JPH01258737A - Adsorbent for recovery of rare earth element in aqueous solution - Google Patents
Adsorbent for recovery of rare earth element in aqueous solutionInfo
- Publication number
- JPH01258737A JPH01258737A JP63084746A JP8474688A JPH01258737A JP H01258737 A JPH01258737 A JP H01258737A JP 63084746 A JP63084746 A JP 63084746A JP 8474688 A JP8474688 A JP 8474688A JP H01258737 A JPH01258737 A JP H01258737A
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- adsorbent
- earth elements
- fibrous
- aqueous solution
- 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
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 33
- 239000007864 aqueous solution Substances 0.000 title claims description 16
- 239000003463 adsorbent Substances 0.000 title abstract description 13
- 238000011084 recovery Methods 0.000 title abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 11
- 239000011591 potassium Substances 0.000 claims abstract description 11
- 239000013078 crystal Substances 0.000 claims abstract description 8
- 238000010306 acid treatment Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 9
- 239000002253 acid Substances 0.000 abstract description 6
- 239000011521 glass Substances 0.000 abstract description 3
- 238000007598 dipping method Methods 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000005855 radiation Effects 0.000 description 5
- 229910052688 Gadolinium Inorganic materials 0.000 description 4
- 229910052779 Neodymium Inorganic materials 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 239000003456 ion exchange resin Substances 0.000 description 3
- 229920003303 ion-exchange polymer Polymers 0.000 description 3
- 229910052746 lanthanum Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- -1 rare earth acetate Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- IKNAJTLCCWPIQD-UHFFFAOYSA-K cerium(3+);lanthanum(3+);neodymium(3+);oxygen(2-);phosphate Chemical compound [O-2].[La+3].[Ce+3].[Nd+3].[O-]P([O-])([O-])=O IKNAJTLCCWPIQD-UHFFFAOYSA-K 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052590 monazite Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000001637 plasma atomic emission spectroscopy Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は水溶液中の希土類元素の吸着回収材に関する。[Detailed description of the invention] Industrial applications The present invention relates to a material for adsorbing and recovering rare earth elements in an aqueous solution.
モナズ石等の希土類元素原鉱の酸またはアルカリ溶解液
、希土類元素を使用する工場廃液や原子力発電に伴って
出る放射性廃液中に含まれる希土類元素を吸着回収する
のに用いられる。It is used to adsorb and recover rare earth elements contained in acidic or alkaline solutions of raw rare earth element ores such as monazite, factory waste fluids that use rare earth elements, and radioactive waste fluids generated from nuclear power generation.
従来技術
従来、水溶液中の希土類元素を回収するには、主として
有機イオン交換樹脂が使用されてきた。Prior Art Conventionally, organic ion exchange resins have been mainly used to recover rare earth elements from aqueous solutions.
しかし、有機イオン交換樹脂は高温水中及び高い放射線
線量下の水溶液には使用し得なく、また化学的安定性が
低いため、強酸・強アルカリ中では劣化が速く、かつ希
土類元素と他の金属イオンとの吸着性の差が小さい等の
欠点があった。However, organic ion-exchange resins cannot be used in high-temperature water or aqueous solutions under high radiation doses, and because of their low chemical stability, they deteriorate quickly in strong acids and strong alkalis, and are susceptible to rare earth elements and other metal ions. There were drawbacks such as a small difference in adsorption between the two.
発明が解決しようとする課題
本発明は前記の有機イオン交換樹脂の欠点を解消しよう
とするものである。その目的は耐熱性。Problems to be Solved by the Invention The present invention aims to eliminate the drawbacks of the above-mentioned organic ion exchange resins. Its purpose is heat resistance.
耐放射線性、耐酸・耐アルカリ性に優れ、希土類元素に
対して高い選択性と吸着容量を示す水溶液中の希土類元
素を吸着・回収する材料を提供しようとするものである
。The present invention aims to provide a material that adsorbs and recovers rare earth elements in an aqueous solution, which has excellent radiation resistance, acid resistance, and alkali resistance, and exhibits high selectivity and adsorption capacity for rare earth elements.
課題を解決するための手段
本発明者らはさきにニチタン酸カリウム組成割合のＴｉ
０１とＫｚＯの溶融物を急冷することによって繊維状の
ニチタン酸カリウムの結晶を得ることに成功し、これを
酸処理により脱カリウムを行い繊維状チタニャ水和物（
１１，Ｔｉ、ｏ、 ・ｎ１ｌｔＯ）を得ることに成功し
た。Means for Solving the Problems The present inventors first determined the Ti composition ratio of potassium nititanate.
By rapidly cooling the melt of 01 and KzO, we succeeded in obtaining fibrous potassium nititanate crystals, which were depotassiumed by acid treatment to form fibrous titania hydrate (
11,Ti, o, ·n1ltO).
