CN104815618A - Preparation method of astragalus residue bio-absorbent - Google Patents
Preparation method of astragalus residue bio-absorbent Download PDFInfo
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- CN104815618A CN104815618A CN201510204377.3A CN201510204377A CN104815618A CN 104815618 A CN104815618 A CN 104815618A CN 201510204377 A CN201510204377 A CN 201510204377A CN 104815618 A CN104815618 A CN 104815618A
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- radix astragali
- waste residue
- astragalus
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- astragali waste
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Abstract
The invention relates to a preparation method of astragalus residue bio-absorbent. The method includes the steps of firstly, washing astragalus residues with tap water and distilled water, drying, pulverizing, and screening the astragalus residues with 40-mesh screen for standby; secondly, adding every 1g of pyromellitic acid dianhydride to 5-50mL of N, N-dimethyl formamide, and dissolving; thirdly, adding every 1g of pyromellitic acid dianhydride to 0.1-1.0g of astragalus residues, and reacting for 1-8 hours under 30-100 DEG C; fourthly, performing suction filtration, and sequentially washing with N, N-dimethyl formamide, 0.1-0.2moL/L NaOH solution, distilled water and anhydrous ethanol; fifthly, drying. The method has the advantages that the astragalus residues are used as raw materials and prepared into the metal ion bio-absorbent through chemical modification, and a new approach is provided to the recycling and deep utilization of the astragalus residues.
Description
Technical field
The present invention relates to a kind of preparation method of Radix Astragali waste residue biological adsorption agent.
Background technology
Waste water has the feature that high chemical oxygen demand, organic principle are complicated, microbial degradation degree is low.In processing method conventional at present, absorption method is most widely used.Conventional adsorbent has granular active carbon, active diatom soil and resin etc.Develop inexpensive, be easy to get, the renewable or non-renewable adsorbent of high-adsorption-capacity is extremely urgent.
China is that natural resources of Chinese medicinal materials consumes big country, and also create a large amount of Chinese medicine dregs thus, the form of the early time treatment dregs of a decoction mainly comprises landfill, burns, and FX is stacked.This not only consumes substantial contribution, also causes resource to waste in a large number, serious environment pollution.The Radix Astragali is a kind of Chinese medicine relatively commonly used, its main component has the compounds such as polysaccharide, saponins, flavonoids and amino acids, along with the extraction of these active ingredients, create a large amount of Radix Astragali waste residues, its main component is plant cellulose and lignin etc., and these molecular surfaces contain great amount of hydroxy group, carboxyl isoreactivity functional group.
Summary of the invention
The object of this invention is to provide a kind of preparation method of Radix Astragali waste residue biological adsorption agent, efficient adsorbent for heavy metal can be obtained, for the resource of Radix Astragali waste residue and deep exploitation provide a new way.
A preparation method for Radix Astragali waste residue biological adsorption agent, its special feature is, comprises the steps:
(1) get Radix Astragali waste residue first with running water cleaning, then with distilled water cleaning, dry, cross 40 mesh sieves after pulverizing for subsequent use;
(2) add according to the ratio every 1g pyromellitic acid anhydride being added 5-50mL DMF, then dissolve;
(3) until completely dissolved, the ratio adding 0.1-1.0g Radix Astragali waste residue according to every 1g pyromellitic acid anhydride adds Radix Astragali waste residue, then at 30-100 DEG C, reacts 1-8h;
(4) suction filtration, then uses DMF successively, the NaOH solution of 0.1-0.2moL/L, distilled water and absolute ethanol washing product;
(5) product is dried, obtain the Radix Astragali waste residue biological adsorption agent of pyromellitic acid anhydride modification.
In step (2), dissolving specifically adopts ultrasonic dissolution in confined conditions.
In step (5), oven dry refers to and is placed in baking oven 70-80 DEG C of dry 8-12h.
The inventive method utilizes Radix Astragali waste residue and pyromellitic acid anhydride to react, the group with heavy metal ion sequestering power can be introduced in Radix Astragali waste residue by the esterification of hydroxyl, obtained efficient adsorbent for heavy metal, and determine that best preparation process condition is to prepare modification Radix Astragali waste residue biological adsorption agent.The inventive method is with Radix Astragali waste residue for raw material, is prepared into the biological adsorption agent of heavy metal ion by chemical modification, for the resource of Radix Astragali waste residue and deep exploitation provide a new way.
Detailed description of the invention
Method of the present invention for raw material with the Radix Astragali waste residue after water extraction astragalus polyose, is carried out chemical modification by the method for esterification to it, is prepared the biological adsorption agent that absorption property is higher, while protection of the environment, also for the comprehensive utilization of Radix Astragali waste residue provides new way.Specifically carry out chemical modification with pyromellitic acid anhydride to Radix Astragali waste residue, prepare Radix Astragali waste residue biological adsorption agent, operating procedure is: pyromellitic acid anhydride is added N, in dinethylformamide, ultrasonic dissolution, adds dry Radix Astragali waste residue, after reaction, suction filtration, uses DMF successively, NaOH solution, distilled water and absolute ethanol washing, dry, obtain the Radix Astragali waste residue biological adsorption agent of pyromellitic acid anhydride modification.
Embodiment 1:
The preparation of pyromellitic acid anhydride modification Radix Astragali waste residue biological adsorption agent:
(1) Radix Astragali waste residue after astragalus polyose is carried in water intaking, first repeatedly cleans with running water, and then after repeatedly cleaning up with distilled water, to place in baking oven 70 DEG C and dries 12h, pulverize, cross 40 mesh sieves, store, for subsequent use.
