A preparation method of fly ash/cobalt ferrite magnetic composite adsorption material
A technology of composite adsorbent material and fly ash, which is applied in chemical instruments and methods, adsorbed water/sewage treatment, silicon compound and other directions, can solve the problems of difficulty in separating adsorbent materials, etc., and achieves simple method process, light degree of agglomeration, and particle size distribution. narrow effect
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Embodiment 1
[0027] Embodiment 1, fly ash / CoFe 2 o 4 Preparation of Magnetic Composite Adsorbent Material and Its Adsorption to Malachite Green
[0028] The fly ash was added to deionized water to wash, filtered, and dried in an oven at 105°C for 24 hours; 1.310g of Co(NO 3 ) 2 ·6H 2 O and 3.636g of Fe(NO 3 ) 3 9H 2 O was added to 30ml deionized water, then 3g of pretreated fly ash was added, and the pH of the mixture solution was adjusted to about 11 with ammonia water, and after stirring for 0.5h, the mixture solution was transferred to a 50ml polytetrafluoroethylene autoclave, and placed Heating in an oven at 180°C for 18h at constant temperature, taking it out and filtering the resulting mixture, washing the solid powder with deionized water and ethanol to neutral washing, drying at 105°C for 2h, putting the obtained solid in a muffle furnace at 650°C for calcination for 2h , that is, the modified fly ash / CoFe 2 o 4 Composite absorbent material.
[0029] Such as figure 1 As ...
Embodiment 2
[0034] Embodiment 2 fly ash / CoFe 2 o 4 Preparation of Magnetic Composite Adsorbent Material
[0035] The fly ash was added to deionized water to wash, filtered, and dried in an oven at 105°C for 24 hours; 1.310g of Co(NO 3 ) 2 ·6H 2 O and 3.636g of Fe(NO 3 ) 3 9H 2 O was added to 30ml deionized water, then 1g of pretreated fly ash was added, and the pH of the mixture solution was adjusted to about 9 with ammonia water, and after stirring for 0.5h, the mixture solution was transferred to a 50ml polytetrafluoroethylene autoclave, and placed Heating at a constant temperature in an oven at 160°C for 24h, taking it out and filtering the resulting mixture, washing the solid powder with deionized water and ethanol to neutral washing, drying at 105°C for 2h, putting the obtained solid in a muffle furnace at 600°C for calcination for 2h , that is, the modified fly ash / CoFe 2 o 4 Composite absorbent material.
Embodiment 3
[0036] Embodiment 3 fly ash / CoFe 2 o 4 Preparation of Magnetic Composite Adsorbent Material
[0037] The fly ash was added to deionized water to wash, filtered, and dried in an oven at 105°C for 24 hours; 1.310g of Co(NO 3 ) 2 ·6H 2 O and 3.636g of Fe(NO 3 ) 3 9H 2 O was added to 30ml deionized water, then 5g of pretreated fly ash was added, and the pH of the mixture solution was adjusted to about 11 with ammonia water, and after stirring for 0.5h, the mixture solution was transferred to a 50ml polytetrafluoroethylene autoclave, and placed Heating at a constant temperature in an oven at 220°C for 16h, taking it out and filtering the resulting mixture, washing the solid powder with deionized water and ethanol to neutral washing, drying at 105°C for 2h, and calcining the obtained solid in a muffle furnace at 650°C for 2h , that is, the modified fly ash / CoFe 2 o 4 Composite absorbent material.
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