CN105817210A - Method for preparing alkalescent ion exchange fibers - Google Patents
Method for preparing alkalescent ion exchange fibers Download PDFInfo
- Publication number
- CN105817210A CN105817210A CN201610368397.9A CN201610368397A CN105817210A CN 105817210 A CN105817210 A CN 105817210A CN 201610368397 A CN201610368397 A CN 201610368397A CN 105817210 A CN105817210 A CN 105817210A
- Authority
- CN
- China
- Prior art keywords
- ion exchange
- preparation
- product
- weak
- exchange fibre
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a method for preparing alkalescent ion exchange fibers .The method for preparing the alkalescent ion exchange fibers comprises the following steps that a proper number of specific fibers are taken and slowly added into a proper amount of organic alcohol, a quantitative aminated reagent is added, a backflow reaction is carried in a stirring state, the product is washed with water and air-dried, and an intermediate product is obtained; the intermediate product is added into a proper quantity of organic alcohol and chlorine containing solvent, stirring is carried out for 5 min to 10 min at normal temperature, an aminated reagent is added, reacting is carried out at the temperature of 25 DEG C to 75 DEG C, the solvent is removed after the reaction is finished, the product is washed with water and 1-5% hydrochloric acid in sequence, finally the product is washed to be neutral, and the alkalescent ion exchange fibers are obtained .The specific fibers are adopted as a framework, two steps of amination reactions are carried out, a high-selectivity adsorbing material is formed, the advantages that the preparation method is simple, the raw materials are cheap and available, the adsorption capacity is large, and the chelating capacity is high are achieved, Cr(VI) irons can be effectively adsorbed from waste water, mechanical and chemical stability of the product is good, the product can be preserved for a long time of 5 fives or more at room temperature, and the adsorption performance of the product does not change.
Description
Technical field
The present invention relates to the preparation method of a kind of Weak-alkaline ion exchange fibre, specifically, can efficiently remove the ion-exchange fibre preparation method of Cr (VI) in the waste water system such as plating, aluminum oxidation, auto parts machinery particularly to one.
Background technology
Along with global industry process is fast-developing, heavy metal water pollutes health and environment to the mankind and causes serious threat.Wherein, Cr VI, as a kind of important industrial chemicals, is widely used in the industries such as intermetallic composite coating, plating, process hides.At present in industry, processing method to hexavalent chromium wastewater is mainly hexavalent chrome reduction is low toxicity trivalent chromium, then with Cr (OH)3Precipitation form removes.The solid precipitation that this method produces easily forms new pollution, and can not realize the resource reclaim of chromium ion.
Adsorption filtration is the significant element technology during current profound purification processes.At present, the conventional active charcoal of adsorbing material, activated alumina and ion exchange resin etc., though they can adsorb various pollutant effectively, but due to its relatively low adsorption capacity, slower adsorption rate and poor mechanical stability etc. so that it is extensively application is restricted.Therefore, researching and developing the adsorbing material of new and effective economy and a kind of simple to operate, resource type treating technique of cost economy, the process to hexavalent chromium wastewater has good using value.
Ion-exchange fibre is a kind of Novel adsorption separation material occurred after ion exchange resin, use has economic synthetic fibers such as more: the fiber such as polrvinyl chloride, PVA-based polyacrylonitrile is raw material, the stepwise disposals such as chemically modified, graft copolymerization, produce avtive spot and include the chemical functional groups such as acidity, alkalescence and chelating.In application process, there is mass transfer and soon, only remove the high obvious kinetic advantage of rate apart from short, the rate of adsorption.Ion-exchange fibre adsorbing material combines the respective advantage of granular ion exchange resin and fiber filter material, therefore, has broad application prospects in industry, the field of Environment Protections such as chemical separating, cleaning production and resource recycling.
