxime type, etc.). Since the system substance is originally fine particles, it must be molded and granulated when used as an adsorbent, and this molding and granulation operation reduces the adsorption rate and weakens the mechanical strength of the granulated product. There were drawbacks such as. On the other hand, organic adsorbents such as chelate resins have relatively high adsorption capacity, but their adsorption speed is slow and these adsorbents are extremely expensive, so they have drawbacks such as high recovery costs for the target metal. there were.
（ハ） 発明が解決しようとする間３点この発明は、天
然生物資源の一つで、安価に人手できる柿渋を原料とし
て、ウラン、トリウムなどの核燃料元素に対して優れた
吸着能をもち、且つ吸着速度の速い吸着剤を、安価、且
つ簡単な製造法で得ることを目的とする。(c) Three points that the invention attempts to solve: This invention uses persimmon juice, which is one of the natural biological resources and can be made by hand at low cost, as a raw material, and has excellent adsorption ability for nuclear fuel elements such as uranium and thorium. The purpose of the present invention is to obtain an adsorbent with a high adsorption rate at a low cost and by a simple manufacturing method.
（ニ） 問題点を解決するための手段柿渋は通常液状
または粉末状で人手できるが、柿渋は水に極めて溶けや
すいので、このままの形態ではウランなどの核燃料元素
の吸着剤として使用することができない、よって、実施
例に示したように、柿渋をグルタルアルデヒド、グリオ
キサールなどのポリアルデヒド、または硫酸などの鉱酸
と作用させることにより、水に不溶性のゲル状吸着剤を
製造する。(d) Measures to solve the problem: Persimmon juice can usually be made manually in liquid or powder form, but since persimmon juice is extremely soluble in water, it cannot be used in its current form as an adsorbent for nuclear fuel elements such as uranium. Therefore, as shown in Examples, a water-insoluble gel adsorbent is produced by reacting persimmon juice with a polyaldehyde such as glutaraldehyde or glyoxal, or a mineral acid such as sulfuric acid.
（ネ） 作用
得られた柿渋系吸着剤は極めて優れたウラン吸着能を示
し、この物質は、１部当たりに１．３７ｇのウランを吸
着することができる。このウラン吸着値は、現在までに
公表されたウラン吸着剤のなかで最高の値を示す、この
ように、本物質が極めて高いウラン吸着能を示すのは、
柿渋中に′はタンニン、フラボノールなどのポリフェノ
ール系化合物が著量存在し、これらの化合物がもってい
る多数のポリフェノール性水酸基がウランとキレート化
金物を形成するためと考えられる。また、柿渋をゲル化
することにより、ウラン吸着官能基であるポリフェノー
ル性水酸基がウランと配位しやすい立体構造をつくり、
且つこのゲルは極めて強い親水性物質であるため、本物
質は極めて優れたウラン吸着能を示すものと考えられる
。(f) Effect The obtained persimmon astringent adsorbent exhibits extremely excellent uranium adsorption ability, and this substance can adsorb 1.37 g of uranium per part. This uranium adsorption value is the highest of any uranium adsorbent published to date.The reason why this material exhibits extremely high uranium adsorption ability is as follows.
This is thought to be due to the presence of significant amounts of polyphenol compounds such as tannins and flavonols in persimmon juice, and the large number of polyphenolic hydroxyl groups possessed by these compounds form chelated metals with uranium. In addition, by gelling persimmon juice, a 3D structure is created in which the polyphenolic hydroxyl group, which is a uranium adsorption functional group, can easily coordinate with uranium.
Moreover, since this gel is an extremely hydrophilic substance, it is thought that this substance exhibits extremely excellent uranium adsorption ability.
また、この柿渋系吸着剤は次のような優れた吸着特性を
もっている。Furthermore, this persimmon astringent adsorbent has the following excellent adsorption properties.
（１）本物質のウラン吸着速度は極めて速く、２−４時
閏で吸着平衡に達する。（２）本物質に吸着されたウラ
ンは０．０１ Ｎの極めて薄い酸で容易に脱着すること
ができる。（３）本物質はウランの吸着能の劣化は認め
られず、吸脱着操作を繰り返し行なうことができるｅ
（４） Ｍｎ、 Ｃｏ、 Ｎｉ、 Ｚｎ。(1) The uranium adsorption rate of this substance is extremely fast, reaching adsorption equilibrium in 2-4 hours. (2) Uranium adsorbed on this material can be easily desorbed with extremely dilute 0.01 N acid. (3) This material shows no deterioration in its uranium adsorption ability and can be repeatedly adsorbed and desorbed.
(4) Mn, Co, Ni, Zn.
Ｃｕ、 Ｃｄ、 Ｕを含む混合溶液からの金属イオンの
吸着量は Ｕ＞＞ （ｕ＞他金属の順になり、本物質は
ウランに対して高い選択吸着能を示す。 （５）本物質
は、また、実施例にも示したように、トリウムに対して
も高い吸着能を示す。The adsorption amount of metal ions from a mixed solution containing Cu, Cd, and U is in the following order: U>>(u>other metals, and this material exhibits a high selective adsorption ability for uranium. (5) This material has a high selective adsorption ability for uranium. Furthermore, as shown in the examples, it also exhibits high adsorption capacity for thorium.
