A method for removing heavy metals in traditional Chinese medicine by using zeolite molecular sieve membrane

A technology of zeolite molecular sieve membrane and heavy metals, which is applied in chemical instruments and methods, materials of anion exchangers, and devices for making medicines into special physical or oral forms, etc., to achieve the effects of being beneficial to the popularization of technology and low preparation cost.

Active Publication Date: 2017-07-14
SHANGHAI LVQIANG NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the use of zeolite molecular sieve membranes for the removal of heavy metals in traditional Chinese medicine extracts.

Method used

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  • A method for removing heavy metals in traditional Chinese medicine by using zeolite molecular sieve membrane
  • A method for removing heavy metals in traditional Chinese medicine by using zeolite molecular sieve membrane
  • A method for removing heavy metals in traditional Chinese medicine by using zeolite molecular sieve membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Using 13X molecular sieve membrane to remove heavy metals in Danshen extract includes the following steps:

[0045] (1) Preparation of Salvia miltiorrhiza extract: take 100 g of dried Chinese herbal medicine Danshen tablet, place it in 800 mL of deionized water for extraction for 2 hours, and extract at a temperature of 50° C. Filtrate, get the filtrate, vacuum concentrate to 200mL, add industrial alcohol (food grade, mass fraction 95%) to it, detect that the extractant therein is 0.1wt%, fully stir, filter, get clarified filtrate, get 500mL extract and carry out follow-up Heavy metal removal experiment.

[0046] (2) Preparation of 13X molecular sieve membrane: a. select porous alumina ceramics as the porous carrier, the pore diameter of the porous alumina ceramics is 0.3 microns, the porous carrier is tubular, its outer diameter is 10 mm, the wall thickness is 2 mm, and the length is 50 mm , washing the surface of the carrier with 2% hydrochloric acid solution and 2% ...

Embodiment 2

[0081] Removal of Heavy Metals in Licorice Extract by 13X Molecular Sieve Membrane

[0082] Preparation of licorice extract: take 100 g of licorice slices, extract twice with 70% ethanol solution, each solvent dosage is 800 mL, and the extraction temperature is 50°C. Filter and combine the filtrates to obtain 1500 mL of clear filtrate. Take 500mL of licorice extract, and add copper, lead, and cadmium standard solutions to it to increase its content by 5mg / L, 1mg / L, and 1mg / L in sequence. The extracts added with heavy metals were used for subsequent experiments.

[0083] Preparation of 13X molecular sieve membrane: the carrier is a porous alumina hollow fiber (outer diameter 1mm, inner diameter 0.8mm, length 100mm, cut-off pore diameter 0.3 micron). The preparation method refers to Example 1, and the growth time of the 13X molecular sieve membrane is controlled so that the thickness of the finally obtained molecular sieve membrane is 10 microns. Use about 500 molecular sieve m...

Embodiment 3

[0091] Removal of Heavy Metals in Radix Radix Radix Extract by NaA Molecular Sieve Membrane

[0092] Preparation of isatidis extract: 100g of isatidis slices, extracted twice with water, 800mL each time, combined with 1.5L of extract, added 500mL of ethanol for precipitation according to volume, and obtained 2L of extract after filtration. Take 500mL extract, add copper, lead and cadmium standard solutions to increase the content by 5mg / L, 1mg / L and 1mg / L in turn.

[0093] Preparation of NaA molecular sieve membrane: the carrier is porous alumina hollow fiber (outer diameter 5mm, inner diameter 3mm, length 100mm, cut-off pore diameter 0.3 micron). Wash the surface of the carrier with 2% hydrochloric acid solution, 2% NaOH solution in turn, and then wash the surface of the carrier with deionized water until neutral. Allow to dry at room temperature before use.

[0094] Prepare 10% NaA molecular sieve suspension, use a colloid mill to crush for 10 minutes, make the NaA molecul...

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Abstract

The invention relates to a method for removing heavy metals in traditional Chinese medicine by using a zeolite molecular sieve membrane, which comprises the following steps: (1) cleaning the surface of a porous carrier, and coating a seed crystal suspension on the surface of the porous carrier; After drying at a certain temperature, the porous carrier is placed in the crystal growth solution until the seed crystals on the surface of the porous carrier are produced into a film to obtain a zeolite molecular sieve membrane; (2) one side of the zeolite molecular sieve membrane prepared in step (1) The traditional Chinese medicine extract is circulated, and the complexing agent solution is circulated on the other side of the zeolite molecular sieve membrane to remove heavy metals in the traditional Chinese medicine extract. Compared with the prior art, the present invention has less adsorption to the active ingredients of traditional Chinese medicines, has selectivity to heavy metal ions, and has low cost, and adopts a continuous production process, which is beneficial to popularization and use of the technology.

Description

technical field [0001] The invention relates to the field of removing harmful heavy metals from traditional Chinese medicines and Chinese patent medicines, in particular to a method for removing heavy metals from traditional Chinese medicines by using zeolite molecular sieve membranes. Background technique [0002] Traditional Chinese medicine is the traditional medicine of our country and the treasure of the Chinese nation. Traditional Chinese medicine is called traditional Chinese medicine. Traditional Chinese medicine is paid more and more attention to because of advantages such as remarkable medicinal effect, little toxic and side effects. In recent years, my country's traditional Chinese medicine industry has developed rapidly. In 2012, the total output value of my country's traditional Chinese medicine industry reached 426.2 billion yuan, accounting for 25.0% of the total output value of the pharmaceutical industry. But from a global perspective, the development of m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D15/08B01D15/36B01D61/00A61J3/00
Inventor 余金鹏张春秀王鹏飞徐华胜张伏军夏思奇
Owner SHANGHAI LVQIANG NEW MATERIALS CO LTD
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