JPS62213847A - Cellulose fiber having anion exchange capacity - Google Patents
Cellulose fiber having anion exchange capacityInfo
- Publication number
- JPS62213847A JPS62213847A JP61056507A JP5650786A JPS62213847A JP S62213847 A JPS62213847 A JP S62213847A JP 61056507 A JP61056507 A JP 61056507A JP 5650786 A JP5650786 A JP 5650786A JP S62213847 A JPS62213847 A JP S62213847A
- Authority
- JP
- Japan
- Prior art keywords
- dye
- fiber
- adsorbed
- anion exchange
- adsorption
- 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
- 229920003043 Cellulose fiber Polymers 0.000 title claims abstract description 8
- 238000005349 anion exchange Methods 0.000 title claims description 12
- 239000000975 dye Substances 0.000 claims abstract description 30
- 239000003513 alkali Substances 0.000 claims abstract description 9
- 125000000129 anionic group Chemical group 0.000 claims abstract description 9
- 125000003277 amino group Chemical group 0.000 claims abstract description 7
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 6
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 230000008707 rearrangement Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 abstract description 11
- 229920000742 Cotton Polymers 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000004043 dyeing Methods 0.000 abstract description 6
- 239000000985 reactive dye Substances 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 6
- 239000002351 wastewater Substances 0.000 abstract description 6
- 238000007167 Hofmann rearrangement reaction Methods 0.000 abstract description 4
- 238000005342 ion exchange Methods 0.000 abstract description 4
- 229920006395 saturated elastomer Polymers 0.000 abstract description 4
- 125000003368 amide group Chemical group 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 150000000703 Cerium Chemical class 0.000 abstract description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005708 Sodium hypochlorite Substances 0.000 abstract description 2
- 239000003054 catalyst Substances 0.000 abstract description 2
- 238000010559 graft polymerization reaction Methods 0.000 abstract description 2
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000003795 desorption Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000980 acid dye Substances 0.000 description 2
- 239000000982 direct dye Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- AFOSIXZFDONLBT-UHFFFAOYSA-N divinyl sulfone Chemical compound C=CS(=O)(=O)C=C AFOSIXZFDONLBT-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、酸性染料、直接染料及び反応染料などのア
ニオン系染料に対し強固な親和性を有し、これらの水溶
液より染料を急速に吸着し、しかも吸着が飽和した場合
、アルカリ処理によって吸着物質を脱着することができ
るアニオン交換能を有するセルロース繊維に関するもの
である。[Detailed Description of the Invention] The present invention has a strong affinity for anionic dyes such as acid dyes, direct dyes, and reactive dyes, rapidly adsorbs dyes from aqueous solutions of these dyes, and furthermore, the dyes have a strong affinity for anionic dyes such as acid dyes, direct dyes, and reactive dyes. The case relates to cellulose fibers with anion exchange ability that can desorb adsorbed substances by alkali treatment.
従来、各種染色排水中の染料を除去する目的に、活性炭
あるいはイオン交換樹脂などが使用されている。Activated carbon or ion exchange resins have conventionally been used to remove dyes from various dyeing wastewaters.
ところが、活性炭を吸着剤として使用した場合、その吸
着効率はすぐれているものの、吸着能力は、対象物質の
濃度によって左右され、また、吸着剤そのものが黒色で
あることから、染料の吸着挙動が観察しにくく、しかも
飽和吸着後の活性炭の再生は、完全乾燥の後の赤熱処理
によるものであり、そのためかなりの損失があることが
難点である。However, when activated carbon is used as an adsorbent, although its adsorption efficiency is excellent, the adsorption capacity depends on the concentration of the target substance, and since the adsorbent itself is black, it is difficult to observe the adsorption behavior of dyes. Moreover, the regeneration of activated carbon after saturated adsorption requires red heat treatment after complete drying, which causes considerable loss.
一方、イオン交換樹脂あるいは吸着樹脂を使用した場合
には、吸着能力が不十分である上、染料のみの溶液には
相応の吸着および脱着挙動を示すが、染色助剤として添
加された酢酸や硫酸ナトリウムその他の塩類が混入して
いる場合、これらの酸や塩類が憂先的に吸着されるため
、染料の吸着は大きく阻害されるのである。On the other hand, when ion exchange resins or adsorption resins are used, their adsorption capacity is insufficient, and solutions containing only dyes exhibit appropriate adsorption and desorption behavior, but acetic acid or sulfuric acid added as dyeing aids If sodium or other salts are mixed in, these acids and salts will be adsorbed prematurely, greatly inhibiting dye adsorption.
