JPS63241000A - Method for dehydrating granular material containing water - Google Patents
Method for dehydrating granular material containing waterInfo
- Publication number
- JPS63241000A JPS63241000A JP62074138A JP7413887A JPS63241000A JP S63241000 A JPS63241000 A JP S63241000A JP 62074138 A JP62074138 A JP 62074138A JP 7413887 A JP7413887 A JP 7413887A JP S63241000 A JPS63241000 A JP S63241000A
- Authority
- JP
- Japan
- Prior art keywords
- water
- resin
- powder
- granular material
- super absorbent
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000008187 granular material Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 16
- 239000011347 resin Substances 0.000 claims abstract description 56
- 229920005989 resin Polymers 0.000 claims abstract description 56
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003960 organic solvent Substances 0.000 claims abstract description 15
- 230000018044 dehydration Effects 0.000 claims abstract description 12
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 12
- 239000003245 coal Substances 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 230000001172 regenerating effect Effects 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 4
- 239000011707 mineral Substances 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 27
- 239000002250 absorbent Substances 0.000 claims description 19
- 230000002745 absorbent Effects 0.000 claims description 17
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920000578 graft copolymer Polymers 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 239000012492 regenerant Substances 0.000 claims 1
- 239000012024 dehydrating agents Substances 0.000 abstract description 17
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 abstract 1
- 239000002904 solvent Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔発明の背景〕
技術分野および先行技術
本発明は、高吸水性樹脂を脱水剤として使用する含水粉
粒体の脱水法に関する。さらに具体的には、本発明は、
使用した高吸水性樹脂の再生法に主要な特徴を有する含
水粉粒体の脱水法に関する。DETAILED DESCRIPTION OF THE INVENTION [Background of the Invention] Technical Field and Prior Art The present invention relates to a method for dehydrating water-containing powder and granules using a superabsorbent resin as a dehydrating agent. More specifically, the present invention provides:
This invention relates to a method for dehydrating water-containing powder and granules, which has the main characteristics of a method for regenerating the superabsorbent resin used.
従来、石炭類をはじめとする鉱産物及びスラッジ等の含
水粉粒体の脱水は、熱エネルギー又は機械的エネルギー
等をｉｌｌ用して行なわれているが、省エネルギ一対２
１あるいは脱水率の限界等の理由から、最近は高吸水性
樹脂等の脱水剤を利用して脱水することが試みられてい
る。Conventionally, dehydration of mineral products such as coal and water-containing granular materials such as sludge has been carried out using illumination, such as thermal energy or mechanical energy.
Recently, attempts have been made to dehydrate using dehydrating agents such as superabsorbent resins for reasons such as 1 or the limit of dehydration rate.
しかしながら、これらの方法はいずれも、最適な脱水剤
の再生方法がなく、実用化するには経済的に高価なもの
となる。However, none of these methods has an optimal method for regenerating the dehydrating agent, and is economically expensive to put into practical use.
要旨
一セ発明は上記の点に解決を与えることを目的とし、脱
水剤として使用して含水状態となった高吸水性樹脂を水
溶性有機溶剤で脱水して再生させることによってこの目
的を達成しようとするものである。Abstract: The purpose of the invention is to provide a solution to the above-mentioned problems, and to achieve this purpose by dehydrating and regenerating a super absorbent resin that has become hydrated by using it as a dehydrating agent with a water-soluble organic solvent. That is.
すなわち、本発明による含水粉粒体の脱水法は、含水粉
粒体に粉粒体状の高吸水性樹脂を添加して含水粉粒体中
の水分の少なくとも大部分を該高吸水性樹脂に吸収させ
、生成する脱水粉粒体と含水樹脂との混合物を分離操作
に付して前者を脱水粉粒体として回収し、一方、この分
離操作から得られる含水樹脂を水溶性有機溶媒（ただし
、高吸水性樹脂に対する溶解能を実質的に持たないもの
）またはその高濃度水溶液である再生剤で処理して、該
含水樹脂を脱水してその高吸水性を少なくとも部分的に
再生させること、を特徴とするものである。That is, the method of dehydrating a water-containing powder or granule according to the present invention involves adding a powder-like super absorbent resin to a water-containing powder and granule, and transferring at least most of the water in the water-containing powder to the super absorbent resin. The resulting mixture of dehydrated powder and granules and water-containing resin is subjected to a separation operation to recover the former as a dehydrated powder, while the water-containing resin obtained from this separation is treated with a water-soluble organic solvent (however, dehydrating the water-containing resin and at least partially regenerating its superabsorbency by treating the water-containing resin with a regenerating agent that has substantially no dissolving ability for the super-absorbent resin or a highly concentrated aqueous solution thereof; This is a characteristic feature.