SUS165844 has synthesized a kind of containing carboxyl with the Fibriform adsorbents of diazanyl, amine and the purified treatment of ammonium nitrate in gas；In SU1512984, successively by polyacrylonitrile fibre and azanol, polyethylene polyamine reaction, it is prepared for the ion exchange chelate fibre containing amino, hydroxyl oximido；CN1172870 is prepared for containing carboxyl, hydrazide group, amino and phosphate and imidazolinyl chelate fibre with polyacrylonitrile fibre for skeleton.These fiber adsorbing substances are mainly used in absorption and the removal of metal cation such as heavy metal ion, precious metal ion, or remove harmful anion such as F in water~、PO4 3～Deng, high adsorption capacity, but the reagent such as widely used chloromethyl ether, there is stronger toxicity, and the exchange capacity of alkali anion exchange fiber that non-chloromethyl ether method prepares is the most relatively low.
Summary of the invention
In order to overcome the deficiency existing for above-mentioned prior art, the present invention is by substantial amounts of experiment screening and optimization, determine a kind of Weak-alkaline ion exchange fibre preparation method, overcome the problems referred to above, Cr (VI) handling rate can reach more than 97.9% during (pH=1～13) is to waste water in the range of the widest pH, preserving more than 5 years for a long time, its absorption property is constant；The functional group being mainly by building ad hoc structure of the present invention, it is achieved the high-performance for Cr (VI) is adsorbed.
The purpose of the present invention can be achieved through the following technical solutions:
The preparation method of a kind of Weak-alkaline ion exchange fibre, this preparation method comprises the steps:
(1) one step is aminated: takes appropriate special fiber and is slowly added in appropriate Organic Alcohol, and adds quantitative aminated reagent, and in back flow reaction under stirring, products in water washs, dries, and obtains intermediate product；
(2) two steps are aminated: intermediate product adds appropriate Organic Alcohol, chloride kind solvent, stirring at normal temperature 5～10min, adds aminated reagent, 25～75 DEG C of reactions, remove solvent after end, successively by water, 1～5% hydrochloric acid wash products, finally wash with water to neutrality and obtain product.
Special fiber described in step (1) is the one in polyolefin, polyacrylonitrile, polyvinyl alcohol, polrvinyl chloride, polyethylene～acrylonitrile copolymer.
Described Organic Alcohol is one or more in ethylene glycol, 2,2'-ethylenedioxybis(ethanol)., glycerol.
Described aminated reagent is one or more in ethylenediamine, diethylenetriamine, triethylene tetramine, aminopyridine, azanol, dimethylethanolamine, diethanolamine.
Reflux time described in step (1) is 5～12h.
Special fiber described in step (1), Organic Alcohol and aminated reagent quality are than for 1:5～50:1～20.
Chloride kind solvent described in step (2) is 1,2～one or more in dichloroethanes, chloroform, tetrachloromethane, ethyl chloride, chloropropane etc..
Intermediate product described in step (2) is 1:5～20 with the mass ratio of Organic Alcohol.
Organic Alcohol described in step (2), chloride kind solvent and aminated reagent quality are than for 1:0.05～1:0.05～1.
Beneficial effects of the present invention:
(1) this Project Product method of modifying is simple, easily operates, and Cr (VI) handling rate can reach more than 97.9% during (pH=1～13) is to waste water in the range of the widest pH, and absorption property is stable；
(2) product has higher exchange capacity (8mmol/g), relies primarily on Coulomb force with object ion exchange, quickly can separate object ion from solution, and saturated adsorption time is short；
(3) this product possesses the fibre structure of uniqueness, and recyclable regenerative more than 500 times, high life, relative cost is low.
Detailed description of the invention
In order to be better understood from the present invention, further illustrate the present invention below in conjunction with embodiment, but be not limitation of the present invention.
In following example: Cr (VI) solution is configured by potassium dichromate, pH value is regulated by sodium hydroxide or sulphuric acid；The method of mensuration Cr (VI) used is atomic emission spectrometry.
Embodiment 4 directly takes from automobile decoration piece company limited of Ma'an Mountain with containing Cr (VI) waste water.
Embodiment 1:
Cr (VI) solution is prepared: claim appropriate potassium dichromate, prepares 2.5mmol/L solution, adjusts pH=2；Survey Cr (VI) content.
