CN102600807A - Adsorption material capable of adsorbing heavy metals by using modified silk, and preparation method of adsorption material - Google Patents
Adsorption material capable of adsorbing heavy metals by using modified silk, and preparation method of adsorption material Download PDFInfo
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- CN102600807A CN102600807A CN2012101173973A CN201210117397A CN102600807A CN 102600807 A CN102600807 A CN 102600807A CN 2012101173973 A CN2012101173973 A CN 2012101173973A CN 201210117397 A CN201210117397 A CN 201210117397A CN 102600807 A CN102600807 A CN 102600807A
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Abstract
The invention discloses an adsorption material capable of adsorbing heavy metals by using modified silk, and a preparation method of the adsorption material. The preparation method comprises the followings steps of: (1) preparing a tannin-containing aqueous solution with a concentration of 1 to 20g/L by a conventional method; (2) at a temperature of 20 to 40 DEG C, impregnating frison with the tannin aqueous solution for 48 hours according to a solid-liquid ratio of 1:1, taking the frison out and cleaning the frison with water; (3) drying the frison at a temperature of 60 DEG C to obtain the adsorption material, and adding the tannin into the solution appropriately so that the solution is repeatedly used; and (4) after adsorption saturation reaches a leakage point, taking 0.01mol / L acidic solution as an eluent to flow through an adsorbent at a flow rate of 1BV/h, and washing with water until the pH value is 5 so as to complete the regeneration of the adsorbent. The adsorption material and the preparation method of the adsorption material disclosed by the invention have the advantages that: the raw material source is wide; the preparation method of the adsorbent is simple and easy to implement without discharge of 'three wastes' (waste gas, waste water and waste residues); the tannin has stronger chelating ability on common heavy metals, quicker adsorption rate on the heavy metals, and is simple and convenient for eluting of reclaimed rubber; and the method is strong in practicality and low in cost.
Description
Technical field
The present invention relates to sorbing material, specifically is a kind of sorbing material that adsorbs heavy metal with modification silk and preparation method thereof.
Background technology
Heavy metal gets into behind the environment can not be by biodegradation, but participates in the circulation of food chain, and finally enrichment in vivo, destroys the normal physiological metabolism activity of organism, is detrimental to health.How effectively to administer heavy metal pollution and become the human common problem of paying close attention to.Seek the process for treating heavy-metal waste water of safety economy, to reduce or eliminate the accumulation of heavy metal in environment, be one of focus and difficult point problem of polluting the control research field always.
Physicochemical treatment method is proved to be the most effectively one of heavy metal processing method, mainly comprises chemical precipitation, absorption, ion-exchange, ferrite process etc.
Absorption method is to use a kind of method that multiple porous sorbing material is removed heavy metal ions in wastewater.The core of absorption method is the selection of adsorbent.Active carbon is high to removal rate of heavy metal, but processing cost is higher, thereby application is restricted.In this respect research in recent years mainly concentrates on seeks novel cheap sorbing material, and still, these materials often adsorption efficiency are not high, produces the solid waste that receives heavy metal pollution in a large number simultaneously, and the subsequent treatment difficulty is big.
Summary of the invention
It is low to the objective of the invention is to disclose a kind of cost, and efficient is high, and technology is simple, and is easy and simple to handle, is convenient to sorbing material that adsorbs heavy metal with modification silk of industrial applications and preparation method thereof.
The technical scheme that realizes the object of the invention is:
With tannin silk cocoon, silk, filature byproduct are carried out chemical modification like longly tell, basinetto silk etc., obtain adsorbing the sorbing material of heavy metal, with the Cu in this sorbing material absorption waste water
2+, Hg
2+, Pb
2+, Cd
2+, Zn
2+In heavy metal.
