A kind of composite adsorbent and preparation method thereof

A composite adsorption and adsorbent technology, applied in the fields of biochemical equipment and methods, selective adsorption, chemical instruments and methods, etc., can solve the problems of resource waste and environmental pollution, and achieve improved buffer capacity, high retention effect, and reduced mobility. and bioavailability effects

Active Publication Date: 2020-06-05
广州鑫材科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The treatment methods of medicinal residues are mainly incineration and landfill, which not only pollute the environment, but also cause a certain degree of waste of resources

Method used

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  • A kind of composite adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 23.5g of ferrous ammonium sulfate, dissolve it in 250mL of boiled deionized water, put it into a 500mL round bottom flask, adjust the pH value to 2~3 with 1.0mol / L hydrochloric acid; add chitosan (deacetylation degree ≥ 85 %, Jinan Haidebei Marine Bioengineering Co., Ltd.) 0.5g, stir with a stirrer, filter after reacting for 3h, add an equal volume of absolute ethanol to the filtrate and let it stand for 12h, filter after the product precipitates, wash the precipitated product with 50wt% ethanol The product was obtained as a light yellow solid, which was dried in a 40°C drying oven. The yield of the chitosan cross-linked adsorbent prepared in this embodiment is 73%.

[0032] Andrographis paniculata dregs are dried to water content and are 5%, crude fiber 20.4g / 100g, crude protein 13.6g / 100g, pulverize, and powder granularity is 10 orders, takes by weighing 15g; Bran 7.5g, wherein medicinal dregs: bran= 2:1; 0.12g of corn flour, 0.15g of ammonium chloride, 0.05g of...

Embodiment 2

[0037] Take 23.5g of ferrous ammonium sulfate, dissolve it in 250mL of boiled deionized water, put it into a 500mL round bottom flask, adjust the pH value to 2-3 with 1.0mol / L hydrochloric acid; add chitosan (deacetylation degree ≥ 92 %, Shandong Laizhou Haili Biological Products Co., Ltd.) 0.5g, stir with a stirrer, filter after reacting for 3h, add an equal volume of absolute ethanol to the filtrate and let it stand for 12h, filter after the product precipitates, wash the precipitated product with 50wt% ethanol , a pale yellow solid was obtained, which was dried in a drying oven at 40°C. The yield of the chitosan crosslinked adsorbent that present embodiment makes is 85%.

[0038] Andrographis paniculata dregs are dried to a water content of 5%, crude fiber 20.4g / 100g, crude protein 13.6g / 100g, pulverized, powder particle size is 10 orders, takes by weighing 15g; bran 15g, wherein dregs: bran=1 : 1; corn flour 0.10g, ammonium chloride 0.2g, potassium dihydrogen phosphate 0....

Embodiment 3

[0043] Using the method of Example 2, chitosan cross-linked adsorbent and microbial fermentation of Andrographis paniculata dregs were prepared. The prepared chitosan cross-linked adsorbent is mixed with the fermentation product of medicinal dregs at a ratio of 1:1 to obtain a composite adsorbent. The impregnation process is used to adsorb heavy metals, the treatment liquid is the extract of Chuanxiong Rhizoma, the amount of adsorbent is 0.50g / mL, the adsorption time is 120min, the temperature is 37°C, the adsorption rate of Pb is 97.0%, the adsorption rate of Cu is 91.2%, and the adsorption rate of Cd is 94.5%. , Ligustrazine content retention rate can reach 80.6%.

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Abstract

The invention discloses a composite adsorbent and a preparation method thereof. The composite adsorbent is formed by mixing chitosan cross-linked adsorbent and the fermentation product of Andrographis paniculata paniculata according to the weight ratio of 2-3:1; the chitosan cross-linked adsorbent is made by reacting obtained; the fermented product of Andrographis paniculata dregs is obtained by fermenting the Andrographis paniculata dregs culture medium through secondary seeds of Bacillus subtilis species. The preparation method is as follows: respectively preparing chitosan cross-linking adsorbent and fermented product of andrographis paniculata, and then mixing the chitosan cross-linked adsorbent and the fermented product of andrographis paniculata in proportion to obtain the composite adsorbent. The composite adsorbent of the present invention has a good adsorption effect on heavy metals lead, cadmium, and copper in the production process of traditional Chinese medicine, and at the same time, the retention effect of the active ingredients of traditional Chinese medicine is also very high, which is of great significance for improving the quality of traditional Chinese medicine preparations and controlling heavy metal ion pollution. .

Description

technical field [0001] The invention relates to a composite adsorbent and a preparation method thereof, belonging to the technical field of adsorbents. Background technique [0002] There are two main sources of heavy metals in traditional Chinese medicine: one is for the purpose of treatment, adding mineral medicines containing heavy metals, such as cinnabar and realgar, to the prescription; Exogenous pollution during transportation and preparation production. These two sources have caused the heavy metal content in traditional Chinese medicine to exceed the standard, which has become one of the focuses of the international community on the safety of traditional Chinese medicine, hindering the process of internationalization of traditional Chinese medicine. The over-the-counter heavy metal pollution should be strictly controlled to avoid the weakening of the efficacy of the heavy metals in traditional Chinese medicine and the physical damage to the drug users. The content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30B01D15/08C12P1/04C12R1/125
CPCB01D15/08B01J20/24C12P1/04C12N1/205C12R2001/125
Inventor 霍清杨晓方王玥
Owner 广州鑫材科技有限公司
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