JPS58159814A - Adsorptive treatment - Google Patents
Adsorptive treatmentInfo
- Publication number
- JPS58159814A JPS58159814A JP4173582A JP4173582A JPS58159814A JP S58159814 A JPS58159814 A JP S58159814A JP 4173582 A JP4173582 A JP 4173582A JP 4173582 A JP4173582 A JP 4173582A JP S58159814 A JPS58159814 A JP S58159814A
- Authority
- JP
- Japan
- Prior art keywords
- titanic acid
- liquid
- water
- carrageenan
- adsorbed
- 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
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はチタン酸粉末を用いて液体中に含まれる不要物
質の吸着処理を行なったチタン酸分散液体中に酸性多糖
質を加えてチタン酸を凝集せしめることを特徴とする液
体の吸着処理方法に関する。[Detailed Description of the Invention] The present invention is characterized in that an acidic polysaccharide is added to a titanic acid dispersion liquid that has been subjected to adsorption treatment for unnecessary substances contained in the liquid using titanic acid powder to aggregate titanic acid. The present invention relates to a liquid adsorption treatment method.
更に詳しくは水不溶性アルミニウム化合物をＯＤｌ乃至
１チ含有するチタン酸を吸着処理すべき液体中に分散せ
しめ不要物全吸着後、膣液に酸性多糖類を０１乃至１％
加えてチタン酸を凝集せしめることを特徴とする液体の
吸着処理方法に関するものである。More specifically, a water-insoluble aluminum compound containing titanic acid containing ODl to 1% is dispersed in the liquid to be adsorbed, and after all unnecessary substances have been adsorbed, acidic polysaccharides are added to the vaginal fluid in an amount of 0.1 to 1%.
The present invention also relates to a liquid adsorption treatment method characterized by coagulating titanic acid.
チタン酸とは含水酸化チタン又は水酸化チタン酸とも称
されるチタン化合物であり、含水の化学的状暢によりオ
ルトチタン酸とメタチタン酸の２種類存在するとされて
いる。いずれのチタン酸も両性化合物に媚し吸着剤とし
て汎く利用されていることは周知のとおりである。また
、このチタン酸は海水中の微量のウランを選択的に吸着
することが出来、将来、原子炉燃料は海水中からチタン
酸により回収され念ウランによりまかなわれることも考
えられている。Titanic acid is a titanium compound also called hydrous titanium oxide or hydroxide titanic acid, and it is said that there are two types of titanic acid, orthotitanic acid and metatitanic acid, depending on the chemical state of water content. It is well known that all titanic acids are attractive to amphoteric compounds and are widely used as adsorbents. Furthermore, this titanic acid can selectively adsorb trace amounts of uranium in seawater, and it is thought that in the future nuclear reactor fuel will be recovered from seawater using titanic acid and supplied with uranium.
又、ウラン鉱山から廃水中には高濃度の放射性元素であ
るラジウム、ウランが含まれており、該廃水の処理にも
チタン酸吸着材が使用するとその処理効率が向上する。In addition, wastewater from uranium mines contains high concentrations of the radioactive elements radium and uranium, and if a titanic acid adsorbent is used in the treatment of this wastewater, the treatment efficiency will be improved.
或いは低品位ウラン鉱山にホ）いてはインプレースリー
チング法により高濃度ウランｆＬヲ得、高効率でウラン
全採取することが行なわれているが、この場合にもチタ
ン酸により吸着１！１１収が効率的であるとされる。Alternatively, in low-grade uranium mines, high-concentration uranium fL is obtained by in-place leaching method, and all uranium is extracted with high efficiency. It is said to be efficient.
史にはチタン酸は砒素に対しても高い吸着能全有し砒素
含有廃水の処理でも有効な吸着材である。Historically, titanic acid has a high adsorption capacity for arsenic and is an effective adsorbent for treating arsenic-containing wastewater.