効果
本発明によれば、含水粉粒体を直接に熱エネルギーで脱
水する場合に比べて約２０％のエネルギーで、脱水を行
なうことができる。Effects According to the present invention, water-containing powder can be dehydrated using approximately 20% less energy than when directly using thermal energy to dehydrate the water-containing powder.
使用済みの含水樹脂の９機溶剤による脱水は容易にかつ
効果的に行なうことができ、しがち使用する一１η機溶
剤は現在でも安価なものとなっているから、比較的高価
な高吸水性樹脂の再使用が可能を本発明による含水粉粒
体の脱水法は工業的に有（りなものということができる
。Dehydration of used water-containing resins using 9-mer solvents can be carried out easily and effectively, and the 11-mer solvents that are commonly used are still inexpensive, so relatively expensive highly water-absorbing solvents can be dehydrated. The method of dehydrating water-containing powder and granules according to the present invention, which enables the reuse of resin, can be said to be industrially available.
本発明による含水粉粒体の脱水は高吸水性樹脂を脱水剤
とし、脱水剤として使用済みの含水樹脂を（−７匹溶剤
で脱水することがら基本的になる。The dehydration of water-containing powder or granules according to the present invention basically consists of using a super absorbent resin as a dehydrating agent and dehydrating the used water-containing resin with a solvent as the dehydrating agent.
に・１家含水扮拉体
本発明によって脱水すべき含水粉粒体は、石炭、各種鉱
石、ａＲ物等のスラリないしスラッジである。The water-containing granules to be dehydrated according to the present invention are slurries or sludges of coal, various ores, AR materials, etc.
なお、ここで「育機物」は、脱水剤として使用する高吸
水性樹脂よりも吸水性の少ないものであることが本発明
の精神からいって理解されるべきである。これらのうち
で代表的なのは、石炭または鉱Ｇのスラリないしスラッ
ジ、特に、ン濾過などの脱水が困難な粒径の小さな粒子
からなるもの、である。In addition, it should be understood from the spirit of the present invention that the "growth material" here has a lower water absorption than the super absorbent resin used as a dehydrating agent. Typical of these is coal or ore G slurry or sludge, especially those consisting of small particles that are difficult to dewater by filtration.
含水粉粒体は、その含水１丈が高ければ脱水剤の使用量
が多くなるところから、比較的高濃度のもの（すなわち
低含水度のもの）が好ましい。The water-containing powder is preferably one with a relatively high concentration (that is, one with a low water content), since the higher the water content, the greater the amount of dehydrating agent used.
高吸水性樹脂
本発明で使用する高吸水性樹脂は、架橋ビニルアルコー
ル−アクリル酸共重合体、架橋ポリビニルアルコール、
でんぷん−アクリロニトリルグラフトポリマー加水分解
変性物、架橋ポリアクリル酸塩及び親水基導入オレフィ
ン系ポリマーから選んだもので、純水の吸水率が２０−
２０００倍の範囲内にあるもの、が代表的である。Super absorbent resin The super absorbent resin used in the present invention includes cross-linked vinyl alcohol-acrylic acid copolymer, cross-linked polyvinyl alcohol,
Selected from hydrolyzed modified starch-acrylonitrile graft polymers, crosslinked polyacrylates, and hydrophilic group-introduced olefin polymers, with a pure water absorption rate of 20-
A typical range is 2000 times.
使用する高吸水性樹脂は粉粒体状のものであるところ、
その粒径は含水粉粒体の粒径よりも一般的には大きい方
がよい。一般に、粒径は５００μｍ以上が望ましく、好
ましくは１，０００〜５．０００μｍが適している。５
００μｍ未満の場合は、樹脂が含水粉粒体の表面に付着
して、脱水後の分、＃操作が困難となる。The super absorbent resin used is in the form of powder,
Generally, the particle size is preferably larger than that of the water-containing powder. Generally, the particle size is preferably 500 μm or more, preferably 1,000 to 5,000 μm. 5
If it is less than 00 μm, the resin will adhere to the surface of the water-containing powder, making # operation difficult after dehydration.