近年、河川汚濁防止対策の観点から、染色加工排水の脱
色処理のためには、前記、活性炭吸着をはじめ、オゾン
処理、塩素処理、凝集沈殿処理等数多くの方法が開発さ
れているが、低置で簡便な処理方法の出現が求められて
いる。In recent years, from the viewpoint of river pollution prevention measures, many methods have been developed for decolorizing dyeing processing wastewater, including the aforementioned activated carbon adsorption, ozone treatment, chlorination treatment, and coagulation sedimentation treatment. There is a need for a simple treatment method.
さらに、昨今、都区内の染色工場における最大の悩みは
、水道料が年々高騰することであり、いかにして工程の
節水を図るかについて、使用水（主として大量に発生す
る染色後の水洗水）を簡便な操作により再生利用する方
法の出現が期待されている。Furthermore, the biggest problem for dyeing factories in the Tokyo metropolitan area these days is that water charges are rising year by year. ) is expected to emerge with a simple operation.
発明者は、前記のような染色加工工場において大量に発
生する水洗排水中に溶存する未染着染料を吸着除去する
能力を備え、しかも、これら染料によって吸着剤が飽和
した場合に、簡単な操作によって吸着染料が脱着され、
再び吸着効果を発揮する特徴を有する繊維を調製するた
めに鋭意研究を重ねた結果、本発明に到達したものであ
る。The inventor has developed a system that has the ability to adsorb and remove undyed dyes dissolved in the washing waste water that is generated in large quantities in dye processing factories as described above, and that can be easily operated when the adsorbent is saturated with these dyes. The adsorbed dye is desorbed by
The present invention was achieved as a result of extensive research in order to prepare fibers that have the characteristics of exhibiting an adsorption effect again.
吸着担体として、繊維を選んだ理由は、担体内部への染
料の浸透が容易な素材であり、側鎖につげたイオン交換
基が有効に利用されることが期待されること、及び繊維
素材は形態が自由にとれ、用途に合わせて、糸、編物、
織物の形態で用いることがてきることである。また、カ
ラム通水の方法で使用する場合、！Ｉｆｔが白色である
ので、吸着の様子を観測し易く、繊維の親水性により均
一な吸着が期待できる。The reason why we chose fiber as the adsorption carrier is that it is a material that allows the dye to easily penetrate into the carrier, and that the ion exchange groups attached to the side chains are expected to be effectively utilized. It can take any form, depending on the purpose, such as yarn, knitted fabrics, etc.
It can be used in the form of textiles. Also, when using the column water flow method,! Since Ift is white, it is easy to observe the state of adsorption, and uniform adsorption can be expected due to the hydrophilic nature of the fibers.
本発明の方法は、綿素材にセリウム塩及び硝酸を触媒と
してアクリルアミドまたは、メタクリルアミドのグラフ
ト重合を行ない、続いて次亜塩素酸すトリウムどアルカ
リの佐用によってアミド基のホフマン転位を行ないアミ
ノ基を生成することによるイオン交換能を備えた繊維を
調製することとであり、このものは、前記反応染料染色
における水洗排水中に溶存する未染着染料を常温におい
て強固に吸着する性質を備え、しかも染料が飽和吸着さ
れた場合、少量の稀アルカリによって簡単に脱着が可能
であり、再び染料を吸着する能力を備えていることが特
徴である。しかも、その吸着能の回復率はほぼ１０ｏｚ
であり、何回も吸着及び脱着を繰り返すことができる極
めて特異な性質を備えている。The method of the present invention involves graft polymerizing acrylamide or methacrylamide onto a cotton material using a cerium salt and nitric acid as a catalyst, followed by Hofmann rearrangement of the amide group by using an alkali such as sodium hypochlorite to form an amino group. The purpose is to prepare a fiber with ion exchange ability by producing ion-exchange ability, which has the property of strongly adsorbing undyed dye dissolved in the water washing wastewater in the reactive dye dyeing process at room temperature. When the dye is saturated and adsorbed, it can be easily desorbed using a small amount of dilute alkali, and is characterized by the ability to adsorb the dye again. Moreover, the recovery rate of its adsorption capacity is approximately 10oz.
It has the extremely unique property of being able to repeat adsorption and desorption many times.