このようにチタン酸は前述した如き高い吸着能を有する
にも拘らず、その形状が粉末であるために取り扱いが困
難であり、一般的には適当な粒径に造粒しカラムに充填
した状態で使用されている。Although titanic acid has a high adsorption capacity as mentioned above, its powder form makes it difficult to handle, and it is generally granulated to an appropriate particle size and packed in a column. used in
しかしながらチタン酸はその造粒により比表面積の低下
、成形剤の影響を受けるため吸着能の低下は峨けられな
い。However, since titanic acid has a reduced specific surface area due to its granulation and is affected by the molding agent, the adsorption capacity cannot be reduced.
粉末状チタン酸取り扱いの問題は吸着処理のチタン酸の
回収にある。つまり吸着処理すべき液体中に分散したチ
タン酸を効率よ（回収し、脱着し、再使用するサイクル
に組み込むことが出来るならば上述したチタン酸の造粒
による不都合がなく望しい方法であり、従来法としては
、液体媒体中に分散されたチタン酸吸着材をｒ適法遠心
分離法等の方法によってやってきたがこれらの方法は多
大なエネルギーを要する。The problem with handling powdered titanic acid lies in the recovery of titanic acid through adsorption treatment. In other words, if the titanic acid dispersed in the liquid to be adsorbed can be incorporated into a cycle of efficient recovery, desorption, and reuse, it would be a desirable method without the inconvenience caused by the granulation of titanic acid mentioned above. Conventionally, titanic acid adsorbents dispersed in a liquid medium have been subjected to methods such as tertiary centrifugation, but these methods require a large amount of energy.
そこ≠本発明者らは効率よく処理液体媒体中よりチタン
酸を回収する方法について鋭意検討を重ねた結果、水不
溶性アルミニウム化合物を含有せしめた粉末状チタン酸
を分散した処理水中に酸性多糖類全添加することにより
チタン酸は該媒体中で高度に凝集せしめる本発明全完成
した。これはチタン酸中に含ませ次水不溶性アルミニウ
ム化合物と酸性多糖類との相互作用に起因するものであ
る。As a result of extensive research into a method for efficiently recovering titanic acid from a treated liquid medium, the present inventors found that all acidic polysaccharides were added to treated water in which powdered titanic acid containing a water-insoluble aluminum compound was dispersed. By adding titanic acid to a high degree of agglomeration in the medium, the present invention was completed. This is due to the interaction between the water-insoluble aluminum compound contained in titanic acid and the acidic polysaccharide.
本発明全実施するに際して用いる水不溶性アルミニウム
化合物とは酸化アルミニウム、水酸化アルミニウム等実
質的に水に溶解しないアルミニウム含有物質を指す。本
発明を実施する上で該アルミニウム化合物はチタン酸に
０．１％以上含有せしぬれば良い。しかしこの添Ｄ口ｔ
はチタン酸固有の吸着性に影響を与えない程度の範囲に
するのがよく、好しくけ１壬ｕ下に抑制すべきである。The water-insoluble aluminum compound used in carrying out the present invention refers to aluminum-containing substances such as aluminum oxide and aluminum hydroxide that are substantially insoluble in water. In carrying out the present invention, the aluminum compound may be contained in titanic acid in an amount of 0.1% or more. However, this attachment
is preferably within a range that does not affect the inherent adsorption properties of titanic acid, and should preferably be suppressed to less than 1 μm.
水不溶性アルミニウム化合物ｉ ０．１乃至１％含有せ
しめたチタン酸は実質的にその吸着能力が低下しないだ
けでなく、粉末状チタン酸の要処理水中分散性”゛向１
＝ｆ′″０とも特筆す４き点である・ ｉ
かかるチタン酸を分散せしめた水中よりチタン酸を凝集
するに用いられる酸性多糖類は、寒天、アルギン酸、カ
ラギーナン、ペクチン、グアカム、ローカストビーンガ
ム等が挙げられる。これらの多糖＠は水不溶性のアルミ
ニウム化合物との相互作用により容易に水性媒体中に於
て不溶化する。Titanic acid containing 0.1 to 1% of a water-insoluble aluminum compound not only does not substantially reduce its adsorption capacity, but also has the ability to improve the dispersibility of powdered titanic acid in water, which requires treatment.
