CN1204055C - Water purifying agent and its prepn process - Google Patents
Water purifying agent and its prepn process Download PDFInfo
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- CN1204055C CN1204055C CN 02147691 CN02147691A CN1204055C CN 1204055 C CN1204055 C CN 1204055C CN 02147691 CN02147691 CN 02147691 CN 02147691 A CN02147691 A CN 02147691A CN 1204055 C CN1204055 C CN 1204055C
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- chitosan
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Abstract
The present invention relates to a water purifying agent and a preparing method thereof. Chitosan and activated carbon are firstly mixed according to the proportion of 1:1 to 9:1, and 3 to 6g of mixtures is dissolved into 100 ml of HAC solution with the concentration of 0.7 to 1.2 % to stir and dissolve. Then, the mixed solution is dripped into alkaline solidifying solution consists of 40% of sodium hydroxide and etanol mixed solution with the proportion of 1:25 to 1:30, and the gradually dripped mixed solution is coagulated into small ball shape in the solidifying solution. After washed by distilled water, small balls are dried at a room temperature and are continuously dried for 2 to 3 hours in a baking oven with the temperature of 30 to 70 DEG C, and granular mixtures with the corresponding proportion of the chitosan and the activated carbon are obtained. The agent has the characteristics of stable preparing technology, good removing effect on organic pollutants, recycle, no secondary pollution, etc. The agent is a new water purifying material with high efficiency, cleanness and safety.
Description
Technical field
What the present invention relates to is a kind of water purification agent of energy adsorb organic compound and the method for preparing this water purification agent thereof, belongs to the organism sorbent material class of water treatment.
Background technology
It is some harmful and noxious substances in the sorbing material planar water that present most of water purifying plant all adopts gac.But acticarbon in use not only can influence the colourity of water, and the difficult filtration of the gac of its powdered, easily causes the secondary pollution of water.Usually the charcoal absorption material is applicable to the low-molecular-weight organism of absorption, and is relatively poor to the adsorption effect of some the micro-macromolecule organics that exist in the water and polar organic matter.
Summary of the invention
The object of the present invention is to provide a kind of healthy and safe water-purifying material, i.e. water purification agent and the preparation method who combines by efficient chitosan and gac.This water purification agent comprises that mainly chitosan is a substrate material, it is mixed with gac and solidifies and becomes granular mixture, and wherein the mixed weight per-cent of chitosan and gac is 1: 1-9: 1.
The mixed weight ratio of described chitosan and gac is 1: 1, and also contains HCl solute and alkaline cured article in mixture.
A kind of method for preparing water purification agent, it be earlier with chitosan and gac by 1: 1-9: 1 mixed, taking by weighing the 3-4g mixture is dissolved in the 100ml0.7-1.2%HCl solution, stir, dissolving, then mixing solutions is splashed into by 1: 25-1: in the alkaline solid solution that 30 40% sodium hydroxide and alcohol mixeding liquid are formed, dropwise the mixing solutions of Jia Ruing congeals into coccoid in solid solution, with also at room temperature air-dry behind the distilled water wash bead, in 30-70 ℃ baking oven continuous drying 2-3 hour again, obtain the granular mixture of chitosan and gac.
The part by weight that described chitosan and gac were pressed earlier 1: 1 mixes, taking by weighing the 4g mixture is dissolved in the HCl solution of 70ml1%, stir, dissolving, then mixing solutions is splashed in the alkaline solid solution of forming by 1: 30 40% sodium hydroxide and alcohol mixeding liquid, be solidified into coccoid and air-dry after, continuous drying is 3 hours in 70 ℃ baking oven, obtains the granular mixture of chitosan and gac.
It is substrate material that the present invention selects chitosan, it is a kind of natural polymers, nontoxic, readily biodegradable, can not cause secondary pollution and aboundresources, it contains a large amount of hydroxyls and amino, can it be removed from the aqueous solution by hydrogen bond, covalent linkage or coordinate bond and organic molecule mortise.Chitosan not only can adsorb some low molecule organic matters, can also adsorb some macromolecule organics, as protein, amino acid, nucleic acid, lipid acid etc.The present invention combines chitosan and gac, has overcome the colourity that gac influences water, is difficult for shortcomings such as filtrations, and it can remove wider organic compound, has efficient, cleaning, safe a series of technique effects such as water purification effect.
Embodiment
The present invention will be described in detail below in conjunction with embodiment: embodiment one, earlier chitosan is mixed with the part by weight of gac by 1: 1, taking by weighing the 4g mixture is dissolved in the 70ml1%HCl solution, stir, dissolving, then mixing solutions is splashed in the alkaline solid solution of forming by 1: 30 40% sodium hydroxide and alcohol mixeding liquid, dropwise the chitosan of Jia Ruing---the gac mixing solutions congeals into coccoid in solid solution, with also at room temperature air-dry behind the distilled water wash bead, 70 ℃ baking oven continuous drying 3 hours, obtaining mass ratio was 1: 1 the chitosan and the sorbent material of activated carbon granule shape mixture again.
Embodiment two, chitosan and gac are pressed 1: 3 mixed by elder generation, taking by weighing the 3g mixture is dissolved in the 80ml0.7%HCl solution, stir, dissolving, then mixing solutions is splashed in the alkaline solid solution of forming by 1: 25 40% sodium hydroxide and alcohol mixeding liquid, dropwise the mixing solutions of Jia Ruing congeals into coccoid in solid solution, with also at room temperature air-dry behind the distilled water wash bead, 30 ℃ baking oven continuous drying 2.5 hours, obtaining mass ratio was 3: 1 the chitosan and the sorbent material of activated carbon granule shape mixture again.
Embodiment three, chitosan and gac are pressed 9: 1 mixed by elder generation, taking by weighing the 6g mixture is dissolved in the 130ml1.2%HCl solution, stir, dissolving, then mixing solutions is splashed in the alkaline solid solution of forming by 1: 28 40% sodium hydroxide and alcohol mixeding liquid, dropwise the mixing solutions of Jia Ruing congeals into coccoid in solid solution, with also at room temperature air-dry behind the distilled water wash bead, again 50 ℃ baking oven continuous drying 2 hours, obtain mass ratio and be 9: 1 chitosans and activated carbon granule shape mixture sorbent material.
The present invention adopts certain density hydrochloric acid that chitosan is dissolved fully, to be made into the mixed solution of chitosan and gac.Stable preparation process of the present invention, removal effect to organic pollutant is good, and can repeatedly reclaim use, general as long as can use repeatedly through after 30-70 ℃ of drying treatment, basic non-secondary pollution, therefore this combined water purifying agent has wide application prospect in the drink water purifying field.
Claims (4)
1, a kind of water purification agent, it is characterized in that it comprises that mainly chitosan is a substrate material, it is mixed with gac and solidify and become granular mixture, wherein the mixed weight of chitosan and gac is 1: 1-9: 1, and in mixture, also contain HCl solute and alkaline cured article.
2, water purification agent according to claim 1, the mixed weight ratio that it is characterized in that described chitosan and gac is 1: 1.
3, a kind of method for preparing water purification agent as claimed in claim 1 or 2, it be earlier with chitosan and gac by 1: 1-9: 1 mixed, taking by weighing the 3-4g mixture is dissolved in the 100ml0.7-1.2%HCl solution, stir, dissolving, then mixing solutions is splashed into by 1: 25-1: in the alkaline solid solution that 30 40% sodium hydroxide and alcohol mixeding liquid are formed, dropwise the mixing solutions of Jia Ruing congeals into coccoid in solid solution, with also at room temperature air-dry behind the distilled water wash bead, in 30-70 ℃ baking oven continuous drying 2-3 hour again, obtain the granular mixture of chitosan and gac.
4, the method for preparing water purification agent according to claim 3, it is characterized in that the first part by weight by 1: 1 of described chitosan and gac mixes, taking by weighing the 4g mixture is dissolved in the HCl solution of 70ml1%, stir, dissolving splashes into mixing solutions in the alkaline solid solution of being made up of 1: 30 40% sodium hydroxide and alcohol mixeding liquid then, be solidified into coccoid and air-dry after, continuous drying is 3 hours in 70 ℃ baking oven, obtains the granular mixture of chitosan and gac.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02147691 CN1204055C (en) | 2002-10-28 | 2002-10-28 | Water purifying agent and its prepn process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02147691 CN1204055C (en) | 2002-10-28 | 2002-10-28 | Water purifying agent and its prepn process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417133A CN1417133A (en) | 2003-05-14 |
| CN1204055C true CN1204055C (en) | 2005-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02147691 Expired - Fee Related CN1204055C (en) | 2002-10-28 | 2002-10-28 | Water purifying agent and its prepn process |
Country Status (1)
| Country | Link |
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| CN (1) | CN1204055C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101940912B (en) * | 2010-09-27 | 2012-05-09 | 浙江农林大学 | Method for producing adsorbent by coupling chitosan and bamboo charcoal with sodium alginate |
| CN102580690B (en) * | 2012-03-06 | 2014-07-02 | 杭州师范大学 | Nano-aperture granular adsorbent and preparation and application thereof |
| CN105214609B (en) * | 2015-10-09 | 2018-03-09 | 北京金达威活性炭科技有限公司 | A kind of processing method for the water purifier granular activated carbon for adding chitosan |
| CN108745299A (en) * | 2018-05-17 | 2018-11-06 | 菏泽学院 | A kind of preparation method of special appearance adsorbent |
| CN109876780B (en) * | 2019-02-02 | 2022-02-18 | 浙江省环境科技有限公司 | Phosphorus removal adsorbent and preparation method thereof |
| CN110496605A (en) * | 2019-08-26 | 2019-11-26 | 南京大学 | A kind of chitosan-biology carbon composite and application method |
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2002
- 2002-10-28 CN CN 02147691 patent/CN1204055C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1417133A (en) | 2003-05-14 |
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