JP6571122B2 - Anion adsorbent composition, fibrous anion adsorbent, and method for producing fibrous anion adsorbent - Google Patents
Anion adsorbent composition, fibrous anion adsorbent, and method for producing fibrous anion adsorbent Download PDFInfo
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- 239000003463 adsorbent Substances 0.000 title claims description 139
- 150000001450 anions Chemical class 0.000 title claims description 102
- 239000000203 mixture Substances 0.000 title claims description 60
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 62
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 31
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 24
- 229920000642 polymer Polymers 0.000 claims description 19
- 229910052684 Cerium Inorganic materials 0.000 claims description 11
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 11
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 229910021536 Zeolite Inorganic materials 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
- 239000004695 Polyether sulfone Substances 0.000 claims description 5
- 229920006393 polyether sulfone Polymers 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 description 48
- GCPXMJHSNVMWNM-UHFFFAOYSA-N arsenous acid Chemical compound O[As](O)O GCPXMJHSNVMWNM-UHFFFAOYSA-N 0.000 description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 6
- 230000007774 longterm Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- QYHFIVBSNOWOCQ-UHFFFAOYSA-N selenic acid Chemical compound O[Se](O)(=O)=O QYHFIVBSNOWOCQ-UHFFFAOYSA-N 0.000 description 6
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- 238000011156 evaluation Methods 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910001680 bayerite Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
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- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000001747 exhibiting effect Effects 0.000 description 1
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- 239000000945 filler Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910001679 gibbsite Inorganic materials 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- -1 quaternary ammonium ions Chemical class 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
本発明は、陰イオン吸着剤組成物、繊維状陰イオン吸着剤、及び繊維状陰イオン吸着剤の製造方法に関する。 The present invention relates to an anion adsorbent composition, a fibrous anion adsorbent, and a method for producing a fibrous anion adsorbent.
環境汚染対策や、下水処理等を目的として種々の吸着剤が開発されている。例えば特許文献１には、有機高分子樹脂と無機イオン吸着体を含み、特定のフィブリル構造を有する多孔性成形体が記載されている。特許文献２には、ゼオライトとハイドロタルサイト様化合物とが結合した、陽イオン及び陰イオン吸着性の吸着材が記載されている。特許文献３には、セルロースに第４級アンモニウムイオンを結合させた陰イオン吸着剤が記載されている。特許文献４には、セルロース繊維を含む基材を陽イオン官能基で変性したイオン吸着剤が記載されている。 Various adsorbents have been developed for environmental pollution control and sewage treatment. For example, Patent Document 1 describes a porous molded body having an organic polymer resin and an inorganic ion adsorbent and having a specific fibril structure. Patent Document 2 describes a cation and anion adsorptive adsorbent in which a zeolite and a hydrotalcite-like compound are bonded. Patent Document 3 describes an anion adsorbent in which quaternary ammonium ions are bound to cellulose. Patent Document 4 describes an ion adsorbent obtained by modifying a substrate containing cellulose fibers with a cationic functional group.
特許文献１〜４に記載の従来の陰イオン吸着剤は粉末形状であり、造粒剤により顆粒状に成形すると吸着性能が著しく低下するという問題があった。
本発明は上記事情に鑑みてなされたものであって、吸着性能が高い繊維状陰イオン吸着剤の製造に好適に用いることができる陰イオン吸着剤組成物、繊維状陰イオン吸着剤、及び繊維状陰イオン吸着剤の製造方法を提供することを目的とする。
The conventional anion adsorbents described in Patent Documents 1 to 4 have a powder shape, and there is a problem that the adsorption performance is remarkably lowered when the granule is formed into granules.
The present invention has been made in view of the above circumstances, and an anion adsorbent composition, a fibrous anion adsorbent, and a fiber that can be suitably used for producing a fibrous anion adsorbent having high adsorption performance An object of the present invention is to provide a method for producing an anionic adsorbent.
本発明は、以下の［１］〜［１１］を包含する。
［１］活性アルミナと、ポリマー成分とを含む陰イオン吸着剤組成物。
［２］前記ポリマー成分が、ポリエーテルスルホンである［１］に記載の陰イオン吸着剤組成物。
［３］ゼオライトを含む［１］又は［２］に記載の陰イオン吸着剤組成物。
［４］活性アルミナの含有量が、前記ポリマー成分１００質量部に対して５０質量部以上１０００質量部以下である、［１］〜［３］のいずれか１つに記載の陰イオン吸着剤組成物。
［５］鉄粉を含む［１］〜［４］のいずれか１つに記載の陰イオン吸着剤組成物。
［６］セリウムを含む［１］〜［５］のいずれか１つに記載の陰イオン吸着剤組成物。
［７］前記陰イオンがリン酸である［１］〜［６］のいずれか１つに記載の陰イオン吸着剤組成物。
［８］吸着繊維製造用である［１］〜［７］のいずれか１つに記載の陰イオン吸着剤組成物。
［９］活性アルミナと、ポリマー成分とを含む繊維状陰イオン吸着剤。
［１０］活性アルミナの含有量が、前記ポリマー成分１００質量部に対して５０質量部以上１０００質量部以下である、［９］に記載の繊維状陰イオン吸着剤。
［１１］［９］又は［１０］に記載の繊維状陰イオン吸着剤の製造方法であって、［１］〜［８］のいずれか１つに記載の陰イオン吸着剤組成物を調製する工程と、前記工程で得られた陰イオン吸着剤組成物を水中に押し出して繊維状に成形する工程と、を有する繊維状陰イオン吸着剤の製造方法。
The present invention includes the following [1] to [11].