使用する高吸水性樹脂の形状は任意であって、無定形で
あってもよいが、上記と同様の理由で球状のものが好ま
しい。The shape of the superabsorbent resin used is arbitrary and may be amorphous, but a spherical one is preferable for the same reason as above.
脱水剤
使用済みの高吸水性樹脂は含水状態となっているところ
、本発明ではその脱水を水混和性有機溶剤による処理、
すなわち水の抽出、によって行なう。 脱水剤としての
有機溶剤はそれへの水の溶解度が十分に大きなものであ
るべきであって、一般に水溶性の有機溶剤から選ばれる
。一方、この溶剤は高吸水性樹脂を溶解するものであっ
てはならない（もっとも、高吸水性樹脂は架橋構造を持
つものが多いから、これが有機溶剤に溶解するというこ
とはあまりないであろう）。Super absorbent resin that has used a dehydrating agent is in a hydrated state, but in the present invention, the dehydration is performed by treatment with a water-miscible organic solvent,
In other words, it is done by extracting water. The organic solvent used as a dehydrating agent should have a sufficiently high solubility in water, and is generally selected from water-soluble organic solvents. On the other hand, this solvent must not dissolve the superabsorbent resin (however, since many superabsorbent resins have a crosslinked structure, it is unlikely that they will dissolve in organic solvents). .
このような利点から適当な有機溶剤は、低級ケトンおよ
び低級アルコールである。これらは、必要に応じて混合
物であってもよい。Due to these advantages, suitable organic solvents are lower ketones and lower alcohols. These may be a mixture if necessary.
本発明で使用する脱水剤は、このような有機溶剤または
その水溶液である。水溶液の場合は、有機溶剤濃度が高
くて未だ十分な水抽出能力が残っているものでなければ
ならないことはいうまでもない。また、この有機溶剤は
脱水剤として使用した後は蒸留によってそれ自身の脱水
をすることになるから、水とのあるいは複数種の有機溶
剤を併用した場合は相互との（または更に水との）共沸
組成（もしそれが存在すれば）であると便利であろう。The dehydrating agent used in the present invention is such an organic solvent or an aqueous solution thereof. In the case of an aqueous solution, it goes without saying that it must have a high organic solvent concentration and still have sufficient water extraction ability. In addition, after this organic solvent is used as a dehydrating agent, it will dehydrate itself through distillation, so if it is used with water or multiple types of organic solvents together, it may be difficult to use it with each other (or even with water). An azeotropic composition (if it exists) may be convenient.
このようなところから、本発明で使用する代表的な脱水
剤は、アセトンまたはアセトン含瓜が４５容瓜％以りの
アセトン水溶液である。For this reason, the typical dehydrating agent used in the present invention is acetone or an acetone aqueous solution containing 45% or more of melon by volume.
含水粉粒体の脱水工程
対象な水粉粒体にその遊離水の実質的全二を吸収するこ
とのできる種類ないし量の扮拉体状高吸水性樹脂を添加
して、混合する。Dehydration process of water-containing powder and granules A superabsorbent resin of a type or amount capable of absorbing substantially all of the free water is added to the water-containing powder and granules and mixed.
脱水された粉粒体と含水した高吸水性樹脂との混合物が
生成するから、それを篩分等による分離操作に付して、
前者を回収する。A mixture of dehydrated powder and hydrated superabsorbent resin is produced, which is separated by sieving, etc.
Collect the former.
一方、この分離操作によって得られる含水した高吸水性
樹脂は、これを脱水剤で処理して、たとえば両者を混合
して、樹脂中の水分を脱水剤中に抽出して、その高吸水
性を少なくとも部分的に再生させる。このようにして得
られる高吸水性樹脂の再生品は、同種のあるいは異種の
含水性粉粒体の同様な脱水に再使用することができ、そ
れがまた本発明の好ましい実施態様でもある。On the other hand, the water-containing superabsorbent resin obtained by this separation operation is treated with a dehydrating agent, for example, by mixing the two and extracting the water in the resin into the dehydrating agent to reduce its superabsorbent property. Regenerate at least partially. The recycled superabsorbent resin thus obtained can be reused for similar dehydration of the same or different types of water-containing powder and granules, which is also a preferred embodiment of the present invention.