＝f′″0 is also a four point worth mentioning・i
Examples of acidic polysaccharides used to aggregate titanic acid from water in which titanic acid is dispersed include agar, alginic acid, carrageenan, pectin, guacam, and locust bean gum. These polysaccharides are easily insolubilized in aqueous media by interaction with water-insoluble aluminum compounds.
これらの多糖類はいずれも単独で或いは２者以上−組合
わせて用いることができる。と（に、常温の水に対する
溶解性もしくは膨潤性が良好であり、その粘度が比較的
低いにもかかわらず、アルミニウム化合物によって容易
に凝集し、水中からの分離回収を行いうるカラギーナン
加就中イオタカラキーナンが有効である。カラギーナン
は紅藻類に基含有１と３．６−アンヒドロガラクトース
含有量の差によりカッパカラギーナン、ラムダカラギー
ナン、イオタカラギーナンに大別され、この３種の力→
ギーナンは物理的性質が異る。つまりカッパカラギーナ
ンは常温の水に難溶性であり加温溶解後冷却により強い
ゲルを形成する。ラムダカラギーナンは常温の水に容易
に溶解しゲルを形成しない。又イオタカラギーナンは常
温の水に膨潤し加温溶解後冷却により弱いゲルを形成す
る。これが一般的な性質であるが硫酸残基のカウンター
イオンの種類により、符に溶解性ゲルの性質が異る。Any of these polysaccharides can be used alone or in combination of two or more. (In addition, carrageenan has good solubility or swelling property in water at room temperature, and although its viscosity is relatively low, it easily aggregates with aluminum compounds and can be separated and recovered from water.) Takarakeenan is effective.Carrageenan is broadly classified into kappa carrageenan, lambda carrageenan, and iota carrageenan based on the difference in the content of 1 and 3,6-anhydrogalactose groups in red algae.
Geenan has different physical properties. In other words, kappa carrageenan is poorly soluble in water at room temperature, and forms a strong gel by heating and dissolving it and then cooling it. Lambda carrageenan easily dissolves in water at room temperature and does not form a gel. Furthermore, iota carrageenan swells in water at room temperature and forms a weak gel when heated and dissolved and then cooled. Although this is a general property, the properties of the soluble gel differ significantly depending on the type of counter ion of the sulfuric acid residue.
つまりカウンターイオンとしてナトリウムを有する場合
にはカッパカラギーナン、イオタカラギーナンにおいて
は常温の水に対する溶解性が高くなりゲルの形成しな□
い。In other words, when kappa carrageenan and iota carrageenan have sodium as a counter ion, they have higher solubility in water at room temperature and do not form gels.
stomach.
上に述べた水に対する溶解性の点より本発明の実施に際
して用いる多糖類としてはラムダカラギーナン、イオタ
カラギーナン、及びカッパカラギーナン、ナトリウム塩
を用いるのが有効である。In view of the above-mentioned solubility in water, it is effective to use lambda carrageenan, iota carrageenan, kappa carrageenan, and sodium salts as polysaccharides used in the practice of the present invention.
カラギーナンの種類による物理的性質のもうひとつの特
徴はその水溶液の粘度である。常温の水にカラギーナン
を０５チ分散せしめた時の２５℃の粘度はカッパカラギ
ーナンは１０センチポイズ（ｃｒ’） 、イオタカラギ
ーナンは２０ＣＰ、ラムダカラギーナンは１５０ ＣＰ
である。本発明の目的全達成するには粘度が低い方が有
効であるので、カッパカラギーナン、イオタカラギーナ
ンが良い。Another physical property characteristic of carrageenan is the viscosity of its aqueous solution. When carrageenan is dispersed in water at room temperature, the viscosity at 25°C is 10 centipoise (cr') for kappa carrageenan, 20 CP for iota carrageenan, and 150 CP for lambda carrageenan.
It is. Since a lower viscosity is more effective in achieving all the objectives of the present invention, kappa carrageenan and iota carrageenan are preferred.