[1] An anion adsorbent composition containing activated alumina and a polymer component.
[2] The anion adsorbent composition according to [1], wherein the polymer component is polyethersulfone.
[3] The anion adsorbent composition according to [1] or [2], which contains zeolite.
[4] The anion adsorbent composition according to any one of [1] to [3], wherein the content of activated alumina is 50 parts by mass or more and 1000 parts by mass or less with respect to 100 parts by mass of the polymer component. object.
[5] The anion adsorbent composition according to any one of [1] to [4], which contains iron powder.
[6] The anion adsorbent composition according to any one of [1] to [5], containing cerium.
[7] The anion adsorbent composition according to any one of [1] to [6], wherein the anion is phosphoric acid.
[8] The anion adsorbent composition according to any one of [1] to [7], which is for producing an adsorbed fiber.
[9] A fibrous anion adsorbent containing activated alumina and a polymer component.
[10] The fibrous anion adsorbent according to [9], wherein the content of activated alumina is 50 parts by mass or more and 1000 parts by mass or less with respect to 100 parts by mass of the polymer component.
[11] A method for producing a fibrous anion adsorbent according to [9] or [10], wherein the anion adsorbent composition according to any one of [1] to [8] is prepared. The manufacturing method of the fibrous anion adsorbent which has a process and the process of extruding the anion adsorbent composition obtained at the said process in water, and shape | molding it in a fiber form.
本発明によれば、吸着性能が高い繊維状陰イオン吸着剤の製造に好適に用いることができる陰イオン吸着剤組成物、繊維状陰イオン吸着剤、及び繊維状陰イオン吸着剤の製造方法を提供することができる。 According to the present invention, an anion adsorbent composition, a fibrous anion adsorbent, and a method for producing a fibrous anion adsorbent that can be suitably used for the production of a fibrous anion adsorbent with high adsorption performance. Can be provided.
＜陰イオン吸着剤組成物＞
本発明は、活性アルミナと、ポリマー成分とを含む陰イオン吸着剤組成物である。本発明の陰イオン吸着剤組成物は、繊維状、ビーズ状、シート状等所望の形状に成形することができ、中でも繊維状の吸着剤の製造に好適に用いることができる。また、フィルター基材に塗布することもできる。本発明によれば、セレン酸、ホウ酸、リン酸、亜ヒ酸等の陰イオンを吸着できる吸着剤を提供できる。
<Anion adsorbent composition>
The present invention is an anion adsorbent composition comprising activated alumina and a polymer component. The anion adsorbent composition of the present invention can be formed into a desired shape such as a fiber shape, a bead shape, or a sheet shape, and can be suitably used for producing a fibrous adsorbent. Moreover, it can also apply | coat to a filter base material. According to the present invention, an adsorbent capable of adsorbing anions such as selenic acid, boric acid, phosphoric acid and arsenous acid can be provided.
≪第１実施形態≫
本発明の陰イオン吸着剤組成物は、活性アルミナと、ポリマー成分とを含む。本実施形態の陰イオン吸着剤組成物は、ポリマー成分中に活性アルミナが分散していることが好ましい。
<< First Embodiment >>
The anion adsorbent composition of the present invention contains activated alumina and a polymer component. In the anion adsorbent composition of the present embodiment, activated alumina is preferably dispersed in the polymer component.
・活性アルミナ
活性アルミナ（以下、「（Ａ）成分」と記載することがある）は、水酸化アルミニウムを含む活性アルミナ粒子である。活性アルミナ粒子は多孔構造をしている。このため本発明の陰イオン吸着剤組成物は、（Ａ）成分を含むことにより陰イオンを吸着することができる。
活性アルミナは、示性式がＡｌ２Ｏ３・ｘＨ２Ｏ（ｘは０以上３以下の値を取り得る）で表される多孔質フィラーである。活性アルミナの表面の構造は、アモルファス状のＡｌ２Ｏ３、γ―Ａｌ２Ｏ３、ρ−Ａｌ２Ｏ３、χ−Ａｌ２Ｏ３、ギブサイトあるいはバイヤライト状のＡｌ（ＯＨ）３、ベーマイト状のＡｌ２Ｏ３・Ｈ２Ｏなどの構造となっていることが好ましい。
Active Alumina Active alumina (hereinafter sometimes referred to as “component (A)”) is activated alumina particles containing aluminum hydroxide. The activated alumina particles have a porous structure. For this reason, the anion adsorbent composition of this invention can adsorb | suck an anion by including (A) component.
Activated alumina is a porous filler whose formula is expressed by Al 2 O 3 × xH 2 O (x can take a value of 0 or more and 3 or less). The surface structure of the activated alumina is amorphous Al 2 O 3 , γ-Al 2 O 3 , ρ-Al 2 O 3 , χ-Al 2 O 3 , gibbsite or bayerite Al (OH) 3 , boehmite. It is preferable that the structure has a shape of Al 2 O 3 .H 2 O or the like.