A kind of preparation method of adsorbing the sorbing material of heavy metal with modification silk comprises the steps:
(1) contains the tannin aqueous solution by well-established law compound concentration 1～20 g/L;
(2) under 20～40 ℃ of temperature, told 48 hours with the clean length of tannin aqueous solution dipping by 1 ︰, 10 solid-to-liquid ratios, take out long telling and clean with clear water;
(3) oven dry promptly gets sorbing material under 60 ℃ of temperature, and solution can use after suitably replenishing tannin repeatedly;
(4) absorption is saturated reach leakage point after, use the 0.01mol/L acid solution to be eluent, flow through adsorbent with the flow velocity of 1 BV/h, it is 5 that water is washed till pH, promptly accomplishes the regeneration of adsorbent.
During use, with water logging bubble activation 24 hours, with the sorbing material adsorption column of packing into, adjustment heavy metal-containing waste water pH was 5～7 by conventional method with sorbing material, flow through adsorption column with the flow velocity of 1～2 BV/h.
Described tannin is also claimed plant polyphenol, comprises the polyphenol monomer or the mixture that extract from each position of each kind of plant, and the material that contains vegatable tannin, like the juice of common various tannin extracts, vegetable tanning agent, the plant that contains tannin and fruit etc.
This sorbing material is through testing: in the pH value is 6, and temperature is 25 ℃, and adsorption time is 5 hours, to Ag
+Absorption greater than 120mg.g
-1To Cu
2+Absorption greater than 80mg.g
-1To Cd
2+Absorption greater than 60mg.g
-1, be more than two times of unmodified silk adsorbance;
Advantage of the present invention
1, silk cocoon (silk) and filature byproduct are pure natural substance like long tell, basinetto silk etc., and tannin also is a pure natural modifier, and wide material sources;
2, the adsorbent preparation method is simple, does not have three waste discharge;
3, tannin all has stronger sequestering power to common heavy metal, and is very fast to the rate of adsorption of heavy metal, the wash-out reclaimed rubber is simple and convenient;
4, method is practical, and cost is relatively low.
The specific embodiment
Enumerate two non-limiting embodiment below and further specify technical scheme of the present invention.
Embodiment 1:
A kind of preparation method of adsorbing the sorbing material of heavy metal with modification silk comprises the steps:
(1) prepares the aqueous solution that contains tannin 10g/L with surplus mandarin orange tannin extract (containing tannin 70%).
(2) under 20～40 ℃ of temperature, told 48 hours with the clean length of tannin aqueous solution dipping by the 1:10 solid-to-liquid ratio, take out long telling and clean with clear water;
(3) oven dry promptly gets modification silk sorbing material under 60 ℃ of temperature;
(4) absorption is saturated reach leakage point after, use 0.01mol/LHCl solution to be eluent, flow through adsorption column with the flow velocity of 1 BV/h, water is washed till pH and 5 promptly accomplishes the regeneration of adsorption column.
Embodiment 2:
A kind of preparation method of adsorbing the sorbing material of heavy metal with modification silk comprises the steps:
(1) squeeze the juice with semi-matured persimmon and filter make it to clarify subsequent use.
(2) with the silk cocoon wadding that in hot water, draws wire after softening.
(3) under 20～40 ℃ of temperature, press the 1:10 solid-to-liquid ratio and wadded a quilt with cotton 48 hours with persimmon juice dipping silk cocoon silk, take out long telling and clean with clear water;
(4) oven dry promptly gets modification silk sorbing material under 60 ℃ of temperature.
All the other are with embodiment 1.
This sorbing material is through testing: in the pH value is 6, and temperature is 25 ℃, and adsorption time is 5 hours, to Ag
+Absorption greater than 120mg.g
-1; To Cu
2+Absorption greater than 80mg.g
-1; To Cd
2+Absorption greater than 60mg.g
-1, be more than two times of unmodified silk adsorbance.
Claims (2)
1. the preparation method with the sorbing material of modification silk absorption heavy metal comprises the steps:
(1) contains the tannin aqueous solution by well-established law compound concentration 1～20 g/L;
(2) under 20～40 ℃ of temperature, told 48 hours with the clean length of tannin aqueous solution dipping by 1 ︰, 10 solid-to-liquid ratios, take out long telling and clean with clear water;
(3) oven dry promptly gets sorbing material under 60 ℃ of temperature, and solution can use after suitably replenishing tannin repeatedly;
(4) absorption is saturated reach leakage point after, use the 0.01mol/L acid solution to be eluent, flow through adsorbent with the flow velocity of 1 BV/h, it is 5 that water is washed till pH, promptly accomplishes the regeneration of adsorbent.