得られた繊維状チタニャ水和物の性質について研究を進
めた結果、水溶液中の希土類元素を選択的に吸着回収し
得られると共に高い吸着能を有し、また耐化学薬品性、
耐放射線性、耐熱性も高く、これらの水溶液にも使用可
能でかつ繊維状であるため、固液分離が容易でカラ１１
法による吸着において目詰りがなく、高能率で吸着処理
し得られることを究明し得た。この知見に基づいて本発
明を完成した。As a result of conducting research on the properties of the obtained fibrous titania hydrate, we found that it can selectively adsorb and recover rare earth elements in aqueous solutions, has high adsorption capacity, and has chemical resistance.
It has high radiation resistance and heat resistance, can be used in these aqueous solutions, and is fibrous, so solid-liquid separation is easy.
It has been found that there is no clogging in adsorption using this method, and that the adsorption process can be performed with high efficiency. The present invention was completed based on this knowledge.
本発明の要旨は、ニチタン酸カリウムの繊維状結晶を酸
処理により脱カリウムして得られる繊維状チタニャ水和
物からなる水溶液中の希土類元素の吸着回収材にある。The gist of the present invention is a material for adsorbing and recovering rare earth elements in an aqueous solution, which is made of fibrous titania hydrate obtained by depotassiuming fibrous crystals of potassium nititanate by acid treatment.
水溶液中の希土類元素の吸着は、該水溶液中に吸着材を
浸漬しても、また、吸着材をガラス管等に充填し、これ
に水溶液を通じてもよい。Rare earth elements in an aqueous solution may be adsorbed by immersing the adsorbent in the aqueous solution, or by filling a glass tube or the like with the adsorbent and passing the aqueous solution through the adsorbent.
希土類元素としては、Ｙ、 Ｌａ、 Ｃｅ、 Ｐｒ、
Ｎｄ、 Ｐｍ。Rare earth elements include Y, La, Ce, Pr,
Nd, Pm.
Ｓｎ＋、 Ｅｕ、 Ｇｄ、 Ｔｂ、 ｌｌｏ、 Ｂｒ、
Ｔｍ、 Ｙｂ、 Ｌｕ＄が挙げられる。Sn+, Eu, Gd, Tb, llo, Br,
Examples include Tm, Yb, and Lu$.
希土類元素を吸着したものから希土類元素を回収するこ
とは、■規定程度の酸水溶液に浸漬することによって容
易に達成できる。この手順はバ・フチ法によってもカラ
ム法によってもよい。Recovering rare earth elements from materials on which rare earth elements have been adsorbed can be easily achieved by immersing the material in an aqueous acid solution of a standard concentration. This procedure may be performed by the Ba-Fuchi method or the column method.
実施例 １゜
（１） 繊維状チタニャ水和物１１□Ｔｉ、０５・ｎ
）１２０の製造炭酸カリウムと二酸化チタンの粉末をモ
ル比で１；２の割合で混合した。この混合物約４５ｇを
１００＋ｍｅ白金ルツボに入れ、１工００°Ｃで３０分
間加熱して溶融させた。この溶融物を別の金属製容器（
底を外側から水冷）に流し込んで急冷して繊維状の結晶
集合体を得た。この結晶集合体は粉末Ｘ線回折法により
ニチタン酸カリウド（ＫｚＴｉｚＯｓ）であることが確
認された。この結晶集合体は水中に約２時間浸漬するこ
とにより解繊し得られた。得られた繊維を１規定塩酸水
溶液１００ｍｊｌ！に対し１０ｇの割合で処理すること
によりニチタン酸カリウムの層間に含まれるカリウムを
溶脱させ、水洗、風乾して繊維状チタニャ水和物（）Ｉ
ｚＴｔｚＯｓ ’ｎＨｚｏ）を得た。（これを１００
０°Ｃに加熱した際の重量減少が２４．０％であったの
で、ｎ＝１．８と計算される。）この繊維は直径０．１
〜０．５０の束状で長さは平均５閤であった。粉末Ｘ線
回折法により層状構造を有する結晶質であることが確認
された。Example 1゜(1) Fibrous titania hydrate 11□Ti, 05・n
) Preparation of 120 Potassium carbonate and titanium dioxide powder were mixed in a molar ratio of 1:2. Approximately 45 g of this mixture was placed in a 100+me platinum crucible and heated at 00° C. for 30 minutes to melt it. Transfer this melt to another metal container (
The bottom was poured into a water cooler from the outside and quenched to obtain a fibrous crystal aggregate. This crystal aggregate was confirmed to be potassium nititanate (KzTizOs) by powder X-ray diffraction. This crystal aggregate was defibrated by immersing it in water for about 2 hours. The obtained fibers were added to 100 mjl of 1N hydrochloric acid aqueous solution! Potassium contained between the layers of potassium nititanate is leached out by treating at a ratio of 10 g to
zTtzOs 'nHzo) was obtained. (This is 100
Since the weight loss upon heating to 0°C was 24.0%, n=1.8 is calculated. ) This fiber has a diameter of 0.1
~0.50 bundles with an average length of 5 loaves. It was confirmed by powder X-ray diffraction that it was crystalline with a layered structure.