・ポリマー成分
ポリマー成分（以下、「（Ｂ）成分」と記載することがある）は、ポリエーテルスルホン、ポリスルホン、６，６−ナイロン、６−ナイロン、ポリアクリロニトリル、ポリスチレンスルホン酸、酢酸セルロース、ポリビニルアルコール等が挙げられる。なかでも、繊維状に成形した場合に成形性が良好であり、さらに繊維の強度を向上させることができることからポリエーテルスルホンが好ましい。
Polymer component The polymer component (hereinafter sometimes referred to as “component (B)”) is polyethersulfone, polysulfone, 6,6-nylon, 6-nylon, polyacrylonitrile, polystyrene sulfonic acid, cellulose acetate, polyvinyl Alcohol etc. are mentioned. Among these, polyethersulfone is preferable because it has good moldability when formed into a fiber and can further improve the strength of the fiber.
≪第２実施形態≫
本発明の陰イオン吸着剤組成物は、上記（Ａ）成分、（Ｂ）成分に加え、ゼオライト（以下、「（Ｃ）成分」と記載することがある）を含むことが好ましい。（Ｃ）成分を含むことにより、吸着剤を製造した場合に吸着剤の親水性が向上し、水中の吸着対象物質に対する吸着性能が向上する。
<< Second Embodiment >>
The anion adsorbent composition of the present invention preferably contains zeolite (hereinafter sometimes referred to as “component (C)”) in addition to the components (A) and (B). By including the component (C), when the adsorbent is produced, the hydrophilicity of the adsorbent is improved, and the adsorption performance for the adsorption target substance in water is improved.
≪第３実施形態≫
本発明の陰イオン吸着剤組成物は、上記（Ａ）成分、（Ｂ）成分に加え、鉄粉（以下、「（Ｄ）成分」と記載することがある）を含むことが好ましい。陰イオン吸着剤組成物が鉄粉を含むことにより、磁力により容易に吸着剤を回収できるため好ましい。また、磁力により吸着剤を対流させることもできる。
«Third embodiment»
The anion adsorbent composition of the present invention preferably contains iron powder (hereinafter sometimes referred to as “component (D)”) in addition to the components (A) and (B). It is preferable that the anion adsorbent composition contains iron powder because the adsorbent can be easily recovered by magnetic force. Also, the adsorbent can be convected by magnetic force.
≪第４実施形態≫
本発明の陰イオン吸着剤組成物は、上記（Ａ）成分、（Ｂ）成分に加え、セリウム（以下、「（Ｅ）成分」と記載することがある）を含むことが好ましい。（Ｅ）成分を含むことにより、被処理水中に存在する低濃度の亜ヒ酸を吸着することができる。また、亜ヒ酸と吸着挙動が類似するセレン酸を好適に吸着することができる。
<< Fourth Embodiment >>
The anion adsorbent composition of the present invention preferably contains cerium (hereinafter sometimes referred to as “(E) component”) in addition to the components (A) and (B). By containing the component (E), low-concentration arsenous acid present in the water to be treated can be adsorbed. In addition, selenic acid having an adsorption behavior similar to that of arsenous acid can be suitably adsorbed.
≪第５実施形態≫
本発明の陰イオン吸着剤組成物は、陰イオンとしてセレン酸、ホウ酸、リン酸、亜ヒ酸を好適に吸着することができるが、中でもリン酸吸着用、亜ヒ酸吸着用、セレン酸吸着用であることが好ましく、リン酸吸着用又は亜ヒ酸吸着用であることがより好ましく、リン酸吸着用であることが特に好ましい。
«Fifth embodiment»
The anion adsorbent composition of the present invention can suitably adsorb selenic acid, boric acid, phosphoric acid, and arsenous acid as anions. Among them, phosphoric acid adsorption, arsenous acid adsorption, selenic acid It is preferably for adsorption, more preferably for phosphoric acid adsorption or arsenous acid adsorption, and particularly preferably for phosphoric acid adsorption.
≪第６実施形態≫
本発明の陰イオン吸着剤組成物は、吸着繊維製造用であることが好ましい。本発明の陰イオン吸着剤組成物は、吸着成分が有機溶媒に溶解しており、シリンジ等を用いて水中に押し出し、相転換させることにより、多孔構造の繊維状吸着剤を容易に成形できる。
<< Sixth Embodiment >>
The anion adsorbent composition of the present invention is preferably used for producing adsorbed fibers. In the anion adsorbent composition of the present invention, an adsorbing component is dissolved in an organic solvent, and a fibrous adsorbent having a porous structure can be easily formed by extruding into water using a syringe or the like and causing phase conversion.
・有機溶媒
本発明の陰イオン吸着剤組成物は、各成分を有機溶媒に溶解させた組成物であることが好ましい。有機溶媒（以下、「（Ｆ）成分」と記載することがある）としては、Ｎ−メチルピロリドン、蟻酸、ｎ−ブタノール、Ｎ，Ｎ−ジメチルホルムアミド、テトラヒドロフラン等が好ましい。
Organic solvent The anion adsorbent composition of the present invention is preferably a composition in which each component is dissolved in an organic solvent. As the organic solvent (hereinafter sometimes referred to as “component (F)”), N-methylpyrrolidone, formic acid, n-butanol, N, N-dimethylformamide, tetrahydrofuran and the like are preferable.