一方、上記の脱水工程から回収された脱水剤は、蒸留、
塩化カルシウムその他のような吸水性無機物による処理
、その他の手段によってそれ自身の脱水を行なって、脱
水剤として再使用する。On the other hand, the dehydrating agent recovered from the above dehydration process can be distilled,
It dehydrates itself by treatment with water-absorbing minerals such as calcium chloride or other means and is reused as a dehydrating agent.
実験例
実施例１
含水率３６％に調整した微粉炭１００重は部と高吸水性
樹脂（市販品三菱油化（株）製ダイヤウＪ−ット）４重
環部とを約３０分間撹拌混合した結果、微粉炭の含水率
は５．５％まで低下した。これを全網製ＷＬ（網目０．
３＋ｎ＋ｓ）で、微粉炭と高吸水性樹脂に分離した後
、含水した高吸水性樹脂をアセトン４５容瓜％の水溶液
にて脱水したところ、約８０％脱水された。この脱水さ
れた高吸水性樹脂を再度、含水微粉炭の脱水に使用して
も同一の含水率の微粉炭か得られた。この操作を５回繰
り返しても、全く同一の結果が得られた。Experimental Examples Example 1 100 parts by weight of pulverized coal adjusted to a moisture content of 36% and a super-absorbent resin (commercially available Daiyau J-t manufactured by Mitsubishi Yuka Co., Ltd.) quadruple ring part were stirred and mixed for about 30 minutes. As a result, the moisture content of the pulverized coal decreased to 5.5%. This is made of all-mesh WL (mesh 0.
After separating the super absorbent resin into pulverized coal and the super absorbent resin in step 3+n+s), the hydrated super absorbent resin was dehydrated with an aqueous solution of 45 volumes of acetone and 80% dehydrated. Even when this dehydrated superabsorbent resin was used again to dehydrate hydrous pulverized coal, pulverized coal with the same moisture content was obtained. Even if this operation was repeated five times, exactly the same results were obtained.
実施例２〜６
種類の異なる市販品の高吸水性樹脂を用いて実施例１と
同一の方法で得られたａ水１高吸水性樹脂の脱水をアセ
トン１００９６溶液で脱水させたところ、表１に示す結
果となった。Examples 2 to 6 A water 1 superabsorbent resin obtained in the same manner as in Example 1 using different types of commercially available superabsorbent resins was dehydrated using an acetone 10096 solution.Table 1 The results are shown below.
比較例−１
実施例１で得られた含水高吸水性樹脂を用いてアセトン
ａ度４０容量？６水溶液で脱水させたところ、約３１０
６の脱水しかできなかった。Comparative Example-1 Using the hydrated superabsorbent resin obtained in Example 1, acetone A degree 40 volume? When dehydrated with 6 aqueous solution, it was about 310
I was only able to dehydrate 6.