(1) one step is aminated: take polyacrylonitrile fibre 10g, is slowly added in 150ml glycerol and stirs, and adds 50g aminopyridine, back flow reaction 8h, filters, dry after fully cleaning to eluent close to neutrality with tap water；
(2) two steps are aminated: take the reacted intermediate product of the first step, join 200ml ethylene glycol, 45ml1,2～dichloroethanes in, stirring at normal temperature 10min, add diethanolamine, 50 DEG C of reaction 6h, remove solvent after terminating, successively by water, 2% hydrochloric acid wash products, finally wash with water to neutrality and obtain product；
(3) adsorption experiment: take 10ml product and load chromatographic column.1200mLCr (VI) solution is adsorbed through ion-exchange fibre, speed 1BV/h.
In solution before and after measurement, calculating absorption, Cr (VI) amount can obtain: Cr (VI) saturated extent of adsorption is 2.187mmol/g (dry fibers).When processing volume ＜ 50BV, in water outlet, Cr (VI) content detection does not goes out.
Embodiment 2:
Cr (VI) solution is prepared: claim appropriate potassium dichromate, prepares 2.5mmol/L solution, adjusts pH=2；Survey Cr (VI) content.
(1) one step is aminated: take polyacrylonitrile fibre 10g, is slowly added in 150ml 2,2'-ethylenedioxybis(ethanol). and stirs, and adds 50g diethylenetriamine, back flow reaction 8h, filters, dry after fully cleaning to eluent close to neutrality with tap water；
(2) two steps are aminated: take the reacted intermediate product of the first step, join in 200ml ethylene glycol, 45ml tetrachloromethane, stirring at normal temperature 10min, add ethylenediamine, 50 DEG C of reaction 8h, remove solvent after end, successively by water, 3% hydrochloric acid wash products, finally wash with water to neutrality and obtain product；
(3) adsorption experiment: take 10ml product and load chromatographic column, 1200mLCr (VI) solution is adsorbed through ion-exchange fibre, speed 1BV/h.
In solution before and after measurement, calculating absorption, Cr (VI) amount can obtain: Cr (VI) saturated extent of adsorption is 1.856mmol/g (dry fibers), when processing volume ＜ 48BV, Cr (VI) content≤0.05ppm in water outlet.
Embodiment 3:
Cr (VI) solution is prepared: claim appropriate potassium dichromate, prepares 2.5mmol/L solution, adjusts pH=2；Survey Cr (VI) content.
(1) one step is aminated: take polyacrylonitrile fibre 10g, is slowly added in 160ml 2,2'-ethylenedioxybis(ethanol). and stirs, and adds 60g aminopyridine, back flow reaction 8h, filters, dry after fully cleaning to eluent close to neutrality with tap water；
(2) two steps are aminated: take the reacted intermediate product of the first step, join 150ml glycerol, 45ml1,2～dichloroethanes in, stirring at normal temperature 10min, add diethylenetriamine, 60 DEG C of reaction 8h, remove solvent after terminating, successively by water, 3% hydrochloric acid wash products, finally wash with water to neutrality and obtain product；
(3) adsorption experiment: take 10ml product and load chromatographic column.1200mLCr (VI) solution is adsorbed through ion-exchange fibre, speed 1BV/h.
In solution before and after measurement, calculating absorption, Cr (VI) amount can obtain: Cr (VI) saturated extent of adsorption is 1.653mmol/g (dry fibers).When processing volume ＜ 46BV, Cr (VI) Content≤0.05ppm in water outlet.
Embodiment 4:
Cr (VI) solution is prepared: claim appropriate potassium dichromate, prepares 2.5mmol/L solution, adjusts pH=2；Survey Cr (VI) content.
Taking from automobile decoration piece company limited of Ma'an Mountain containing Cr (VI) waste water, content is 100ppm, pH=5.9, adjusts pH=2 before processing.
Other operations are such as embodiment 1.
Adsorption experiment:
Take 10ml product and load chromatographic column.1200mLCr (VI) solution is adsorbed through ion-exchange fibre, speed 1BV/h.
In solution before and after measurement, calculating absorption, Cr (VI) amount can obtain: Cr (VI) saturated extent of adsorption is 2.187mmol/g (dry fibers).When processing volume ＜ 50BV, in water outlet, Cr (VI) content detection does not goes out.