カラギーナンの化学的性質として酸性下では容易に劣化
し、又酸化剤の作用によっても迅速に分解されることが
挙げられる。これらの分解は加熱により加速される。こ
のことは吸着回収されたチタン酸を酸で脱着処理した後
活性化処理する際にカラギーナンも容易に分解全骨け、
チタン酸の回収が容易となるのであり、このことはチタ
ン酸をリサイクルして使用する上で、有利な点である。The chemical properties of carrageenan include that it easily deteriorates under acidic conditions and is also rapidly decomposed by the action of oxidizing agents. These decompositions are accelerated by heating. This means that when the adsorbed and recovered titanic acid is desorbed with acid and then activated, carrageenan is easily decomposed into whole bones.
The recovery of titanic acid becomes easy, and this is an advantageous point in recycling and using titanic acid.
本発明を実施するには水不溶性アルミニウム化合物’に
０．０１乃至１％含有せしめ念チタン酸粉末を水中に１
チ程度分散して処理した該分散液にカラギーナンを０．
１乃至１チ添加攪拌した後、静置しチタン酸の沈降せし
めることによって行なうことができ、従来法に比し、そ
の沈降速度を極めて大きなものとすることができる。To carry out the present invention, a water-insoluble aluminum compound containing 0.01 to 1% titanic acid powder is added to water at a concentration of 1%.
0.0% carrageenan was added to the dispersion that had been dispersed and treated to a certain extent.
This can be carried out by adding 1 to 1 titanic acid and stirring, and then allowing the titanic acid to settle, allowing the sedimentation rate to be extremely high compared to conventional methods.
以下実施例に従って本発明を更に具体的に説明する。The present invention will be described in more detail below with reference to Examples.
実施例
０５チの酸化アルミニウムを含有するメタチタン酸で３
２０メツシユの篩を通過した粉末１＠ｔ−９９部の水に
加え３００ ｒｐｍで３０分間攪拌した。Example 05 3 with metatitanic acid containing aluminum oxide
The powder passed through a 20 mesh sieve was added to 1@t-99 parts of water and stirred at 300 rpm for 30 minutes.
該分散液に第１表に示す酸性多糖類０．５部加えて更に
３００ ｒｐｍで３０間攪拌した後３０分及び６０分後
の沈殿層が占める体積の２全体の体積に対する割合を測
定した結果を第１表に示した。After adding 0.5 part of the acidic polysaccharide shown in Table 1 to the dispersion and stirring at 300 rpm for 30 minutes, the ratio of the volume occupied by the precipitated layer to the total volume of 2 after 30 and 60 minutes was measured. are shown in Table 1.
表−１Table-1
Claims (1)
有せしめたチタン酸粉末を、吸着処理すべき液体中に分
散し吸着すべき物質を吸着した後膣液体に酸性多糖＠ｖ
ｏ、ｏｓ乃至１％なる割合で加えてチタン酸粉末を凝集
せしめることｔ−特徴とする吸着処理法。Titanic acid powder containing water-insoluble aluminum compounds 'io, ol to 1ts is dispersed in the liquid to be adsorbed, and after adsorbing the substance to be adsorbed, the acidic polysaccharide @v is added to the vaginal fluid.
An adsorption treatment method characterized in that titanic acid powder is added in a proportion of 0, os or 1% to cause agglomeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4173582A JPH0249761B2 (en) | 1982-03-18 | 1982-03-18 | KYUCHAKU SHORIHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4173582A JPH0249761B2 (en) | 1982-03-18 | 1982-03-18 | KYUCHAKU SHORIHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58159814A true JPS58159814A (en) | 1983-09-22 |
| JPH0249761B2 JPH0249761B2 (en) | 1990-10-31 |
Family
ID=12616674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4173582A Expired - Lifetime JPH0249761B2 (en) | 1982-03-18 | 1982-03-18 | KYUCHAKU SHORIHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0249761B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783265A (en) * | 1984-04-11 | 1988-11-08 | Hydro International Limited | Water treatment |
| JPWO2020241136A1 (en) * | 2019-05-29 | 2020-12-03 |
-
1982
- 1982-03-18 JP JP4173582A patent/JPH0249761B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783265A (en) * | 1984-04-11 | 1988-11-08 | Hydro International Limited | Water treatment |
| JPWO2020241136A1 (en) * | 2019-05-29 | 2020-12-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0249761B2 (en) | 1990-10-31 |
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