、”Ｆ ；７二（′ 、 ・・１，７′ ・、ｌずｙ゛ ！・・−− ７／−一 ７・″ ７・″ 、、／ ／′,”F ;72(′ ,...1,7' ・、lzuy゛ !・・−− 7/-1 7・″ 7・″ ,,/ /′
Claims (1)
水粉粒体中の水分の少なくとも大部分を該高吸水性樹脂
に吸収させ、生成する脱水粉粒体と含水樹脂との混合物
を分離操作に付して前者を脱水粉粒体として回収し、一
方、この分離操作から得られる含水樹脂を水溶性有機溶
媒（ただし、高吸水性樹脂に対する溶解能を実質的に持
たないもの）またはその高濃度水溶液である再生剤で処
理して、該含水樹脂を脱水してその高吸水性を少なくと
も部分的に再生させることを特徴とする、含水粉粒体の
脱水法。 ２、高吸水性樹脂が、ビニルアルコール−アクリル酸共
重合体、架橋ポリビニルアルコール、でんぷん−アクリ
ロニトリルグラフトポリマー加水分解変性物、架橋ポリ
アクリル酸塩及び親水基導入オレフィン系ポリマーから
選ばれた、純水の吸水率が２０−２０００倍の範囲内に
あるものである、特許請求の範囲第１項に記載の方法。 ３、高吸水性樹脂の粒径が５００μｍ以上である、特許
請求の範囲第１〜２項のいずれかに記載の方法。 ４、再生剤がアセトンまたはアセトン濃度が４５容量％
以上のアセトン水溶液である、特許請求の範囲第１〜３
項のいずれか１項に記載の方法。 ５、含水粉粒体に添加する粉粒体状の高吸水性樹脂が、
特許請求の範囲第１項記載の含水粉粒体の脱水法を別途
実施して得た高吸水性樹脂の再生品である、特許請求の
範囲第１〜４項のいずれか１項に記載の方法。 ６、含水粉粒体が、石炭または鉱物の水性スラリである
、特許請求の範囲第１〜５項のいずれか１項の記載の方
法。[Scope of Claims] 1. Dehydration produced by adding a powder-like super absorbent resin to a water-containing powder and causing at least most of the water in the water-containing powder to be absorbed by the super absorbent resin. A mixture of powder and water-containing resin is subjected to a separation operation, and the former is recovered as a dehydrated powder, while the water-containing resin obtained from this separation operation is dissolved in a water-soluble organic solvent (however, it is difficult to dissolve the water-containing resin in a superabsorbent resin). water-containing powder particles, characterized in that the water-containing resin is treated with a regenerating agent that is a highly concentrated aqueous solution of the water-containing resin or a highly concentrated aqueous solution thereof to dehydrate the water-containing resin and at least partially regenerate its super absorbency. How to dehydrate your body. 2. Pure water in which the super absorbent resin is selected from vinyl alcohol-acrylic acid copolymer, cross-linked polyvinyl alcohol, hydrolyzed modified starch-acrylonitrile graft polymer, cross-linked polyacrylate, and hydrophilic group-introduced olefin polymer. The method according to claim 1, wherein the water absorption rate is within the range of 20 to 2000 times. 3. The method according to any one of claims 1 to 2, wherein the superabsorbent resin has a particle size of 500 μm or more. 4. The regenerant is acetone or the acetone concentration is 45% by volume.
Claims 1 to 3, which are the above acetone aqueous solutions.
The method described in any one of paragraphs. 5. The powder-like super absorbent resin added to the water-containing powder is
The product according to any one of claims 1 to 4, which is a recycled product of a super absorbent resin obtained by separately carrying out the dehydration method of water-containing powder and granules described in claim 1. Method. 6. The method according to any one of claims 1 to 5, wherein the water-containing powder is an aqueous slurry of coal or mineral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62074138A JPS63241000A (en) | 1987-03-30 | 1987-03-30 | Method for dehydrating granular material containing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62074138A JPS63241000A (en) | 1987-03-30 | 1987-03-30 | Method for dehydrating granular material containing water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63241000A true JPS63241000A (en) | 1988-10-06 |
Family
ID=13538522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62074138A Pending JPS63241000A (en) | 1987-03-30 | 1987-03-30 | Method for dehydrating granular material containing water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63241000A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH029498A (en) * | 1988-06-28 | 1990-01-12 | Sanyo Chem Ind Ltd | Method for dehydrating water containing suspended solid |
| WO2021205780A1 (en) * | 2020-04-10 | 2021-10-14 | ユニ・チャーム株式会社 | Method for producing highly water-absorbing recycled polymer, and highly water-absorbing recycled polymer |
| US20230121091A1 (en) * | 2020-06-09 | 2023-04-20 | Gigabiomol Biyoteknoloji Sanayi Ve Ticaret Limited Sirketi | Microorganism concentration method with elastic polymers |
-
1987
- 1987-03-30 JP JP62074138A patent/JPS63241000A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH029498A (en) * | 1988-06-28 | 1990-01-12 | Sanyo Chem Ind Ltd | Method for dehydrating water containing suspended solid |
| WO2021205780A1 (en) * | 2020-04-10 | 2021-10-14 | ユニ・チャーム株式会社 | Method for producing highly water-absorbing recycled polymer, and highly water-absorbing recycled polymer |
| US20230121091A1 (en) * | 2020-06-09 | 2023-04-20 | Gigabiomol Biyoteknoloji Sanayi Ve Ticaret Limited Sirketi | Microorganism concentration method with elastic polymers |
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