CN105833845A - Preparation method of novel heavy metal chelate fiber - Google Patents
Preparation method of novel heavy metal chelate fiber Download PDFInfo
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- CN105833845A CN105833845A CN201510022367.8A CN201510022367A CN105833845A CN 105833845 A CN105833845 A CN 105833845A CN 201510022367 A CN201510022367 A CN 201510022367A CN 105833845 A CN105833845 A CN 105833845A
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Abstract
The invention discloses a preparation method of a novel heavy metal chelate absorbent fiber. The method comprises the steps of: amine source preparation, polyacrylonitrile fiber treatment, and amination reaction. The specific preparation method consists of: (1) amine source preparation: mixing hydroxylamine hydrochloride and sodium carbonate in a molar ratio of 1:1.5 and performing dissolution to obtain a solution, and controlling the concentration at 20-65g/L; (2) polyacrylonitrile fiber treatment: soaking polyacrylonitrile fiber in a 0.1mol/L sodium carbonate solution for 0.5h, activating fiber surface groups, using deionized water to conduct cleaning, performing drying, and carrying out aging for 24h for standby use; (3) amination reaction: heating the amine source solution to 85-90DEG C, adding the treated polyacrylonitrile fiber into the amine source solution to carry out amination reaction for 20min, then taking out fiber, conducting cleaning with deionized water, then performing drying with 70DEG C warm wind so as to obtain the heavy metal chelate absorbent fiber. The heavy metal chelate absorbent fiber prepared by the method provided by the invention has the ability of chelating adsorption of heavy metals, can reach a equilibrium absorption capacity of 180mg/g to divalent lead ions, at the same time, after adsorption, saturated fiber has good anti-elution ability, and heavy metal ions are not easy to fall off and reenter the solution system.
Description
Technical field
Patent of the present invention relates to the preparation method of a kind of chelate fibre, particularly relates to the preparation method of a kind of novel heavy metal chelate fibre.
Background technology
Heavy metal pollution is different from the pollution of other organic compound.Many organic compound can be made harmfulness reduce by the physics of nature own, chemistry or the purification of biology or released.And heavy metal has enriching, it is difficult to degrade in the environment.At present China is owing to, in the exploitation of heavy metal, smelting, the course of processing, causing the big gas and water of entrance such as many heavy metals such as lead, hydrargyrum, cadmium, cobalt etc., soil to cause serious environmental pollution.Such as the heavy metal discharged with waste water, even if concentration is little, it is possible to accumulate in algae and bed mud, adsorbed by fish and shellfish body surface, produces food chain and concentrate, thus cause public hazards.Heavy metal can occur strong interaction with protein and various enzyme in human body, make them lose activity, it is likely in some organ of human body enrichment, if it exceeds the tolerant limit of human body, human body acute poisoning, subacute poisoning, chronic poisoning etc. can be caused, people is known from experience and causes the biggest harm.
Summary of the invention
The purpose of the present invention is for the problem solving the heavy metal pollution in above-mentioned environmental pollution, it is provided that the preparation method of a kind of novel heavy metal chelate fibre.
The technical scheme is that the preparation method of a kind of novel heavy metal chelate fibre, its step includes: prepares amine source, process polyacrylonitrile fibre, aminating reaction, it is characterized in that: the preparation method of described a kind of novel heavy metal chelate fibre specifically: (1), prepare amine source: being dissolved as solution after using the oxammonium hydrochloride. of molar ratio 1:1.5 and sodium carbonate mixing, concentration controls 20～65g/L；(2) processing polyacrylonitrile fibre: soaked in the sodium carbonate liquor of 0.1mol/L 0.5 hour by polyacrylonitrile fibre, activated fiber surface group, use deionized water to clean, dry, ageing 24 is the most standby；(3) aminating reaction: amine source solution is heated to 85～90 DEG C, the polyacrylonitrile fibre after processing joins in the solution of amine source, carries out aminating reaction, reaction 20min, taking out fiber, after cleaning with deionized water, the warm braw through 70 DEG C is dried, and prepares heavy metal chelating fiber.
The invention has the beneficial effects as follows: use heavy metal chelating fiber prepared by said method, there is the ability of chelating Adsorption of Heavy Metals, the equilibrium adsorption capacity of 180mg/g can be reached for lead (II) ion, simultaneously, adsorb saturated after fiber there is preferable resistant to wash-off ability, heavy metal ion difficult drop-off reenters solution system.
Detailed description of the invention
(1) amine source, is prepared: being dissolved as solution after the oxammonium hydrochloride. of employing molar ratio 1:1.5 and sodium carbonate mixing, concentration controls 20～65g/L；(2) processing polyacrylonitrile fibre: soaked in the sodium carbonate liquor of 0.1mol/L 0.5 hour by polyacrylonitrile fibre, activated fiber surface group, use deionized water to clean, dry, ageing 24 is the most standby；(3) aminating reaction: amine source solution is heated to 85～90 DEG C, the polyacrylonitrile fibre after processing joins in the solution of amine source, carries out aminating reaction, reaction 20min, taking out fiber, after cleaning with deionized water, the warm braw through 70 DEG C is dried, and prepares heavy metal chelating fiber.