（２）水溶液中の希土類元素の吸着回収上記（１）で得
られた繊維状チタニャ水和物１ｇを０．１ ｍｏｆ ｄ
ｍ−”の４度の希土類酢酸塩水溶液（代表として、Ｙ、
Ｌａ、 Ｃｅ、 Ｎｄ、 Ｓｍ、 Ｇｄを使用）１０
抛！中にパンチ法で浸漬し、２５°Ｃで１４日間接触さ
せた。吸着処理後上澄液中の残存希土類元素量をキレー
ト滴定法もしくは誘導結合アルゴンプラズマ発光分光法
によって定量して吸着前との濃度差により吸着量を求め
た。希土類元素が吸着された固相はが過水洗後風乾し、
７００°Ｃで１時間加熱して水分含量を測定した。以下
にこの実験により求められた各希土類元素の吸着量、水
分含量、吸着体の化学組成を示す。(2) Adsorption and recovery of rare earth elements in aqueous solution 1 g of the fibrous titania hydrate obtained in (1) above is 0.1 mof d
m-” 4 degree rare earth acetate aqueous solution (representatively Y,
(Using La, Ce, Nd, Sm, Gd) 10
Haru! It was immersed in the liquid by punching method and left in contact at 25°C for 14 days. The amount of rare earth elements remaining in the supernatant after adsorption treatment was determined by chelate titration or inductively coupled argon plasma emission spectroscopy, and the adsorbed amount was determined from the difference in concentration from before adsorption. The solid phase on which the rare earth elements have been adsorbed is washed with water and then air-dried.
The water content was measured after heating at 700°C for 1 hour. The adsorption amount of each rare earth element, water content, and chemical composition of the adsorbent obtained through this experiment are shown below.
妥−
藪
区
電 ＞ ｊ ♂ ！ 湧 Ｓ実施例 ２
゜
繊維状チタニャ水和物の希土類元素に対する選択的吸着
試験
実施例１で得られた繊維状チタニャ水和物０．１ｇを１
ｘｔｏ−’ ｍｏｆｆｉ ｄｍ−’の濃度のＬａ、
Ｇｄ、 Ｎｄの希土類硝酸塩水溶液１０ｃｍ″と２５°
Ｃで２週間接触させた。この際液相のｐＨ値を硝酸添加
により制御した。Yabu Ward ＞ j ♂! Yuu S example 2
゜Selective adsorption test for rare earth elements on fibrous titania hydrate 0.1 g of the fibrous titania hydrate obtained in Example 1
xto-' moffi dm-' concentration La,
Rare earth nitrate aqueous solution of Gd and Nd 10cm'' and 25°
C for 2 weeks. At this time, the pH value of the liquid phase was controlled by adding nitric acid.
し、次の式から分配係数を計算した。Then, the distribution coefficient was calculated from the following formula.
但し、固相中の希土類元素量は液相の初期濃度と平衡後
の濃度の差として求めた。However, the amount of rare earth elements in the solid phase was determined as the difference between the initial concentration in the liquid phase and the concentration after equilibrium.
その結果は第１図の通りであった。この図が示すように
Ｌａ、 Ｇｄ、 Ｎｄの希土類元素はいずれも分配係数
の対数と液相のｐｉ値とは良好な直線関係を示した。比
較のため、アルカリ土類金属、二価遷移金属のデータを
併示した。The results were as shown in Figure 1. As shown in this figure, the rare earth elements La, Gd, and Nd all showed a good linear relationship between the logarithm of the partition coefficient and the pi value of the liquid phase. For comparison, data on alkaline earth metals and divalent transition metals are also shown.
金属イオンの吸着性は分配係数の大小で評価することが
でき、希土類元素の吸着性がアルカリ土類金属、二価遷
移金属（Ｇｏを除く）よりも大きいことが分かる。The adsorptivity of metal ions can be evaluated by the size of the distribution coefficient, and it can be seen that the adsorptivity of rare earth elements is greater than that of alkaline earth metals and divalent transition metals (excluding Go).
発明の効果 本発明の吸着回収材は、耐熱性、耐放射線性。Effect of the invention The adsorption and recovery material of the present invention has heat resistance and radiation resistance.
