Method for preparing magnetic adsorption material from animal and plant wastes
A magnetic adsorption material, animal and plant technology, applied in the direction of chemical instruments and methods, adsorption water/sewage treatment, alkali metal compounds, etc., can solve the problems such as the need to improve the adsorption efficiency, the high cost of raw material procurement, and the increase in treatment cost, and achieve excellent results Biodegradability, high retention rate of internal structure, and reproducible strength
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Embodiment 1
[0026] Step 1. The bagasse is sheared and pulped (the ratio of bagasse to water is 1:10), and 100 parts by weight of the crude fiber slurry obtained by filtering is added to 100 parts by weight of 64% sulfuric acid aqueous solution, and processed by mechanical stirring for 2 hours. Cellulose nanocrystals were obtained by centrifugal washing and separation.
[0027] Step 2. 20 parts by weight of cellulose nanocrystals are dispersed in 100 parts by weight, 4 parts by weight of surfactants and 2 parts by weight of pore-forming agents and 5 parts by weight of calcium acetate, mechanically stirred for 2 hours, and added 5 parts by weight of concentration of 10% sodium phosphate aqueous solution, mechanical stirring, centrifugal washing, separation and drying to obtain a hydroxyapatite fiber composite material, and continuous heat treatment for 3 hours in an oxygen atmosphere of 180 ° C, and collecting powder to obtain hollow hydroxyapatite.
[0028] Step 3. Disperse 40 parts by wei...
Embodiment 2
[0031] Step 1. The bagasse is sheared and pulped (the ratio of bagasse to water is 1:10), and 200 parts by weight of the crude fiber slurry obtained by filtering is added to 100 parts by weight of 64% sulfuric acid aqueous solution, and processed by mechanical stirring for 4 hours. Cellulose nanocrystals were obtained by centrifugal washing and separation.
[0032] Step 2. 40 parts by weight of cellulose nanocrystals are dispersed in 100 parts by weight, 6 parts by weight of surfactants and 4 parts by weight of pore-forming agents and 10 parts by weight of calcium acetate, mechanically stirred for 6 hours, and added 10 parts by weight of concentration of 10% sodium phosphate aqueous solution, mechanical stirring, centrifugal washing, separation and drying to obtain a hydroxyapatite fiber composite material, in an oxygen atmosphere of 200 ° C, continuous heat treatment for 5 hours, collecting powder to obtain hollow hydroxyapatite.
[0033] Step 3. Disperse 60 parts by weight o...
Embodiment 3
[0036] Step 1. The bagasse is sheared and pulped (the ratio of bagasse to water is 1:10), and 100 parts by weight of the crude fiber slurry obtained by filtering is added to 100 parts by weight of 64% sulfuric acid aqueous solution, and processed by mechanical stirring for 4 hours. Cellulose nanocrystals were obtained by centrifugal washing and separation.
[0037]Step 2. 20 parts by weight of cellulose nanocrystals are dispersed in 100 parts by weight, 6 parts by weight of surfactants and 2 parts by weight of pore-forming agents and 5 parts by weight of calcium acetate, mechanically stirred for 2 hours, and add 10 parts by weight of concentration of 10% sodium phosphate aqueous solution, mechanical stirring, centrifugal washing, separation and drying to obtain a hydroxyapatite fiber composite material, in an oxygen atmosphere of 190 ° C, continuous heat treatment for 4 hours, collecting powder to obtain hollow hydroxyapatite.
[0038] Step 3. Disperse 40 parts by weight of ho...
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