2. the sorbing material for preparing with the described preparation method of claim 1 with modification silk absorption heavy metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101173973A CN102600807A (en) | 2012-04-20 | 2012-04-20 | Adsorption material capable of adsorbing heavy metals by using modified silk, and preparation method of adsorption material |
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| CN2012101173973A CN102600807A (en) | 2012-04-20 | 2012-04-20 | Adsorption material capable of adsorbing heavy metals by using modified silk, and preparation method of adsorption material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920467A (en) * | 2014-05-06 | 2014-07-16 | 济南大学 | Preparation method and application of sulfydryl silk adsorbent |
| CN103920469A (en) * | 2014-05-06 | 2014-07-16 | 济南大学 | Preparation method of citric acid silk adsorbent |
| CN105195223A (en) * | 2015-09-16 | 2015-12-30 | 天津工业大学 | Silk fiber iron complex photocatalyst and preparation method thereof |
| CN106268683A (en) * | 2016-10-20 | 2017-01-04 | 贺州学院 | A kind of silk fiber prepares the method for heavy-metal adsorption material |
| CN108083408A (en) * | 2017-12-22 | 2018-05-29 | 苏州艾捷尔斯生物科技有限公司 | A kind of Wastewater treatment agent for paper mill and its preparation method and application |
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| JPH07313870A (en) * | 1994-05-24 | 1995-12-05 | Rengo Co Ltd | Water-insoluble tannin adsorbent and its production |
| CN102205232A (en) * | 2011-03-25 | 2011-10-05 | 东北林业大学 | Development of larch tannin metal ion absorbing agent |
| CN102266754A (en) * | 2011-07-29 | 2011-12-07 | 湖北食为天药业科技有限公司 | Method for preparing activated carbon-persimmon tannin compound absorbent |
-
2012
- 2012-04-20 CN CN2012101173973A patent/CN102600807A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| JPH07313870A (en) * | 1994-05-24 | 1995-12-05 | Rengo Co Ltd | Water-insoluble tannin adsorbent and its production |
| CN102205232A (en) * | 2011-03-25 | 2011-10-05 | 东北林业大学 | Development of larch tannin metal ion absorbing agent |
| CN102266754A (en) * | 2011-07-29 | 2011-12-07 | 湖北食为天药业科技有限公司 | Method for preparing activated carbon-persimmon tannin compound absorbent |
Non-Patent Citations (1)
| Title |
|---|
| T. ARAI, ET AL.: "Absorption of metal cations by modified B. mori silk and preparation of fabrics with antimicrobial activity", 《JOURNAL OF APPLIED POLYMER SCIENCE》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920467A (en) * | 2014-05-06 | 2014-07-16 | 济南大学 | Preparation method and application of sulfydryl silk adsorbent |
| CN103920469A (en) * | 2014-05-06 | 2014-07-16 | 济南大学 | Preparation method of citric acid silk adsorbent |
| CN103920467B (en) * | 2014-05-06 | 2016-03-02 | 济南大学 | A kind of preparation method of sulfydryl silk adsorbent and application |
| CN105195223A (en) * | 2015-09-16 | 2015-12-30 | 天津工业大学 | Silk fiber iron complex photocatalyst and preparation method thereof |
| CN106268683A (en) * | 2016-10-20 | 2017-01-04 | 贺州学院 | A kind of silk fiber prepares the method for heavy-metal adsorption material |
| CN106268683B (en) * | 2016-10-20 | 2019-02-01 | 贺州学院 | A kind of method of silk fiber preparation heavy-metal adsorption material |
| CN108083408A (en) * | 2017-12-22 | 2018-05-29 | 苏州艾捷尔斯生物科技有限公司 | A kind of Wastewater treatment agent for paper mill and its preparation method and application |
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Application publication date: 20120725 |