耐酸、耐アルカリ性に優れているため、高温水中、高い
放射線量下でも使用し得られ、また強酸、強アルカリ中
でも劣化が少ない。かつ希土類元素の吸着能も優れ、ま
た繊維状であるため、取扱いが容易であるばかりでなく
、固液分離が容易で、カラムにした場合口づまりもなく
効率よく希土類元素と吸着回収し得られる。Because it has excellent acid and alkali resistance, it can be used in high-temperature water and under high radiation doses, and there is little deterioration even in strong acids and strong alkalis. It also has an excellent ability to adsorb rare earth elements, and since it is fibrous, it is not only easy to handle, but also easy to perform solid-liquid separation, and when used in a column, it can adsorb and recover rare earth elements efficiently without clogging. .
第１図は、本発明の吸着回収材による希土類元素の分配
係数と液相のｐＨとの関係図である。
−一。
特許出願人 科学技術庁無機材質研究所長瀬 高
信 雄FIG. 1 is a diagram showing the relationship between the distribution coefficient of rare earth elements and the pH of the liquid phase using the adsorption and recovery material of the present invention. -One. Patent applicant Takashi Nagase, Institute of Inorganic Materials, Science and Technology Agency
Nobuo
Claims (1)
ウムして得られる繊維状チタニア水和物からなる水溶液
中の希土類元素の吸着回収材。A material for adsorbing and recovering rare earth elements in an aqueous solution, which is made of fibrous titania hydrate obtained by depotassiuming fibrous crystals of potassium dititanate by acid treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63084746A JPH01258737A (en) | 1988-04-06 | 1988-04-06 | Adsorbent for recovery of rare earth element in aqueous solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63084746A JPH01258737A (en) | 1988-04-06 | 1988-04-06 | Adsorbent for recovery of rare earth element in aqueous solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01258737A true JPH01258737A (en) | 1989-10-16 |
| JPH0525542B2 JPH0525542B2 (en) | 1993-04-13 |
Family
ID=13839255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63084746A Granted JPH01258737A (en) | 1988-04-06 | 1988-04-06 | Adsorbent for recovery of rare earth element in aqueous solution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01258737A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018163954A1 (en) * | 2017-03-08 | 2018-09-13 | 株式会社荏原製作所 | Alkaline earth metal ion adsorbent, method for producing same, and alkaline earth metal ion-containing liquid processing apparatus |
| WO2019093008A1 (en) * | 2017-11-13 | 2019-05-16 | チタン工業株式会社 | Strontium ion adsorbent material and method for producing same |
| JP2020037087A (en) * | 2018-09-05 | 2020-03-12 | 株式会社荏原製作所 | Cobalt ion adsorption agent and method for producing the same, and cobalt ion-containing liquid processing apparatus |
| JP2020185505A (en) * | 2019-05-10 | 2020-11-19 | 株式会社荏原製作所 | Cobalt ion adsorbent and method for producing the same |
-
1988
- 1988-04-06 JP JP63084746A patent/JPH01258737A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018163954A1 (en) * | 2017-03-08 | 2018-09-13 | 株式会社荏原製作所 | Alkaline earth metal ion adsorbent, method for producing same, and alkaline earth metal ion-containing liquid processing apparatus |
| US11446631B2 (en) | 2017-03-08 | 2022-09-20 | Titan Kogyo Kabushiki Kaisha | Alkaline earth metal ion adsorbent, and production method of the same, and alkaline earth metal ion-containing liquid treatment apparatus |
| WO2019093008A1 (en) * | 2017-11-13 | 2019-05-16 | チタン工業株式会社 | Strontium ion adsorbent material and method for producing same |
| JP2019089010A (en) * | 2017-11-13 | 2019-06-13 | チタン工業株式会社 | Strontium ion adsorbent and method for producing the same |
| JP2020037087A (en) * | 2018-09-05 | 2020-03-12 | 株式会社荏原製作所 | Cobalt ion adsorption agent and method for producing the same, and cobalt ion-containing liquid processing apparatus |
| WO2020050270A1 (en) * | 2018-09-05 | 2020-03-12 | 株式会社荏原製作所 | Cobalt ion adsorbent, method for producing same and treatment apparatus for cobalt ion-containing liquid |
| US11890610B2 (en) | 2018-09-05 | 2024-02-06 | Titan Kogyo Kabushiki Kaisha | Cobalt ion adsorbent, method for producing same and treatment apparatus for cobalt ion-containing liquid |
| JP2020185505A (en) * | 2019-05-10 | 2020-11-19 | 株式会社荏原製作所 | Cobalt ion adsorbent and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0525542B2 (en) | 1993-04-13 |
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