実施例 １
（１）アニオン交換能を有する繊維の調製綿繊維にアク
リルアミドをグラフト重合させ、その後にホフマン転位
を起こさせる。これにより、アミノ基を生成することに
よってアニオン交換能を有する綿ｌ！Ａ維を調製するこ
とができる。Example 1 (1) Preparation of fibers having anion exchange ability A cotton fiber is graft-polymerized with acrylamide and then subjected to Hoffmann rearrangement. This makes cotton l! which has anion exchange ability by producing amino groups! A fiber can be prepared.
の溶液中に６０℃で１２０分間浸漬し、かくはんして均
一なグラフト重合を進行させる。The sample was immersed in the solution at 60° C. for 120 minutes and stirred to proceed with uniform graft polymerization.
続いて、十分水洗後、脱水乾燥しグラフト率約２０％の
綿繊維が得られる。Subsequently, after thorough washing with water, the fibers are dehydrated and dried to obtain cotton fibers with a graft ratio of about 20%.
の溶液中に３０℃で６０分間浸漬し、かくはんして均一
なホフマン転位を進行させる。The sample was immersed in the solution at 30° C. for 60 minutes and stirred to proceed with uniform Hofmann rearrangement.
続いて、十分水洗後、希薄な酸による脱塩素処理ののち
、水洗、脱水及び乾燥することにより、アミノ基を含む
アニオン交換能を有する綿繊維が得られる。Subsequently, after thorough washing with water, dechlorination treatment with dilute acid, washing with water, dehydration, and drying yield cotton fibers containing amino groups and having anion exchange ability.
（２）アニオン系染料の吸着及び脱着効果前記アニオン
交換能を有する綿繊維１．１ｇを内径１０．２ｍｍのガ
ラス円筒内に高さ７．５ｃｍとなるように充填し、排液
吸着用カラムとする。反応染料染色のモデル排液として
、ビニルスルホン型反応染わ［のレマゾールブラック８
１１００ｐｐを含むｐｉ ４．５の水溶液を調製し、
前記のアニオン交換能を有する綿繊維を充填したカラム
の上部より、通液速度１．１ｍｌ／ｍｉｎで通液した場
合、１５００ｍ ｌを全く色素を含まない無色透明の状
態に処理することができる。(2) Effect of adsorption and desorption of anionic dyes 1.1 g of the cotton fibers having the above-mentioned anion exchange ability were packed in a glass cylinder with an inner diameter of 10.2 mm to a height of 7.5 cm, and used as a column for adsorption of waste liquid. do. Remazol Black 8, a vinyl sulfone type reactive dye, was used as a model wastewater for reactive dye staining.
Prepare an aqueous solution of pi 4.5 containing 1100 pp;
When the liquid is passed from the top of the column packed with cotton fibers having an anion exchange capacity at a flow rate of 1.1 ml/min, 1500 ml can be treated to a colorless and transparent state containing no pigment at all.
しかも、色素の飽和吸着した前記カラムの上部より０．
５ｚ水酸化ナトリウム水溶液を少量通液することによっ
て、吸着色素を完全に、しかも、濃厚）古漬の状態で脱
着することができる。Moreover, from the top of the column where the dye was saturatedly adsorbed, 0.
By passing a small amount of 5z sodium hydroxide aqueous solution, the adsorbed dye can be completely desorbed in a concentrated (furuzuke) state.
このようにして色素の脱着を行なった前記の力ラムミニ
、アルカリを中和する目的で０．５に塩酸水溶液を通液
し、再び前記と同掻コこ染料のモデル排液を通）αする
ことによって、はぼ同等の吸着能力を発揮することが認
められた。In order to neutralize the alkali, an aqueous solution of hydrochloric acid was passed through the above-mentioned Chikara Lamb Mini, in which the dye was desorbed in this way, and then again the same model drainage solution as above was passed through α). As a result, it was confirmed that the same adsorption capacity could be achieved.
比較のために、前記間はのガラス円筒に市販の粒状活性
炭５．０ｇを充填した吸着カラムにより、同様のモデル
排）αを同一条件で通）夜した場合、わずか１２０ｍ１
の通液によって染料吸着能力が失われた。For comparison, when a similar model exhaust (α) was run under the same conditions overnight using an adsorption column filled with 5.0 g of commercially available granular activated carbon in a glass cylinder, only 120 m
The dye adsorption ability was lost by passing through the solution.
アニオン交換能を有するセルロースｅｃｉＩｔｔを使用
した場合、活性炭の場合には全く不可能である色素の吸
着及び脱着挙動を外部より明瞭に判断することができる
ことは、実用上極めて大きな利点である。When cellulose ecItt having anion exchange ability is used, it is possible to clearly judge the adsorption and desorption behavior of the dye from the outside, which is completely impossible in the case of activated carbon, which is a very great practical advantage.
