Application of a molecular sieve adsorption material in the removal of heavy metals in traditional Chinese medicine
A technology of adsorption material and molecular sieve, which is applied in the field of traditional Chinese medicine to remove harmful heavy metals, and can solve the problem of loss of fat-soluble components of traditional Chinese medicine.
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Embodiment l
[0028] Removal of Heavy Metals by Suspension of Licorice Extract
[0029] The process of molecular sieve adsorption material: the raw powder of 13X molecular sieve (silicon to aluminum ratio 2.7) is activated at 350°C for 2 hours; suspended in 1~2moL / LCaCl 2 Soak in the solution for 48 hours, take out the molecular sieve, wash the surface with water for 3 times, dry it at 110-150°C for 1 hour, mix it with 1 / 20-1 / 10 mass of alumina activation powder, spray a small amount of water, and extrude After being shaped into strips, it was activated at 450°C for more than 1 hour. After being pulverized by a pulverizer, the particles of 20 mesh to 200 mesh were screened out for subsequent experiments.
[0030]Suspension of licorice extract to remove heavy metals: According to the production process of licorice extract, 100g of licorice was extracted with water twice, and the combined extract was about 1.4L, and standard solutions of copper, cadmium, lead, mercury, and arsenic were added ...
Embodiment 2
[0046] Removal of Heavy Metals by Adsorption Column of Licorice Extract Solution
[0047] The process of molecular sieve adsorption material: the raw powder of 13X molecular sieve (silicon to aluminum ratio 2.9) was activated at 450°C for 8 hours; suspended in 1~2moL / L Ca(NO 3 ) 2 Soak in the solution for more than 10 hours, take out the molecular sieve, wash the surface with water for 3 times, dry it at 110-150°C for 1 hour, spray a small amount of water with 1 / 20-1 / 10 of the mass of silica gel adhesive, and pass through the rolling ball mechanism Form into a spherical shape with a particle size of 0.8-1.2mm, place it at 450°C for activation for more than 1 hour, and use it for subsequent experiments.
[0048] The adsorption column of licorice extract solution removes heavy metals: 100g of licorice extract is dissolved in 800mL of hot water, and 500mL of ethanol is added according to the volume for precipitation. The heavy metals in the paste exceeded the standard by 2 time...
Embodiment 3
[0064] Removal of Heavy Metals by Adsorption Column of Banlangen Extract
[0065] The process of molecular sieve adsorption material: the raw powder of 10X molecular sieve (silicon to aluminum ratio 2.6) is activated at 550°C for more than 1 hour; suspended in 2moL / L Ca(NO 3 ) 2 Soak in the solution for more than 10 hours, take out the molecular sieve, wash the surface with water for 3 times, dry it at 110-150°C for 1 hour, spray a small amount of water with 1 / 20-1 / 10 mass of baked adhesive, and pass through the rolling ball Machine into spherical shape with a particle size of 0.8-1.2 mm, and activate at 450°C for more than 1 hour for subsequent experiments.
[0066] Removal of heavy metals by adsorption column of Radix isatidis extract: slice 100g of Radix Radix Radix, extract twice with water, combine 1.4L of extracts, add 500mL of ethanol for precipitation according to volume, and add copper, cadmium, lead, mercury, arsenic to the filtered solution of about 1.8L The stand...
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