・各成分の配合比
本発明の陰イオン吸着剤組成物が前記（Ａ）成分と（Ｂ）成分とを含む場合、（Ａ）成分の含有量は、（Ｂ）成分１００質量部に対して、５０質量部以上が好ましく、１５０質量部以上がより好ましく、２００質量部以上が特に好ましい。また、１０００質量部以下が好ましく、６００質量部以下がより好ましく、５５０質量部以下が特に好ましい。
上記上限値と下限値は任意に組み合わせることができる。本実施形態においては、（Ａ）成分の含有量が上記下限値以上であることにより、十分な吸着性能を付与できる。また、（Ａ）成分の含有量が上記上限値以下であることにより、例えば繊維状に成形する場合の成形性を良好なものとすることができると推察される。
-Mixing ratio of each component When the anion adsorbent composition of the present invention includes the component (A) and the component (B), the content of the component (A) is based on 100 parts by mass of the component (B). 50 parts by mass or more, preferably 150 parts by mass or more, more preferably 200 parts by mass or more. Moreover, 1000 mass parts or less are preferable, 600 mass parts or less are more preferable, and 550 mass parts or less are especially preferable.
The upper limit value and the lower limit value can be arbitrarily combined. In this embodiment, sufficient adsorption performance can be provided because content of (A) component is more than the said lower limit. Moreover, when content of (A) component is below the said upper limit, it is guessed that the moldability in the case of shape | molding, for example in a fiber form can be made favorable.
本発明の陰イオン吸着剤組成物が前記（Ａ）成分と（Ｂ）成分と（Ｃ）成分とを含む場合、（Ｃ）成分の含有量は、（Ｂ）成分１００質量部に対して５０質量部以上が好ましく、８０質量部以上がより好ましく、１００質量部以上が特に好ましい。また、２５０質量部以下が好ましく、２００質量部以下がより好ましく、１８０質量部以下が特に好ましい。上記上限値と下限値は任意に組み合わせることができる。
（Ｃ）成分の配合量が上記の範囲であると、陰イオン吸着剤を成形した場合に、陰イオン吸着剤の親水性が向上し、通水性に優れた吸着剤を提供できると推察される。
When the anion adsorbent composition of the present invention includes the component (A), the component (B), and the component (C), the content of the component (C) is 50 with respect to 100 parts by mass of the component (B). It is preferably at least 80 parts by mass, more preferably at least 80 parts by mass, particularly preferably at least 100 parts by mass. Moreover, 250 mass parts or less are preferable, 200 mass parts or less are more preferable, and 180 mass parts or less are especially preferable. The upper limit value and the lower limit value can be arbitrarily combined.
When the amount of component (C) is in the above range, it is surmised that when an anion adsorbent is molded, the hydrophilicity of the anion adsorbent is improved and an adsorbent excellent in water permeability can be provided. .
本発明の陰イオン吸着剤組成物が前記（Ａ）成分と（Ｂ）成分と（Ｄ）成分とを含む場合、（Ｄ）成分の含有量は、（Ｂ）成分１００質量部に対して１質量部以上が好ましく、２質量部以上がより好ましく、３質量部以上が特に好ましい。また、１０質量部以下が好ましく、９質量部以下がより好ましく、８質量部以下が特に好ましい。上記上限値と下限値は任意に組み合わせることができる。
（Ｄ）成分の配合量が上記の範囲であると、陰イオン吸着剤を成形した場合に、磁力による回収が容易な吸着剤を提供できると推察される。
When the anion adsorbent composition of the present invention includes the component (A), the component (B), and the component (D), the content of the component (D) is 1 with respect to 100 parts by mass of the component (B). Part by mass or more is preferable, 2 parts by mass or more is more preferable, and 3 parts by mass or more is particularly preferable. Moreover, 10 mass parts or less are preferable, 9 mass parts or less are more preferable, and 8 mass parts or less are especially preferable. The upper limit value and the lower limit value can be arbitrarily combined.
When the blending amount of the component (D) is in the above range, it is presumed that an adsorbent that can be easily recovered by magnetic force can be provided when an anion adsorbent is molded.
本発明の陰イオン吸着剤組成物が前記（Ａ）成分と（Ｂ）成分と（Ｅ）成分とを含む場合、（Ｅ）成分の含有量は、（Ｂ）成分１００質量部に対して１０質量部以上が好ましく、２０質量部以上がより好ましく、３０質量部以上が特に好ましい。また、１００質量部以下が好ましく、９０質量部以下がより好ましく、８０質量部以下が特に好ましい。上記上限値と下限値は任意に組み合わせることができる。
（Ｅ）成分の配合量が上記の範囲であると、亜ヒ酸やセレン酸に対する吸着性能が高い吸着剤を提供できると推察される。
When the anion adsorbent composition of the present invention includes the component (A), the component (B), and the component (E), the content of the component (E) is 10 with respect to 100 parts by mass of the component (B). It is preferably at least part by mass, more preferably at least 20 parts by mass, particularly preferably at least 30 parts by mass. Moreover, 100 mass parts or less are preferable, 90 mass parts or less are more preferable, and 80 mass parts or less are especially preferable. The upper limit value and the lower limit value can be arbitrarily combined.
(E) It is guessed that the compounding quantity of a component can provide an adsorbent with high adsorption performance with respect to arsenous acid or a selenic acid as it is said range.
＜繊維状陰イオン吸着剤＞
本発明の繊維状陰イオン吸着剤は、活性アルミナと、ポリマー成分とを含む。
本発明の繊維状陰イオン吸着剤は、前記本発明の陰イオン吸着剤組成物を用いて製造される。本発明の繊維状陰イオン吸着剤が含有する各成分、即ち、前記（Ａ）成分、（Ｂ）成分、任意の（Ｃ）成分〜（Ｆ）成分に関する説明及びこれらの配合比に関しては、前記同様である。
<Fibrous anion adsorbent>
The fibrous anion adsorbent of the present invention contains activated alumina and a polymer component.