これら両者の吸着剤としての性能の比較は、表１に示す
とおりである。A comparison of the performance of these two adsorbents is shown in Table 1.
表１７ニオン交１灸昔を有するセルロース繊維と活性炭
の染 排液に対する吸着効率の比較また、前記と同様の
方法によりメタクリルアミドを用いた場合にも、アニオ
ン交換能を有するセルロース繊維を得ることができる。Table 17: Comparison of adsorption efficiency of cellulose fibers with anion exchange capacity and activated carbon to dyed waste liquid.Also, when methacrylamide is used in the same manner as above, cellulose fibers with anion exchange ability can be obtained. can.
以上、実施例で示したように、セルロース繊維にアクリ
ルアミドまたはメタクリルアミドをグラフト重合させ、
その後ホフマン転位を起こさせてアミノ基を生成させる
ことにより、染料をはじめとする、各種アニオン系の物
質の補集、濃縮に用いることがてき、また、アルカリ処
理により吸着したアニオン系の物質を容易に親書せしめ
、アルカリを中和することにより、再びその能力を回復
するアニオン交換能を有するセルロース繊維を調製する
方法を発明した。As shown in the examples above, by graft polymerizing acrylamide or methacrylamide to cellulose fibers,
After that, by causing Hoffmann rearrangement to generate amino groups, it can be used to collect and concentrate various anionic substances such as dyes, and it can also be used to easily remove adsorbed anionic substances by alkali treatment. We have invented a method for preparing cellulose fibers with anion exchange ability that regains its ability by neutralizing alkali.
Claims (1)
重合させ、その後、ホフマン転位を起させてアミノ基を
生成させることにより、各種アニオン系染料を強固に吸
着し、またアルカリ処理によって吸着したアニオン系染
料を脱着することのできることを特徴とするアニオン交
換能を有するセルロース繊維By graft polymerizing acrylamide or methacrylamide and then generating amino groups by causing Hoffmann rearrangement, various anionic dyes can be strongly adsorbed, and the adsorbed anionic dyes can be desorbed by alkali treatment. Cellulose fiber with anion exchange ability characterized by the ability to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61056507A JPS62213847A (en) | 1986-03-14 | 1986-03-14 | Cellulose fiber having anion exchange capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61056507A JPS62213847A (en) | 1986-03-14 | 1986-03-14 | Cellulose fiber having anion exchange capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62213847A true JPS62213847A (en) | 1987-09-19 |
| JPH0536100B2 JPH0536100B2 (en) | 1993-05-28 |
Family
ID=13029037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61056507A Granted JPS62213847A (en) | 1986-03-14 | 1986-03-14 | Cellulose fiber having anion exchange capacity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62213847A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074765A (en) * | 2013-01-21 | 2013-05-01 | 东华大学 | Method for preparing weak-base ion exchange fibers |
| CN103223354A (en) * | 2013-03-29 | 2013-07-31 | 武汉理工大学 | Preparation method of biomass-based anion exchange fiber |
| CN106917263A (en) * | 2017-03-24 | 2017-07-04 | 马鞍山中创环保科技有限公司 | A kind of method for preparing heavy metal ion exchange fiber using discarded acetate fiber |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0711153U (en) * | 1993-07-21 | 1995-02-21 | 國金 陳 | Waste cleaning equipment for fish tank |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52138490A (en) * | 1976-05-17 | 1977-11-18 | Kurashiki Boseki Kk | Cellulose ion exchange fibers and manufacture |
-
1986
- 1986-03-14 JP JP61056507A patent/JPS62213847A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52138490A (en) * | 1976-05-17 | 1977-11-18 | Kurashiki Boseki Kk | Cellulose ion exchange fibers and manufacture |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074765A (en) * | 2013-01-21 | 2013-05-01 | 东华大学 | Method for preparing weak-base ion exchange fibers |
| CN103223354A (en) * | 2013-03-29 | 2013-07-31 | 武汉理工大学 | Preparation method of biomass-based anion exchange fiber |
| CN106917263A (en) * | 2017-03-24 | 2017-07-04 | 马鞍山中创环保科技有限公司 | A kind of method for preparing heavy metal ion exchange fiber using discarded acetate fiber |
| CN106917263B (en) * | 2017-03-24 | 2019-03-22 | 马鞍山中创环保科技有限公司 | A method of heavy metal ion exchange fiber is prepared using discarded acetate fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0536100B2 (en) | 1993-05-28 |
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