In above-described embodiment 1-4, polyacrylonitrile fibre it be also possible to use a kind of fiber in polyolefin, polyvinyl alcohol, polrvinyl chloride, polyethylene～acrylonitrile copolymer and replaces；Diethanolamine it be also possible to use one or more in ethylenediamine, diethylenetriamine, triethylene tetramine, aminopyridine, azanol, dimethylethanolamine and replaces；1,2～dichloroethanes it be also possible to use in chloroform, tetrachloromethane, ethyl chloride, chloropropane one or more replace.
The present invention is prepared for a kind of to plating, aluminum oxidation, in the waste water system such as auto parts machinery, Cr (VI) ion has the Weak-alkaline ion exchange fibre adsorbent of strong absorption property, the method is with special fiber as skeleton, by the two aminated reactions of step, form high-selectivity adsorbing material, wherein the content of amido is 10～15%, it is simple that the product of the present invention has preparation method, cheaper starting materials is easy to get, adsorption capacity is big, the feature that sequestering power is strong, can effectively from waste water Cr (VI) ionic adsorption out, and product mechanically and chemically good stability, preserve more than 5 years for a long time, its absorption property is constant.
Above content is only citing made for the present invention and explanation; described specific embodiment is made various amendment or supplements or use similar mode to substitute by affiliated those skilled in the art; without departing from inventing or surmounting scope defined in the claims, protection scope of the present invention all should be belonged to.
Claims (9)
1. the preparation method of a Weak-alkaline ion exchange fibre, it is characterised in that this preparation method comprises the steps:
(1) one step is aminated: takes appropriate special fiber and is slowly added in appropriate Organic Alcohol, and adds quantitative aminated reagent, and in back flow reaction under stirring, products in water washs, dries, and obtains intermediate product；
(2) two steps are aminated: intermediate product adds appropriate Organic Alcohol, chloride kind solvent, stirring at normal temperature 5～10min, adds aminated reagent, 25～75 DEG C of reactions, remove solvent after end, successively by water, 1～5% hydrochloric acid wash products, finally wash with water to neutrality and obtain product.
The preparation method of a kind of Weak-alkaline ion exchange fibre the most according to claim 1, it is characterized in that, the special fiber described in step (1) is the one in polyolefin, polyacrylonitrile, polyvinyl alcohol, polrvinyl chloride, polyethylene～acrylonitrile copolymer.
The preparation method of a kind of Weak-alkaline ion exchange fibre the most according to claim 1, it is characterised in that described Organic Alcohol is one or more in ethylene glycol, 2,2'-ethylenedioxybis(ethanol)., glycerol.
The preparation method of a kind of Weak-alkaline ion exchange fibre the most according to claim 1, it is characterized in that, described aminated reagent is one or more in ethylenediamine, diethylenetriamine, triethylene tetramine, aminopyridine, azanol, dimethylethanolamine, diethanolamine.
The preparation method of a kind of Weak-alkaline ion exchange fibre the most according to claim 1, it is characterised in that the reflux time described in step (1) is 5～12h.
The preparation method of a kind of Weak-alkaline ion exchange fibre the most according to claim 1, it is characterised in that the special fiber described in step (1), Organic Alcohol and aminated reagent quality are than for 1:5～50:1～20.
The preparation method of a kind of Weak-alkaline ion exchange fibre the most according to claim 1, it is characterized in that, chloride kind solvent described in step (2) is 1,2～one or more in dichloroethanes, chloroform, tetrachloromethane, ethyl chloride, chloropropane.
The preparation method of a kind of Weak-alkaline ion exchange fibre the most according to claim 1, it is characterised in that the intermediate product described in step (2) is 1:5～20 with the mass ratio of Organic Alcohol.
The preparation method of a kind of Weak-alkaline ion exchange fibre the most according to claim 1, it is characterised in that the Organic Alcohol described in step (2), chloride kind solvent and aminated reagent quality are than for 1:0.05～1:0.05～1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368397.9A CN105817210A (en) | 2016-05-24 | 2016-05-24 | Method for preparing alkalescent ion exchange fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368397.9A CN105817210A (en) | 2016-05-24 | 2016-05-24 | Method for preparing alkalescent ion exchange fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105817210A true CN105817210A (en) | 2016-08-03 |
Family
ID=56532298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610368397.9A Pending CN105817210A (en) | 2016-05-24 | 2016-05-24 | Method for preparing alkalescent ion exchange fibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105817210A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107970903A (en) * | 2017-11-29 | 2018-05-01 | 郑州大学 | A kind of preparation method for the chelating function fiber for adsorbing heavy metal ion |
| CN110975830A (en) * | 2019-11-22 | 2020-04-10 | 马鞍山中创环保科技有限公司 | AlO in aluminum profile processing wastewater2-Process for producing adsorbent for treatment |
| CN111246939A (en) * | 2017-08-23 | 2020-06-05 | 伊莱克福有限公司 | Fibrous adsorbent |
| CN113373541A (en) * | 2021-06-11 | 2021-09-10 | 浙江工商大学 | Preparation method and application of 4-aminopyridine color-developing fiber |
| CN114657786A (en) * | 2022-03-07 | 2022-06-24 | 中国船舶重工集团公司第七一八研究所 | Preparation method of high-amino-content functional fiber |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569854A (en) * | 2009-06-05 | 2009-11-04 | 河南省科学院化学研究所有限公司 | Arsenic adsorbing fiber and synthesizing method thereof |
| CN101879466A (en) * | 2010-07-02 | 2010-11-10 | 河南省科学院化学研究所有限公司 | Strong caustic anion exchanging fiber material and synthetic method thereof |
| JP2012031449A (en) * | 2010-07-29 | 2012-02-16 | National Institute Of Advanced Industrial Science & Technology | Method for recovering rhodium |
| CN102489268A (en) * | 2011-12-20 | 2012-06-13 | 南京大学 | Amine-modified fibrous emergent absorbing material and preparation method thereof |
| CN102600805A (en) * | 2012-03-28 | 2012-07-25 | 陕西科技大学 | Preparation method of modified collagen fiber adsorbing material |
| CN102744042A (en) * | 2012-07-02 | 2012-10-24 | 陕西科技大学 | Synthesis method of amination modified collagen fiber adsorbent |
| CN104941588A (en) * | 2015-06-01 | 2015-09-30 | 天津工业大学 | Recyclable fiber material capable of quickly removing heavy metal anions |
-
2016
- 2016-05-24 CN CN201610368397.9A patent/CN105817210A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569854A (en) * | 2009-06-05 | 2009-11-04 | 河南省科学院化学研究所有限公司 | Arsenic adsorbing fiber and synthesizing method thereof |
| CN101879466A (en) * | 2010-07-02 | 2010-11-10 | 河南省科学院化学研究所有限公司 | Strong caustic anion exchanging fiber material and synthetic method thereof |
| JP2012031449A (en) * | 2010-07-29 | 2012-02-16 | National Institute Of Advanced Industrial Science & Technology | Method for recovering rhodium |
| CN102489268A (en) * | 2011-12-20 | 2012-06-13 | 南京大学 | Amine-modified fibrous emergent absorbing material and preparation method thereof |
| CN102600805A (en) * | 2012-03-28 | 2012-07-25 | 陕西科技大学 | Preparation method of modified collagen fiber adsorbing material |
| CN102744042A (en) * | 2012-07-02 | 2012-10-24 | 陕西科技大学 | Synthesis method of amination modified collagen fiber adsorbent |
| CN104941588A (en) * | 2015-06-01 | 2015-09-30 | 天津工业大学 | Recyclable fiber material capable of quickly removing heavy metal anions |
Non-Patent Citations (2)
| Title |
|---|
| 代立波等: "弱碱性离子交换纤维对六价铬吸附性能的研究", 《高校化学工程学报》 * |
| 吕向华: "含季铵基离子交换纤维的合成表征及其对Cr（VI）的吸附性能研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111246939A (en) * | 2017-08-23 | 2020-06-05 | 伊莱克福有限公司 | Fibrous adsorbent |
| CN111246939B (en) * | 2017-08-23 | 2022-12-27 | 伊莱克福有限公司 | Fibrous adsorbent |
