CN1417133A - Water purifying agent and its prepn process - Google Patents
Water purifying agent and its prepn process Download PDFInfo
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- CN1417133A CN1417133A CN 02147691 CN02147691A CN1417133A CN 1417133 A CN1417133 A CN 1417133A CN 02147691 CN02147691 CN 02147691 CN 02147691 A CN02147691 A CN 02147691A CN 1417133 A CN1417133 A CN 1417133A
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- chitosan
- gac
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- solution
- water purification
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Abstract
The water purifying agent is granulated mixture of chitosan and active carbon, which is produced through the process including mixing chitosan and active carbon, dissolving the mixture in HAC solution via stirring, adding dropwise the solution to alkali curing liquid comprising sodium hydroxide and ethanol to obtain solidified small balls, washing the small balls with distilled water, drying at room temperature, and drying at 30-70 deg.c for 2-3 hr. The water purifying agent has high eliminating effect on organic pollutant and no secondary pollution.
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.It by chitosan and gac by 1: 1-9: 1 part by weight mixes and solidifies and become granular mixture.
The blending ratio of described chitosan and gac is 1: 1, and also contains small amount of H AC solute and alkaline cured article in mixture.
The method of the above-mentioned water purification agent of described preparation, it be earlier with chitosan and gac by 1: 1-9: 1 mixed, then mixture is added in the hydrochloric acid soln in the ratio of 3-4g chitosan corresponding to 100ml 0.7-1.2%HAC solution, through stirring with after fully dissolving, 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, 30-70 ℃ baking oven continuous drying 2-3 hour, obtain the granular mixture of chitosan and gac again.
Described chitosan and gac are pressed 1: 1 mixed earlier, then mixture is added in the hydrochloric acid soln in the ratio of 3.3g chitosan corresponding to 100ml 0.7-1.2%HAC solution, after stirring and 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 70ml 1%HAC solution, through stirring, after the dissolving, mixing solutions is splashed in the alkaline solid solution of being made up of 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 3: 1 mixed by elder generation, taking by weighing the 3g mixture is dissolved in the 80ml 0.7%HAC solution, after stirring, dissolving, mixing solutions is splashed in the alkaline solid solution of being made up of 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 130ml 1.2%HAC solution, after stirring, dissolving, mixing solutions is splashed in the alkaline solid solution of being made up of 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 is characterized in that it selects for use chitosan as substrate material, with its with gac by 1: 1-9: 1 part by weight mixes and solidifies and become granular mixture.
2, water purification agent according to claim 1, the weight blending ratio that it is characterized in that described chitosan and gac is 1: 1, and also contains small amount of H AC solute and alkaline cured article in mixture.
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, mixture is dissolved in by in the solution of 3-4g chitosan corresponding to 100m1 0.7-1.2%HAC solution, through stirring, after the dissolving, 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, require the 3 described methods that prepare water purification agent according to power right profit, it is characterized in that the first part by weight by 1: 1 of described chitosan and gac mixes, then mixture is dissolved in the solution by the corresponding configuration of 3.3g chitosan 100ml 0.7-1.2%HAC solution, after stirring, dissolving, mixing solutions is splashed in the alkaline solid solution of being made up of 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.
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 true CN1417133A (en) | 2003-05-14 |
| CN1204055C 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) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101940912A (en) * | 2010-09-27 | 2011-01-12 | 浙江农林大学 | Method for producing adsorbent by coupling chitosan and bamboo charcoal with sodium alginate |
| CN102580690A (en) * | 2012-03-06 | 2012-07-18 | 杭州师范大学 | Nano-aperture granular adsorbent and preparation and application thereof |
| CN105214609A (en) * | 2015-10-09 | 2016-01-06 | 北京金达威活性炭科技有限公司 | A kind of processing method of adding the water purifier granular activated carbon of shitosan |
| CN108745299A (en) * | 2018-05-17 | 2018-11-06 | 菏泽学院 | A kind of preparation method of special appearance adsorbent |
| CN109876780A (en) * | 2019-02-02 | 2019-06-14 | 杭州师范大学 | A kind of dephosphorization 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 |
-
2002
- 2002-10-28 CN CN 02147691 patent/CN1204055C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101940912A (en) * | 2010-09-27 | 2011-01-12 | 浙江农林大学 | Method for producing adsorbent by coupling chitosan and bamboo charcoal with sodium alginate |
| 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 |
| CN102580690A (en) * | 2012-03-06 | 2012-07-18 | 杭州师范大学 | Nano-aperture granular adsorbent and preparation and application thereof |
| CN105214609A (en) * | 2015-10-09 | 2016-01-06 | 北京金达威活性炭科技有限公司 | A kind of processing method of adding the water purifier granular activated carbon of shitosan |
| CN108745299A (en) * | 2018-05-17 | 2018-11-06 | 菏泽学院 | A kind of preparation method of special appearance adsorbent |
| CN109876780A (en) * | 2019-02-02 | 2019-06-14 | 杭州师范大学 | A kind of dephosphorization adsorbent and preparation method thereof |
| 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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| Publication number | Publication date |
|---|---|
| CN1204055C (en) | 2005-06-01 |
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