The fibrous anion adsorbent of the present invention is produced using the anion adsorbent composition of the present invention. Regarding the components contained in the fibrous anion adsorbent of the present invention, that is, the above-described (A) component, (B) component, optional (C) component to (F) component, and the blending ratio thereof, It is the same.
本発明の繊維状陰イオン吸着剤は、繊維に微細孔が形成された構造となっており、通水性が良好であるとともに、水に溶解した陰イオンを極めて効率的に吸着することができる。
本発明の繊維状陰イオン吸着剤の繊維径は、吸着対象や吸着剤の設置場所等によって適宜調整すればよいが、例えば下限値は０．１ｍｍ以上が好ましく、０．２ｍｍ以上が好ましく、０．２５ｍｍ以上が特に好ましい。上限値は、１．０ｍｍ以下が好ましく、０．９ｍｍ以下がより好ましく、０．８ｍｍ以下が特に好ましい。
繊維径が上記下限値以上であると、繊維の表面積が大きくなり、吸着サイトが増加するため吸着性能が向上するため好ましい。また繊維径が上記上限値以下であると、繊維状吸着剤の強度が向上し、例えば流速の早い水路等に設置した場合にも繊維状陰イオン吸着剤が水圧に負けて流出することを防止できる。
The fibrous anion adsorbent of the present invention has a structure in which fine pores are formed in the fiber, has good water permeability, and can adsorb anions dissolved in water very efficiently.
The fiber diameter of the fibrous anion adsorbent of the present invention may be appropriately adjusted depending on the object to be adsorbed, the installation location of the adsorbent, etc. For example, the lower limit is preferably 0.1 mm or more, preferably 0.2 mm or more, 0 .25 mm or more is particularly preferable. The upper limit is preferably 1.0 mm or less, more preferably 0.9 mm or less, and particularly preferably 0.8 mm or less.
It is preferable for the fiber diameter to be equal to or greater than the above lower limit value because the surface area of the fiber is increased and the adsorption sites are increased so that the adsorption performance is improved. Also, when the fiber diameter is below the above upper limit, the strength of the fibrous adsorbent is improved and, for example, the fibrous anion adsorbent is prevented from flowing out under water pressure even when installed in a water channel with a high flow rate. it can.
本発明において、繊維状吸着剤の繊維径が０．５ｍｍ以上であると、例えば５００時間程度の長期間にわたり、吸着性能を発揮することもできる。長期間に渡って吸着性能を発揮できる観点からは、繊維径は０．５ｍｍ以上が好ましく、０．５５ｍｍ以上がより好ましい。また、上限値は１．５ｍｍ以下が好ましく、１．２ｍｍ以下がより好ましい。 In the present invention, when the fiber diameter of the fibrous adsorbent is 0.5 mm or more, the adsorption performance can be exhibited over a long period of time, for example, about 500 hours. The fiber diameter is preferably 0.5 mm or more, more preferably 0.55 mm or more from the viewpoint of exhibiting adsorption performance over a long period of time. The upper limit is preferably 1.5 mm or less, and more preferably 1.2 mm or less.
本発明の繊維状陰イオン吸着剤は、被処理水中に存在する低濃度の亜ヒ酸を吸着することができる観点から、繊維の表面がセリウムでコーティングされていることが好ましい。
セリウムコーティングを施す繊維状陰イオン吸着剤は、前記（Ａ）成分、（Ｂ）成分、（Ｅ）成分、（Ｆ）成分と、任意の（Ｃ）成分、（Ｄ）成分を含む陰イオン吸着剤組成物を調製して、これを水中に押し出すことにより成形することにより製造できる。
また、前記（Ａ）成分、（Ｂ）成分、（Ｆ）成分と、任意の（Ｃ）成分、（Ｄ）成分を含む陰イオン吸着剤組成物を調製して繊維状に成形し、該繊維を常法によりセリウムでコーティングしてもよい。
The fibrous anion adsorbent of the present invention preferably has a fiber surface coated with cerium from the viewpoint of adsorbing a low concentration of arsenous acid present in the water to be treated.
The fibrous anion adsorbent to which the cerium coating is applied is an anion adsorption containing the component (A), the component (B), the component (E), the component (F), the optional component (C), and component (D). It can manufacture by preparing an agent composition and shape | molding by extruding this in water.
In addition, an anion adsorbent composition containing the component (A), component (B), component (F), and optional component (C), component (D) is prepared and formed into a fiber, and the fiber May be coated with cerium by a conventional method.
＜繊維状陰イオン吸着剤の製造方法＞
本発明の繊維状陰イオン吸着剤の製造方法は、前記本発明の陰イオン吸着剤組成物を調製する工程（以下、「工程１」と記載する）と、前記工程で得られた陰イオン吸着剤組成物を水中に押し出して繊維状に成形する工程（以下、「工程１」と記載する）と、を有する。
<Method for producing fibrous anion adsorbent>
The method for producing a fibrous anion adsorbent of the present invention comprises a step of preparing the anion adsorbent composition of the present invention (hereinafter referred to as “step 1”) and an anion adsorption obtained in the step. A step of extruding the agent composition into water to form a fiber (hereinafter referred to as “step 1”).
［工程１］
本工程は、上記（Ａ）成分及び（Ｂ）成分、さらに任意の（Ｃ）成分〜（Ｅ）成分を、溶媒に溶解し、陰イオン吸着剤組成物を調製する工程である。本工程においては、ポリマー成分の溶解性が向上する観点から、３０℃〜１００℃に溶媒を加熱することが好ましい。
[Step 1]
This step is a step of preparing the anion adsorbent composition by dissolving the components (A) and (B), and further any of the components (C) to (E) in a solvent. In this step, it is preferable to heat the solvent to 30 ° C. to 100 ° C. from the viewpoint of improving the solubility of the polymer component.
［工程２］
本工程は、前記工程で得られた陰イオン吸着剤組成物を水中に押し出して繊維状に成形する工程である。射出に用いられる水の温度を５０℃前後とすることにより、溶媒成分が溶出し、多孔構造の繊維を形成することができる。
[Step 2]
This step is a step in which the anion adsorbent composition obtained in the above step is extruded into water and shaped into a fiber. By setting the temperature of the water used for injection to around 50 ° C., the solvent component is eluted and a porous fiber can be formed.
＜水処理装置＞
本発明の陰イオン吸着剤を用いた水処理装置の一例について、図１を用いて説明する。図１に示す水処理装置１は、貯水槽１０とノッチタンク２０とからなる。被処理水は流入水Ｗ０として貯水槽１０に流入し、ポンプ１１によってノッチタンク２０に送水（図１中のＷ１）される。ノッチタンク２０は流入側仕切り材２１と流出側仕切り材２２とを備えている。繊維状に成形した本発明の陰イオン吸着剤２３は、流入側仕切り材２１と流出側仕切り材２２との間に配置し、図１中の破線で示す経路で通水する間に陰イオン吸着剤２３に接触することにより、陰イオン成分が吸着・除去される。その後、排水Ｗ２として排出される。
陰イオン吸着剤２３は、繊維状に成形した陰イオン吸着剤を例えばネットに入れた状態で設置することが好ましい。図１中は、ネットに入れた陰イオン吸着剤を４つ設置する例を記載しているが、本実施形態はこれに限定されず、陰イオン吸着剤を設置する水処理設備やタンクの形状によって適宜設計変更が可能である。
<Water treatment device>
An example of the water treatment apparatus using the anion adsorbent of the present invention will be described with reference to FIG. A water treatment apparatus 1 shown in FIG. 1 includes a
The
以下、実施例により本発明をより具体的に説明するが、本発明は以下の実施例に限定されるものではない。 EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to a following example.
＜吸着剤組成物の調製＞
ポリマー成分、活性アルミナ、その他表１に示す各成分を、表１に示す配合比で混合し、実施例１〜１１の吸着剤組成物を調製した。
<Preparation of adsorbent composition>
Polymer components, activated alumina, and other components shown in Table 1 were mixed at the compounding ratio shown in Table 1 to prepare adsorbent compositions of Examples 1-11.
＜吸着剤の製造＞
実施例１〜５、１０、１１の吸着剤組成物を用いて、繊維状の吸着剤を製造した。実施例１〜５、１０、１１の各吸着剤組成物をシリンジに入れ、室温で、シリンジの先を水中に入れた状態でシリンジの先から吸着剤組成物を水中に押し出し、水中に繊維を形成した。製造した繊維の繊維径は、０．６ｍｍであった。
実施例６〜９の吸着剤組成物は、溶媒成分を除去した粉末状の吸着剤とした。
<Manufacture of adsorbent>
Fibrous adsorbents were produced using the adsorbent compositions of Examples 1 to 5, 10, and 11. Each of the adsorbent compositions of Examples 1 to 5, 10, and 11 is put into a syringe, and at room temperature, the adsorbent composition is pushed out from the tip of the syringe with the tip of the syringe in water, and the fibers are put into the water. Formed. The fiber diameter of the manufactured fiber was 0.6 mm.
The adsorbent compositions of Examples 6 to 9 were powdered adsorbents from which the solvent component was removed.
≪吸着性能評価≫
実施例１〜１１、比較例１の吸着剤について、リン酸（ＰＯ４ ３−）に対する吸着性能を評価した。
リン酸の吸着性能（ｍｇ／ｇ）とは、リン酸を含む水溶液に、吸着剤を２４時間浸漬させた際に、吸着剤が１ｇ当たり吸着するリン酸の量をいう。
具体的には、ｐＨ６．５に調整したＮａＨ２ＰＯ４溶液（リン酸換算で５０ｐｐｍ）１００ｍＬに、実施例１〜１１の各繊維状吸着剤０．２ｇを添加し、振とうさせた後、２４時間後にフィルターで濾過し、濾液水中の残留リン酸濃度を測定することによってリン酸吸着量を求めた。
≪Adsorption performance evaluation≫
For the adsorbents of Examples 1 to 11 and Comparative Example 1, the adsorption performance for phosphoric acid (PO 4 3− ) was evaluated.
Phosphoric acid adsorption performance (mg / g) refers to the amount of phosphoric acid adsorbed per gram when the adsorbent is immersed in an aqueous solution containing phosphoric acid for 24 hours.
Specifically, 0.2 g of each fibrous adsorbent of Examples 1 to 11 was added to 100 mL of NaH 2 PO 4 solution (50 ppm in terms of phosphoric acid) adjusted to pH 6.5 and shaken. After 24 hours, the solution was filtered through a filter, and the phosphoric acid adsorption amount was determined by measuring the residual phosphoric acid concentration in the filtrate water.