Claims (4)
1. a preparation method for novel heavy metal chelate fibre, its step includes: prepare amine source, process polyacrylonitrile fibre, aminating reaction, it is characterized in that: the preparation method of described a kind of novel heavy metal chelate fibre specifically:
(1) amine source, is prepared: being dissolved as solution after the oxammonium hydrochloride. of employing molar ratio 1:1.5 and sodium carbonate mixing, concentration controls 20～65g/L；
(2) processing polyacrylonitrile fibre: soaked in the sodium carbonate liquor of 0.1mol/L 0.5 hour by polyacrylonitrile fibre, activated fiber surface group, use deionized water to clean, dry, ageing 24 is the most standby；
(3) aminating reaction: amine source solution is heated to 85～90 DEG C, the polyacrylonitrile fibre after processing joins in the solution of amine source, carries out aminating reaction, reacts 20min, takes out fiber, and after cleaning with deionized water, the warm braw through 70 DEG C is dried.
2. according to claim 1, it is characterised in that: the preparation method of described a kind of novel heavy metal chelate fibre, is to utilize oxammonium hydrochloride. and sodium carbonate mixture as amine source.
3. according to claim 1, it is characterised in that: the preparation method of described a kind of novel heavy metal chelate fibre, be aminating reaction temperature be 85～90 DEG C, the response time is 20min.
4. according to claims 1 to 3, it is characterised in that: the preparation method of described a kind of novel heavy metal chelate fibre, is after preparing amine source, processing polyacrylonitrile fibre, aminating reaction step, the heavy metal chelating fiber prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510022367.8A CN105833845A (en) | 2015-01-16 | 2015-01-16 | Preparation method of novel heavy metal chelate fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510022367.8A CN105833845A (en) | 2015-01-16 | 2015-01-16 | Preparation method of novel heavy metal chelate fiber |
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| CN105833845A true CN105833845A (en) | 2016-08-10 |
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| CN201510022367.8A Pending CN105833845A (en) | 2015-01-16 | 2015-01-16 | Preparation method of novel heavy metal chelate fiber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268702A (en) * | 2016-10-10 | 2017-01-04 | 天津工业大学 | A kind of based on the method for mercury ion in thiazole functionalization superfine fibre fast selective absorption water |
| CN106824138A (en) * | 2017-03-21 | 2017-06-13 | 四川大学 | A kind of cross-linking type polyacrylonitrile-radical amidoxim fiber and its preparation method and application |
| CN107855119A (en) * | 2017-11-09 | 2018-03-30 | 哈尔滨工业大学 | A kind of preparation method and applications of adsorbable and identification heavy metal ion discoloration chelant material |
| CN110449141A (en) * | 2019-09-10 | 2019-11-15 | 江苏中科睿赛环境工程有限公司 | A kind of preparation method of polyacrylonitrile fibre organic waste-gas adsorbant, adsorbent equipment and adsorption method using it |
| CN111632432A (en) * | 2020-06-13 | 2020-09-08 | 安徽新育轩环保科技有限公司 | Plush filter cloth for heavy metal ion sewage treatment |
-
2015
- 2015-01-16 CN CN201510022367.8A patent/CN105833845A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268702A (en) * | 2016-10-10 | 2017-01-04 | 天津工业大学 | A kind of based on the method for mercury ion in thiazole functionalization superfine fibre fast selective absorption water |
| CN106824138A (en) * | 2017-03-21 | 2017-06-13 | 四川大学 | A kind of cross-linking type polyacrylonitrile-radical amidoxim fiber and its preparation method and application |
| CN107855119A (en) * | 2017-11-09 | 2018-03-30 | 哈尔滨工业大学 | A kind of preparation method and applications of adsorbable and identification heavy metal ion discoloration chelant material |
| CN107855119B (en) * | 2017-11-09 | 2019-06-28 | 哈尔滨工业大学 | A kind of preparation method and applications of adsorbable and identification heavy metal ion discoloration chelating material |
| CN110449141A (en) * | 2019-09-10 | 2019-11-15 | 江苏中科睿赛环境工程有限公司 | A kind of preparation method of polyacrylonitrile fibre organic waste-gas adsorbant, adsorbent equipment and adsorption method using it |
| CN110449141B (en) * | 2019-09-10 | 2022-04-19 | 江苏中科睿赛环境工程有限公司 | Preparation method of polyacrylonitrile fiber organic waste gas adsorbent, adsorption device using polyacrylonitrile fiber organic waste gas adsorbent and adsorption method |
| CN111632432A (en) * | 2020-06-13 | 2020-09-08 | 安徽新育轩环保科技有限公司 | Plush filter cloth for heavy metal ion sewage treatment |
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Application publication date: 20160810 |