（本） 実施例
（実施例１）
液状柿渋（ポリフェノール含量４．０＄）８部に、２５
χゲルタ一ルアルデヒド水溶液２部を加え、１２時間放
置しゲル化させ、柿渋系吸着剤を得た。得られた吸着剤
５．０ ｔｓｇを、１０ ｐｐｍウラン溶液（ｐＨ６）
２００ ｍｌに１時閉攪拌しながら接触させることに
より、１００ ％のウランを回収することができた。(Book) Example (Example 1) To 8 parts of liquid persimmon astringent (polyphenol content 4.0 $), 25
Two parts of χ geltalaldehyde aqueous solution was added, and the mixture was allowed to stand for 12 hours to form a gel, thereby obtaining a persimmon astringent adsorbent. 5.0 tsg of the obtained adsorbent was added to a 10 ppm uranium solution (pH 6).
100% of uranium could be recovered by contacting with 200 ml for 1 hour while stirring while closed.
また、本吸着剤２５ｍｇを、４６ρｐ−のウランを含む
廃水５００ ｍｌ （ｐＨ８）に１時間接触させること
により、９７ Ｘのウランを回収することができた。ま
た、この吸着剤１３．８ ｌａｇを、４ ｘ １０−”
Ｍ ）リウム溶液（ｐＨ３） １００ Ｉ＋に１時間接
触させることにより９５ Ｘのトリウムを回収すること
ができた。Further, by contacting 25 mg of this adsorbent with 500 ml of waste water (pH 8) containing 46 ρp- of uranium for 1 hour, 97 X of uranium could be recovered. In addition, 13.8 lag of this adsorbent was added to 4 x 10-”
M) By contacting with 100 I+ of lithium solution (pH 3) for 1 hour, 95X of thorium could be recovered.
（実施例２）
実施例１で使用した液状柿渋１００１を、６ＮＨ２ＳＯ
４１Ｌに加え一夜放置後濾過、水洗して吸着剤を得た。(Example 2) Liquid persimmon astringent 1001 used in Example 1 was mixed with 6NH2SO
The adsorbent was obtained by adding 41 L of the adsorbent to 41 L and leaving it overnight, then filtering and washing with water.
この吸着剤１．８ ｍｇを、１０ ｐｐｍのウラン溶液
（ｐＨ６） １００ ｍｌに１時間接触させることによ
り９１ Ｘのウランを回収することができた。By contacting 1.8 mg of this adsorbent with 100 ml of a 10 ppm uranium solution (pH 6) for 1 hour, 91X uranium could be recovered.
（実施例３）
液状柿渋９部に、４０ Ｘグリオキサール溶液１部を加
え、１２時間放置することによりゲル状柿渋系吸着剤を
得た。(Example 3) 1 part of 40X glyoxal solution was added to 9 parts of liquid persimmon astringent, and the mixture was left to stand for 12 hours to obtain a gel-like persimmon astringent adsorbent.
（ト） 発明の効果
この物質は、上述のように、ウラン、トリウムなどの核
燃料元素に対して極めて高い吸着能を示し、安価で、且
つ簡単な操作で製造することができ、本物質は、また、
物理的性質も優れているので、カラム法、バッチ法のい
ずれの方法によっても、核燃料精錬廃水、核燃料加工廃
水、鉱山水、リン酸液、海水などに含まれているウラン
、トリウムなどの核燃料元素を効率よく回収、除去する
ことができる。(g) Effects of the invention As mentioned above, this substance exhibits an extremely high adsorption capacity for nuclear fuel elements such as uranium and thorium, and can be produced at low cost and with simple operations. Also,
Because of its excellent physical properties, it can be used to remove nuclear fuel elements such as uranium and thorium contained in nuclear fuel refining wastewater, nuclear fuel processing wastewater, mine water, phosphoric acid liquid, seawater, etc., using either the column method or the batch method. can be efficiently collected and removed.
Claims (1)
たは、硫酸などの鉱酸を作用させることを特徴とするウ
ラン、トリウムなどの核燃料元素吸着剤の製造方法。A method for producing an adsorbent for nuclear fuel elements such as uranium and thorium, which comprises reacting persimmon tannin with a polyaldehyde such as glutaraldehyde or a mineral acid such as sulfuric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61208780A JPS6361998A (en) | 1986-09-03 | 1986-09-03 | Manufacture of nuclear fuel element adsorbent for uranium, thorium, etc. using persimmon tannin as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61208780A JPS6361998A (en) | 1986-09-03 | 1986-09-03 | Manufacture of nuclear fuel element adsorbent for uranium, thorium, etc. using persimmon tannin as raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6361998A true JPS6361998A (en) | 1988-03-18 |
| JPH0360533B2 JPH0360533B2 (en) | 1991-09-17 |
Family
ID=16561975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61208780A Granted JPS6361998A (en) | 1986-09-03 | 1986-09-03 | Manufacture of nuclear fuel element adsorbent for uranium, thorium, etc. using persimmon tannin as raw material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6361998A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0454028A2 (en) * | 1990-04-25 | 1991-10-30 | Mitsubishi Nuclear Fuel Co. | Waste treatment process for alkaline waste liquid |
-
1986
- 1986-09-03 JP JP61208780A patent/JPS6361998A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0454028A2 (en) * | 1990-04-25 | 1991-10-30 | Mitsubishi Nuclear Fuel Co. | Waste treatment process for alkaline waste liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0360533B2 (en) | 1991-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |