JP2849706B2 - Adsorbent - Google Patents
AdsorbentInfo
- Publication number
- JP2849706B2 JP2849706B2 JP7316149A JP31614995A JP2849706B2 JP 2849706 B2 JP2849706 B2 JP 2849706B2 JP 7316149 A JP7316149 A JP 7316149A JP 31614995 A JP31614995 A JP 31614995A JP 2849706 B2 JP2849706 B2 JP 2849706B2
- Authority
- JP
- Japan
- Prior art keywords
- adsorbent
- activated carbon
- chitosan
- chitin
- substance
- 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.)
- Expired - Lifetime
Links
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は吸着剤に関するもの
である。[0001] The present invention relates to an adsorbent.
【0002】[0002]
【従来の技術】キチンは、カニやエビ等の甲殻類の有機
骨格物質であり、セルロースに類似した構造の窒素を含
む多糖である。このものは、廃棄物となったカニやエビ
の甲殻から回収されている。一方、キトサンは、キチン
を濃アルカリ水溶液中で加熱し、脱アセチル化すること
によって得られる塩基性多糖物質である。これらのキチ
ンやキトサンはキチン質物質と呼ばれ、健康食品成分と
して利用される他、凝集剤やクロマトグラフィー用充填
剤等として利用されている。一方、吸着剤を得るため
に、木材等のセルロース質物質を炭化することは広く行
われているが、キチンやキトサン等のキチン質物質を炭
化し、表面活性化して吸着剤とすることは知られていな
い。2. Description of the Related Art Chitin is an organic skeleton substance of crustaceans such as crabs and shrimps, and is a nitrogen-containing polysaccharide having a structure similar to cellulose. It is recovered from crab and shrimp shells that have become waste. On the other hand, chitosan is a basic polysaccharide substance obtained by heating and deacetylating chitin in a concentrated alkaline aqueous solution. These chitins and chitosans are called chitinous substances, and are used as ingredients for health foods, and are also used as flocculants and packings for chromatography. On the other hand, carbonization of cellulosic substances such as wood to obtain an adsorbent is widely performed, but it is not known that chitinous substances such as chitin and chitosan are carbonized and surface activated to form an adsorbent. Not been.
【0003】[0003]
【発明が解決しようとする課題】本発明は、セルロース
質物質から形成された活性炭よりもすぐれた吸着特性を
有する吸着剤を提供することをその課題とする。It is an object of the present invention to provide an adsorbent having better adsorption characteristics than activated carbon formed from cellulosic materials.
【0004】[0004]
【課題を解決するための手段】本発明者らは、前記課題
を解決すべく鋭意研究を重ねた結果、本発明を完成する
に至った。即ち、本発明によれば、キチン質物質の50
0〜1000℃炭化物を表面活性化して形成した活性炭
からなる吸着剤が提供される。Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have completed the present invention. That is, according to the present invention, 50 of chitinous substances
An adsorbent comprising activated carbon formed by surface-activating a carbide at 0 to 1000 ° C is provided.
【0005】[0005]
【発明の実施の形態】本発明において原料として用いる
キチン質物質(キチン及び/又はキトサン)は、カニや
エビの甲殻から回収されたものを利用し得る他、それら
の甲殻自体を原料とすることができる。甲殻自体を原料
とする場合には、それをそのまま又は破砕して炭化処理
すればよい。BEST MODE FOR CARRYING OUT THE INVENTION As a chitin substance (chitin and / or chitosan) used as a raw material in the present invention, a substance recovered from the shell of a crab or a shrimp can be used, or the shell itself can be used as a raw material. Can be. When the shell itself is used as a raw material, it may be carbonized as it is or crushed.
【0006】本発明で用いるキチン質物質からなる原料
は、粉末状、ペレット状、細片状、粗大粒子状、繊維
状、織布状等の種々の形状であることができる。繊維状
の原料は、キチン質物質を、いったん溶液状にし、これ
をノズルから繊維状で吐出させて固化することによって
得ることができる。織布状原料は、維状原料を布状に繊
成することによって得ることができる。The raw material comprising the chitinous substance used in the present invention can be in various shapes such as powder, pellet, flake, coarse particle, fiber, woven fabric and the like. The fibrous raw material can be obtained by once converting a chitinous substance into a solution, discharging the solution in a fibrous form from a nozzle, and solidifying it. The woven material can be obtained by fiberizing the fiber material into a cloth.
【0007】本発明の吸着剤を製造するには、キチン質
物質を炭化処理した後、表面活性化する。この場合の炭
化処理は、キチン質物質を、酸素濃度が実質的にゼロ%
の不活性ガス雰囲気中で、500〜1000℃、好まし
くは600〜900℃の温度で焼成することによって行
うことができる。不活性ガスとしては、窒素ガスが一般
的に用いられる。この炭化処理においては、キチン質物
質は、20〜32重量%、好ましくは20〜28重量%
の炭素収率で炭化物に変換される。[0007] To produce the adsorbent of the present invention, the chitinous substance is carbonized and then surface activated. In this case, the carbonization treatment converts the chitinous substance to an oxygen concentration of substantially zero%.
In an inert gas atmosphere at a temperature of 500 to 1000 ° C, preferably 600 to 900 ° C. As the inert gas, nitrogen gas is generally used. In this carbonization treatment, the chitinous substance is 20 to 32% by weight, preferably 20 to 28% by weight.
To a carbide with a carbon yield of
【0008】キチン質物質の炭化終了後に、得られた炭
化物に水蒸気や二酸化炭素、酸素等の炭素に対して反応
性を有するガスを反応させることにより、表面が活性化
された活性炭とすることができる。この場合の活性化処
理は、通常、800〜1100℃の温度で行われる。After the carbonization of the chitinous substance is completed, a gas having reactivity with carbon such as water vapor, carbon dioxide, or oxygen is reacted with the obtained carbonized carbon to obtain activated carbon having an activated surface. it can. The activation process in this case is usually performed at a temperature of 800 to 1100 ° C.
【0009】[0009]
【実施例】次に本発明を実施例によりさらに詳細に説明
する。Next, the present invention will be described in more detail with reference to examples.
【0010】参考例1 キチン粉末を窒素を流しながら、温度800℃まで加熱
し、この温度に30分間保持した。その結果、収率約2
2wt%で炭化物が得られた。この炭化物について、2
5℃、1気圧における二酸化炭素吸着量を測定して、代
表的なガス吸着用セルロース系活性炭G2C(武田薬
品)と比較した。二酸化炭素濃度10vol%における
キチン炭化物の二酸化炭素吸着量は32.2mg/g
で、G2Cの23.4mg/gを大きく上まわった。な
お、キチンそのものの二酸化炭素吸着量は同条件下で、
11.9mg/gで、キチンを炭化することにより、高
性能の吸着剤に転化できることがわかった。Reference Example 1 A chitin powder was heated to a temperature of 800 ° C. while flowing nitrogen, and kept at this temperature for 30 minutes. As a result, the yield was about 2
Carbide was obtained at 2 wt%. For this carbide, 2
The amount of carbon dioxide adsorbed at 5 ° C. and 1 atm was measured and compared with a typical cell-based activated carbon for gas adsorption G 2 C (Takeda Pharmaceutical). The carbon dioxide adsorption amount of chitin carbide at a carbon dioxide concentration of 10 vol% is 32.2 mg / g.
Significantly exceeded G 2 C of 23.4 mg / g. In addition, the carbon dioxide adsorption amount of chitin itself under the same conditions,
It was found that by carbonizing chitin at 11.9 mg / g, it could be converted to a high-performance adsorbent.
【0011】参考例2 参考例1と同様に、キトサンを窒素気流中において、8
00℃で炭化した。炭化収率は約28%であった。キト
サンの25℃、1気圧、二酸化炭素濃度10%vol%
における二酸化炭素吸着量は3.3mg/gで、キトサ
ン炭化物の吸着量は38.3mg/gであった。キチン
と同様、キトサンの場合も炭化することにより、高性能
の吸着剤に転化することができた。Reference Example 2 In the same manner as in Reference Example 1, chitosan was treated with
Carbonized at 00 ° C. The carbonization yield was about 28%. Chitosan at 25 ° C, 1 atm, carbon dioxide concentration 10% vol%
Was 3.3 mg / g, and the adsorption amount of chitosan carbide was 38.3 mg / g. Like chitin, chitosan could be converted to a high-performance adsorbent by carbonization.
【0012】実施例1 キトサンの800℃炭化物を温度850℃で水蒸気と反
応(以下、賦活という)させることにより、活性炭を製
造した。送入水蒸気量は0.16g/hrで、水蒸気濃
度(窒素中)は6.8vol%とした。1時間水蒸気と
反応させたとき、収率70wt%で活性炭が得られた。
この活性炭の25℃、1気圧、二酸化炭素濃度10vo
l%における二酸化炭素吸着量は48.3mg/gで、
市販の代表的な活性炭G2Cの2倍以上の高吸着能の活
性炭であることがわかった。さらに、キトサンから製造
した活性炭についてフロン(HCFC−142b)の吸
着量を測定した。温度25℃、1気圧、フロン濃度29
8ppmにおけるキトサン活性炭のフロン吸着量は10
1.8mg/gで、G2Cの73.0mg/gのそれを
大きく上まわった。Example 1 Activated carbon was produced by reacting a carbide of chitosan at 800 ° C. with steam at a temperature of 850 ° C. (hereinafter referred to as activation). The amount of water vapor sent was 0.16 g / hr, and the water vapor concentration (in nitrogen) was 6.8 vol%. When reacted with steam for 1 hour, activated carbon was obtained with a yield of 70 wt%.
25 ℃ of this activated carbon, 1 atm, carbon dioxide concentration 10vo
The carbon dioxide adsorption amount at 1% is 48.3 mg / g,
It has been found that the activated carbon has a high adsorptivity twice as high as that of a commercially available activated carbon G 2 C. Furthermore, the activated carbon produced from chitosan was measured for the amount of adsorbed freon (HCFC-142b). Temperature 25 ° C, 1 atm, CFC concentration 29
Fluorocarbon adsorption of chitosan activated carbon at 8 ppm is 10
At 1.8 mg / g, it greatly exceeded that of 73.0 mg / g of G 2 C.
【0013】[0013]
【発明の効果】本発明の吸着剤は、従来のセルロース質
物質から形成された活性炭よりも高性能のものであり、
各種分野において有利に用いられる。The adsorbent of the present invention has higher performance than activated carbon formed from conventional cellulosic materials,
It is advantageously used in various fields.
Claims (1)
物を表面活性化して形成した活性炭からなる吸着剤。1. An adsorbent comprising activated carbon formed by surface-activating a charcoal of a chitinous substance at 500 to 1000 ° C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7316149A JP2849706B2 (en) | 1995-12-05 | 1995-12-05 | Adsorbent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7316149A JP2849706B2 (en) | 1995-12-05 | 1995-12-05 | Adsorbent |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09155186A JPH09155186A (en) | 1997-06-17 |
JP2849706B2 true JP2849706B2 (en) | 1999-01-27 |
Family
ID=18073826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7316149A Expired - Lifetime JP2849706B2 (en) | 1995-12-05 | 1995-12-05 | Adsorbent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2849706B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180017856A (en) * | 2016-08-11 | 2018-02-21 | 현대자동차주식회사 | Method for manufacturing activated carbon |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010094573A (en) * | 2000-03-31 | 2001-11-01 | 김동석 | Manufacturing method of crab shell - biosorbent for the removal of heavy metal ion from aquous solution |
JP4537699B2 (en) * | 2003-12-25 | 2010-09-01 | 日本エンバイロケミカルズ株式会社 | Activated carbon slurry transport method |
KR100846979B1 (en) * | 2007-03-12 | 2008-07-17 | 강릉대학교산학협력단 | Removal device for stink gas and volatile organic components |
PL222535B1 (en) * | 2011-11-14 | 2016-08-31 | Univ Mikołaja Kopernika W Toruniu | Method for producing nanoporous activated carbons with a high nitrogen content |
CN103566901A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Pine nut shell gas-phase adsorption active carbon and preparation method thereof |
CN109090551B (en) * | 2018-09-14 | 2021-09-10 | 舟山赛莱特海洋科技有限公司 | Mussel seasoning and preparation method thereof |
CN116948472A (en) * | 2023-08-23 | 2023-10-27 | 浙江贝得厨房用品有限公司 | Non-stick pan coating and preparation method thereof |
-
1995
- 1995-12-05 JP JP7316149A patent/JP2849706B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180017856A (en) * | 2016-08-11 | 2018-02-21 | 현대자동차주식회사 | Method for manufacturing activated carbon |
KR101927177B1 (en) * | 2016-08-11 | 2019-03-12 | 현대자동차 주식회사 | Method for manufacturing activated carbon |
Also Published As
Publication number | Publication date |
---|---|
JPH09155186A (en) | 1997-06-17 |
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