| CN107970903A (en) * | 2017-11-29 | 2018-05-01 | 郑州大学 | A kind of preparation method for the chelating function fiber for adsorbing heavy metal ion |
| CN107970903B (en) * | 2017-11-29 | 2021-04-13 | 郑州大学 | Preparation method of chelating functional fiber for adsorbing heavy metal ions |
| CN110975830A (en) * | 2019-11-22 | 2020-04-10 | 马鞍山中创环保科技有限公司 | AlO in aluminum profile processing wastewater2-Process for producing adsorbent for treatment |
| CN113373541A (en) * | 2021-06-11 | 2021-09-10 | 浙江工商大学 | Preparation method and application of 4-aminopyridine color-developing fiber |
| CN113373541B (en) * | 2021-06-11 | 2023-08-08 | 浙江工商大学 | Preparation method and application of 4-aminopyridine chromogenic fiber |
| CN114657786A (en) * | 2022-03-07 | 2022-06-24 | 中国船舶重工集团公司第七一八研究所 | Preparation method of high-amino-content functional fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105817210A (en) | Method for preparing alkalescent ion exchange fibers | |
| Davron et al. | Synthesis of a New Granulated Polyampholyte and its Sorption Properties. | |
| Kalidhasan et al. | The journey traversed in the remediation of hexavalent chromium and the road ahead toward greener alternatives—A perspective | |
| Rafati et al. | Removal of chromium (VI) from aqueous solutions using Lewatit FO36 nano ion exchange resin | |
| CN104018346B (en) | Cr (VI) is had to the synthetic method of the chelate fibre of selective absorption | |
| CN101264933B (en) | Deep purification method for removing micro-tungsten from high-concentration molybdenate solution | |
| CN107473467A (en) | A kind of method of hexavalent chromium in Adsorption industrial wastewater | |
| Indah et al. | Studies on desorption and regeneration of natural pumice for iron removal from aqueous solution | |
| CN110523395B (en) | MOF-loaded resin composite adsorbent and preparation method and application thereof | |
| CN104971687A (en) | Efficient compound iron-based phosphorous-removing adsorbent as well as preparation method, application method and regeneration method thereof | |
| CN106824113B (en) | Preparation and application of imidazole ionic liquid modified chitosan adsorbent | |
| Tao et al. | Highly efficient removal of glyphosate from water by hierarchical-pore UiO-66: Selectivity and effects of natural water particles | |
| CN105950160A (en) | Restoration method for chromium-contaminated soil | |
| CN104722282A (en) | Synthesizing method of fly ash magnetic bead magnetic adsorbent coated by chitosan | |
| CN107349905A (en) | The method that a kind of nitrogen co-doped magnetic carbon material of fluorine removes hexavalent chromium in industrial wastewater | |
| Hamza | Uranium recovery from concentrated chloride solution produced from direct acid leaching of calcareous shale, Allouga ore materials, southwestern Sinai, Egypt | |
| Ling et al. | Molecular mechanisms of pyrophosphate-mediated selective adsorption of Ni (II) by polyamine-grafted chitosan–wood flour composite from alkaline plating wastewater: EXAFS investigation and theoretical calculations | |
| Polikarpov et al. | FIBAN fibrous ion exchangers: Synthesis, modification, application | |
| CN105294890A (en) | Method for recycling silver ion from sewer sludge by using novel chelate resin | |
| CN104841368A (en) | Eluent renewable material and application thereof | |
| CN101905146A (en) | Silica gel-polyethylene polyamine, preparation method and application thereof to absorbing heavy metal ions | |
| Bakir et al. | Competitive Sorption of Antimony with Zinc, Nickel, and Aluminum in a Seaweed Based Fixed‐bed Sorption Column | |
| Marzouk et al. | Application of Donnan dialysis coupled to adsorption onto activated alumina for chromium (VI) removal | |
| CN105664845A (en) | Compound adsorbent for absorbing rubidium ions as well as preparation method and application of compound adsorbent | |
| Zhang et al. | Adsorption of phosphate from solution by iron modified macroporous chelating resin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160803 |