(2) 1.0g pyromellitic acid anhydride is added in 25mL DMF, in confined conditions ultrasonic dissolution (ultrasonic power: 400w, frequency: 40KHz).
(3) Radix Astragali waste residue of 0.5g drying is added until completely dissolved, in 70 DEG C of reaction 2h.
(4) suction filtration, uses DMF successively, 0.1moL/L NaOH solution, and distilled water and absolute ethanol washing product, washing times is 2 times.
(5) product is placed in baking oven 70 DEG C of dry 12h, obtains the Radix Astragali waste residue biological adsorption agent of pyromellitic acid anhydride modification, store, for subsequent use.
(6) get containing Pb
2+concentration is 500mg/L, containing Cu
2+concentration is 100mg/L, be 500mg/L containing methylene blue concentration and be the solution 20mL of 1000mg/L containing dimethyl diaminophenazine chloride concentration, and add the anhydride modified Radix Astragali waste residue biological adsorption agent of the above-mentioned preparation of 2.0g, 1.2g, 2.0g, 1.2g respectively, absorption 1h, detection draws, Pb
2+clearance be 99.53%, Cu
2+clearance be 99.49%, the clearance of methylene blue is 99.47%, and the clearance of dimethyl diaminophenazine chloride is 99.78%.
Claims (3)
1. a preparation method for Radix Astragali waste residue biological adsorption agent, is characterized in that, comprises the steps:
(1) get Radix Astragali waste residue first with running water cleaning, then with distilled water cleaning, dry, cross 40 mesh sieves after pulverizing for subsequent use;
(2) add according to the ratio every 1g pyromellitic acid anhydride being added 5-50mL DMF, then dissolve;
(3) until completely dissolved, the ratio adding 0.1-1.0g Radix Astragali waste residue according to every 1g pyromellitic acid anhydride adds Radix Astragali waste residue, then at 30-100 DEG C, reacts 1-8h;
(4) suction filtration, then uses DMF successively, the NaOH solution of 0.1-0.2moL/L, distilled water and absolute ethanol washing product;
(5) product is dried, obtain the Radix Astragali waste residue biological adsorption agent of pyromellitic acid anhydride modification.
2. the preparation method of Radix Astragali waste residue biological adsorption agent as claimed in claim 1, is characterized in that: in step (2), dissolving specifically adopts ultrasonic dissolution in confined conditions.
3. the preparation method of Radix Astragali waste residue biological adsorption agent as claimed in claim 1, is characterized in that: in step (5), oven dry refers to and is placed in baking oven 70-80 DEG C of dry 8-12h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510204377.3A CN104815618A (en) | 2015-04-27 | 2015-04-27 | Preparation method of astragalus residue bio-absorbent |
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| CN201510204377.3A CN104815618A (en) | 2015-04-27 | 2015-04-27 | Preparation method of astragalus residue bio-absorbent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473632A (en) * | 2020-12-10 | 2021-03-12 | 武汉工程大学 | Arsenic removal method for preparing biological adsorbent by using traditional Chinese medicine waste residues |
| CN113231011A (en) * | 2020-04-15 | 2021-08-10 | 漳州卫生职业学院 | Method for preparing adsorbing material from astragalus waste residue and application of adsorbing material |
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| CN103566907A (en) * | 2013-11-13 | 2014-02-12 | 济南大学 | Preparation method and application of pyromellitic dianhydride modified loofah sponge adsorbent |
| CN103566908A (en) * | 2013-11-13 | 2014-02-12 | 济南大学 | Preparation method and application of pyromellitic dianhydride modified coconut shell adsorbent |
| CN103920468A (en) * | 2014-05-06 | 2014-07-16 | 济南大学 | Preparation method of ionic liquid-loaded palm tree bark adsorbent |
| CN104289191A (en) * | 2014-09-10 | 2015-01-21 | 济南大学 | Preparation method of ionic liquid immobilized porous glucan gel adsorbent |
| CN104289188A (en) * | 2014-09-10 | 2015-01-21 | 济南大学 | Preparation of pyromellitic dianhydride modified banana peel adsorbent |
-
2015
- 2015-04-27 CN CN201510204377.3A patent/CN104815618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566907A (en) * | 2013-11-13 | 2014-02-12 | 济南大学 | Preparation method and application of pyromellitic dianhydride modified loofah sponge adsorbent |
| CN103566908A (en) * | 2013-11-13 | 2014-02-12 | 济南大学 | Preparation method and application of pyromellitic dianhydride modified coconut shell adsorbent |
| CN103920468A (en) * | 2014-05-06 | 2014-07-16 | 济南大学 | Preparation method of ionic liquid-loaded palm tree bark adsorbent |
| CN104289191A (en) * | 2014-09-10 | 2015-01-21 | 济南大学 | Preparation method of ionic liquid immobilized porous glucan gel adsorbent |
| CN104289188A (en) * | 2014-09-10 | 2015-01-21 | 济南大学 | Preparation of pyromellitic dianhydride modified banana peel adsorbent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113231011A (en) * | 2020-04-15 | 2021-08-10 | 漳州卫生职业学院 | Method for preparing adsorbing material from astragalus waste residue and application of adsorbing material |
| CN112473632A (en) * | 2020-12-10 | 2021-03-12 | 武汉工程大学 | Arsenic removal method for preparing biological adsorbent by using traditional Chinese medicine waste residues |
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20150805 |