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Collagen fiber solid borne metallic ion adsorbing material, preparation method and purpose thereof

A technology for immobilizing metal ions and collagen fibers, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of difficult large-scale industrial application, slow adsorption and desorption, secondary pollution of metal salts, etc. The effect of fast desorption, no pollution to the environment, and simple process

Inactive Publication Date: 2005-03-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Many metal salts can interact with anions in water such as F - 、PO 4 3- , AsO 4 3- As well as dye binding or precipitation, but direct use of metal salts will bring secondary pollution
However, minerals containing metal ions are difficult to be applied in large-scale industries due to low adsorption capacity, slow adsorption and desorption speed, and unstable performance.

Method used

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  • Collagen fiber solid borne metallic ion adsorbing material, preparation method and purpose thereof
  • Collagen fiber solid borne metallic ion adsorbing material, preparation method and purpose thereof

Examples

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Effect test

Embodiment 1

[0031] The preparation method of embodiment 1 cowhide collagen fiber immobilized iron ion adsorption material

[0032] 1. Preparation of Granular Cowhide Collagen Fibers

[0033] Cowhide was selected as raw material, cleaned, alkali treated, skinned, dealkalized, demineralized and buffer treated, dehydrated, dried and ground according to conventional methods to obtain granular collagen fibers with an average particle size of 90 μm.

[0034] 2. Preparation of collagen fiber immobilized iron ion adsorption material

[0035] Add 30g of collagen fibers to a mixed solution consisting of 1ml of sulfuric acid (1mol / L), 2ml of formic acid (1mol / L), 2.5g of NaCl and 300ml of distilled water. The pH of the mixed solution is about 2.2, and 15g of iron sulfate is added after 12 hours After reacting at a temperature of 20-45°C for 4 hours under stirring conditions, add a sodium bicarbonate solution with a concentration of 0.5-1 g / L within 2 hours to make the pH of the solution around 4.0,...

Embodiment 2

[0036] Example 2 The preparation method of cowhide collagen fiber immobilized zirconium ion adsorption material

[0037] 1. Preparation of Granular Cowhide Collagen Fibers

[0038] Granular collagen fibers were prepared according to the method of Example 1.

[0039] 2. Preparation of collagen fiber immobilized zirconium ion adsorption material

[0040] Add 15g of collagen fibers to a mixed solution consisting of 0.5ml of sulfuric acid (1mol / L), 1ml of formic acid (1mol / L), 2g of sodium chloride and 200ml of distilled water. The pH of the mixed solution is about 1.8. Add sulfuric acid after 12 hours Zirconium 17g, after reacting for 4 hours at a temperature of 20-45°C under stirring conditions, add a sodium acetate solution with a concentration of 0.5-1g / L within 2 hours to make the pH of the solution about 3.5, react for another 4 hours, and let it stand for 12 hours , filtered and washed to remove unreacted ferric sulfate, and dried at a temperature of 50° C. for 12 hours t...

Embodiment 3

[0041] Embodiment 3 The preparation method of cowhide collagen fiber immobilized chromium ion adsorption material

[0042] 1. Preparation of granular bovine collagen fibers

[0043] Granular collagen fibers were prepared according to the method in Example 1.

[0044] 2. Preparation of Cowhide Collagen Fiber Immobilized Immobilized Chromium Ion Adsorption Material

[0045] Add 30g of collagen fibers to a mixed solution consisting of 0.5ml of sulfuric acid (1mol / L), 1ml of formic acid (1mol / L), 2g of sodium chloride and 300ml of distilled water. The pH of the mixed solution is about 1.9. Add sulfuric acid after 12 hours Chromium 5g, after reacting for 4 hours at a temperature of 20-45°C under stirring conditions, add a sodium acetate solution with a concentration of 0.5-1g / L within 2 hours to make the pH of the solution about 3.5, react for another 4 hours, and let it stand for 12 hours , filtered and washed to remove unreacted ferric sulfate, dried at a temperature of 50°C fo...

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Abstract

The invention relates to a kind of metal-ion absorption material with collagen fiber carrying and its manufacturing and usefulness. The feature is that it is manufactured with the stuff as follows: add 100-200 collagen fiber to the mixed solution of 0.1-1 sulfuric acid, 0.1-1 formic acid, 2-7 sodium chloride, and 1000-2000 distilled water; adjust PH of the solution to 1.5-3.3; after 12 hours, add 5-50 metallic salt; in condition of stirring and temperature of 20-45 centigrade, make it react 1-8 hours; after the reaction, in the following 1-8 hours, add 0.1-5 alkali solution with concentration of 0.5-1.0g to it; after reacting by 2-10 hours again, stand still by 12-24 hours; filtrate and wash it in order to remove the unreacted metallic salt; in the temperature of 40-70 centigrade, exsiccate it by 12-24 hours, and then we can take the collagen fiber carrying metal-ion absorption material; at last, after using DSC to measure the temperature, the temperature of the thermal alteration is 70-115 centigrade. The absorption material is mainly used for the absorption and separation of the negative ion, such as F<->, PO4<3->, AsO4<3-> and so on, in waste water and general water, in the fields of chemical engineering, metallurgy, textile, dye-printing and so on.

Description

1. Technical field [0001] The invention relates to a collagen fiber immobilized metal ion adsorption material, a preparation method and application thereof. 2. Background technology [0002] Fluoride can cause bone diseases. The national standard for fluorine in drinking water in my country is 1 mg / L, and the discharge standard for fluorine in industrial wastewater is 10 mg / L; while arsenic is a highly toxic and carcinogenic substance, and it is present in water as oxygen-containing ions (AsO 4 3- ) form, arsenic, as a toxic and harmful substance, is still the main toxic pollutant in my country. The eutrophication of freshwater lakes is a hot issue in the world, and phosphate ion (PO 4 3- ) is the main cause of eutrophication, such as the pollution of Dianchi Lake in Kunming is mainly due to eutrophication. [0003] Adsorption method is considered to be able to remove fluorine, phosphorus and arsenic (F, PO, 4 3- , AsO 4 3- ) effective method. Commonly used adsorpt...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30
Inventor 石碧廖学品顾迎春
Owner SICHUAN UNIV
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