表１中、各記号は以下の材料を意味する。［ ］内の数値は配合量（質量部）である。
（Ａ）−１；活性アルミナ（ナカライテスク社製、活性アルミナ２００）。
（Ｂ）−１；ポリエーテルスルホン（ＢＡＳＦ社製、ウルトラソーンＳ）。
（Ｃ）−１；ゼオライト（日東粉化商事、ゼオライト）。
（Ｄ）−１；鉄粉（三井金属工業社製、フェライト）。
（Ｅ）−１；セリウム（ナカライテスク社製、セリウム）。
（Ｆ）−１；Ｎ−メチルピロリドン（ナカライテスク社製）。
市販の吸着剤 ；市販のカルシウム含有リン吸着剤。
In Table 1, each symbol means the following material. The numerical value in [] is a compounding amount (part by mass).
(A) -1; activated alumina (manufactured by Nacalai Tesque, activated alumina 200).
(B) -1: Polyethersulfone (manufactured by BASF, Ultrathorn S).
(C) -1: Zeolite (Nitto Flourishing Shoji, zeolite).
(D) -1; Iron powder (Mitsui Metal Industries, Ltd., ferrite).
(E) -1; Cerium (Nacalai Tesque, Cerium).
(F) -1; N-methylpyrrolidone (manufactured by Nacalai Tesque).
Commercially available adsorbent; commercially available calcium-containing phosphorus adsorbent.
上記結果に記載のとおり、本発明を適用した実施例１〜１１の吸着剤は、リン酸の吸着性能が市販の吸着剤に比べて５倍以上も高かった。
表１に示す結果の通り、活性アルミナ成分の配合量を多くすると吸着性能は向上した。また、実施例４と実施例１０とを比較すると、活性アルミナの量が同じであるが、鉄粉を配合した実施例１０はリン酸に対する吸着性能が向上していた。鉄粉を配合すると、リン酸に対する吸着性能が向上することが分かった。
さらに、実施例４と実施例１１とを比較すると、活性アルミナの量は同じであるが、セリウムを配合した実施例１１はリン酸に対する吸着性能が向上していた。セリウムを配合すると、リン酸に対する吸着性能は低下することなく向上した。このことから、セリウムを添加した場合には亜ヒ酸やセレン酸に対する吸着性能をも発揮できると推察される。
As described in the above results, the adsorbents of Examples 1 to 11 to which the present invention was applied had a phosphoric acid adsorption performance five times higher than that of a commercially available adsorbent.
As the results shown in Table 1, the adsorption performance improved when the amount of the active alumina component was increased. Moreover, when Example 4 and Example 10 are compared, although the quantity of activated alumina is the same, Example 10 which mix | blended iron powder had improved the adsorption | suction performance with respect to phosphoric acid. It was found that when iron powder was added, the adsorption performance for phosphoric acid was improved.
Furthermore, when Example 4 and Example 11 were compared, the amount of activated alumina was the same, but Example 11 containing cerium had improved adsorption performance for phosphoric acid. When cerium was added, the adsorption performance for phosphoric acid was improved without lowering. From this, when cerium is added, it is guessed that the adsorption performance with respect to arsenous acid or selenic acid can also be exhibited.
≪成形性評価≫
繊維状の吸着剤を製造する際の成形性について、下記の評価基準に従って評価した。その結果を表２に記載する。
・評価基準
◎；容易に押し出せる。
○；押し出せる。
△；押し出しにくい。
×；押し出せない（繊維状を呈していない）。
≪Formability evaluation≫
The moldability when producing the fibrous adsorbent was evaluated according to the following evaluation criteria. The results are listed in Table 2.
・ Evaluation criteria ◎; Extrude easily.
○: Can be extruded.
Δ: difficult to extrude.
X: It cannot extrude (it does not exhibit fibrous form).
表２に記載の通り、実施例１〜４、１０〜１１は繊維状に成形する際の成形性が良好であった。実施例５〜９は、繊維状に成形することは困難であったものの、粉末状の吸着剤としては充分に使用できる状態であった。 As shown in Table 2, Examples 1-4 and 10-11 had good moldability when formed into a fiber. In Examples 5 to 9, although it was difficult to form into a fibrous form, it was in a state where it could be sufficiently used as a powdery adsorbent.
≪長期間のリン酸吸着試験≫
実施例４の繊維状吸着剤の繊維径（０．６ｍｍ）を、０．３ｍｍと、１．０ｍｍに変更した繊維状吸着剤を製造し、長期間のリン酸吸着試験を行った。
実施例４（繊維径；０．３ｍｍ、０．６ｍｍ、１．０ｍｍ）の各繊維径の吸着剤それぞれについて、リン酸（ＰＯ４ ３−）に対する長期間の吸着性能を評価した。
リン酸の長期間の吸着性能（ｍｇ／ｇ）とは、リン酸を含む水溶液に、吸着剤を４００時間以上浸漬させた際に、吸着剤が１ｇ当たり吸着するリン酸の量をいう。
具体的には、ｐＨ６．５に調整したＮａＨ２ＰＯ４溶液（リン酸換算で５０ｐｐｍ）１００ｍＬに、実施例４（繊維径；０．３ｍｍ、０．６ｍｍ、１．０ｍｍ）の各繊維径の吸着剤それぞれ０．２ｇを添加し、振とうさせ、フィルターで濾過し、濾液水中の残留リン酸濃度を経時的に測定し、リン酸吸着量を求めた。
その結果を図２に記載する。
≪Long-term phosphate adsorption test≫
A fibrous adsorbent in which the fiber diameter (0.6 mm) of the fibrous adsorbent of Example 4 was changed to 0.3 mm and 1.0 mm was manufactured, and a long-term phosphoric acid adsorption test was performed.
For each of the adsorbents of each fiber diameter of Example 4 (fiber diameter: 0.3 mm, 0.6 mm, 1.0 mm), the long-term adsorption performance for phosphoric acid (PO 4 3− ) was evaluated.
The long-term adsorption performance (mg / g) of phosphoric acid refers to the amount of phosphoric acid adsorbed per gram when the adsorbent is immersed in an aqueous solution containing phosphoric acid for 400 hours or more.
Specifically, each fiber diameter of Example 4 (fiber diameter; 0.3 mm, 0.6 mm, 1.0 mm) was added to 100 mL of NaH 2 PO 4 solution (50 ppm in terms of phosphoric acid) adjusted to pH 6.5. 0.2 g of each adsorbent was added, shaken, filtered through a filter, the residual phosphoric acid concentration in the filtrate water was measured over time, and the phosphate adsorption amount was determined.
The results are shown in FIG.
図２に記載の結果の通り、繊維径が細い場合には、吸着性能は向上するものの、約１５０時間で吸着性能が飽和した。これに対し、繊維径を太くすると約４００時間に渡って吸着能力を発揮できることがわかった。 As shown in FIG. 2, when the fiber diameter is small, the adsorption performance is improved, but the adsorption performance is saturated in about 150 hours. On the other hand, it was found that if the fiber diameter is increased, the adsorption ability can be exhibited for about 400 hours.
実施例４（繊維径；０．３ｍｍ、０．６ｍｍ、１．０ｍｍ）の各繊維径の吸着剤と、市販の吸着剤（市販品２、３）をそれぞれ１００時間リン酸を含む水溶液に浸漬した場合の残留リン酸濃度を経時的に測定し、リン酸吸着量を求めた結果を図３に記載する。
ここで、「市販品２」とは「粒状吸着材」であり、「市販品３」は「粒状吸着材」である。
Each of the fiber diameter adsorbents of Example 4 (fiber diameter: 0.3 mm, 0.6 mm, 1.0 mm) and a commercially available adsorbent (commercial products 2, 3) were each immersed in an aqueous solution containing phosphoric acid for 100 hours. FIG. 3 shows the results of measuring the residual phosphoric acid concentration over time and determining the phosphate adsorption amount.
Here, “commercial product 2” is “particulate adsorbent”, and “commercial product 3” is “particulate adsorbent”.
図３に記載の結果の通り、市販品２及び市販品３の吸着剤は、そもそもリン酸に対する吸着量が低く、約２０時間程度で吸着性能が飽和してしまった。 As shown in the results shown in FIG. 3, the adsorbents of the commercial product 2 and the commercial product 3 originally had a low adsorption amount with respect to phosphoric acid, and the adsorption performance was saturated in about 20 hours.
上記結果に示した通り、本発明の陰イオン吸着剤組成物を用いて形成した吸着剤は、リン酸に対して高い吸着能力を有していた。リン酸に対して高い吸着能力を発揮できることから、セレン、ホウ素、ヒ素等の他の陰イオンに対しても高い吸着能力を発揮することが十分推察される。 As shown in the above results, the adsorbent formed using the anion adsorbent composition of the present invention had a high adsorption capacity for phosphoric acid. Since it can exhibit a high adsorption ability with respect to phosphoric acid, it is sufficiently guessed that it exhibits a high adsorption ability with respect to other anions such as selenium, boron, and arsenic.
さらに本発明の陰イオン吸着剤組成物は、繊維状に成形でき、長期間に渡って吸着性能を発揮できるという優れた効果を奏することがわかった。 Furthermore, it has been found that the anion adsorbent composition of the present invention has an excellent effect that it can be shaped into a fiber and can exhibit adsorption performance over a long period of time.
１：水処理装置、１０：貯水槽、１１：ポンプ、２０：ノッチタンク、２１：流入側仕切り材、２２：流出側仕切り材、２３：吸着剤、Ｗ０：流入水、Ｗ１：送水、Ｗ２：排水 1: water treatment device, 10: water tank, 11: pump, 20: notch tank, 21: inflow side partition material, 22: outflow side partition material, 23: adsorbent, W 0 : inflow water, W 1 : water supply, W 2 : Drainage
Claims (11)
前記有機溶媒の含有量は、前記ポリマー成分１００質量部に対して２３３．３質量部以上６５０質量部以下である、陰イオン吸着剤組成物。 Including activated alumina, a polymer component, and an organic solvent;
Content of the said organic solvent is an anion adsorbent composition which is 233.3 mass parts or more and 650 mass parts or less with respect to 100 mass parts of said polymer components .
請求項１〜８のいずれか１項に記載の陰イオン吸着剤組成物を調製する工程と、
前記工程で得られた陰イオン吸着剤組成物を水中に押し出して繊維状に成形する工程と、を有する繊維状陰イオン吸着剤の製造方法。 A method for producing a fibrous anion adsorbent according to claim 9 or 10,
Preparing an anion adsorbent composition according to any one of claims 1 to 8,
A method for producing a fibrous anion adsorbent, comprising extruding the anion adsorbent composition obtained in the above step into water to form a fiber.
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