Resin-based nano composite material, preparation method and method for deeply removing copper- citric acid from water
A technology of nanocomposite materials and composite materials, applied in the field of wastewater treatment, to achieve the effects of large specific surface area, high adsorption capacity, and strong adsorption selectivity
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Embodiment 1
[0055] The resin-based nanocomposite material of this embodiment is synthesized according to the following steps:
[0056] 1) Dissolve 10 g of zirconium oxychloride in an acidic aqueous solution with pH=1.5; make zirconium exist in ion form.
[0057] 2) Take tertiary aminated styrene-divinylbenzene copolymer spheres, add them to the solution system prepared in step 1), the mass ratio of the copolymer spheres to zirconium oxychloride is 1:1, and then heat it in a water bath to 70 ℃, open; keep stirring for 12 hours under the condition of 300rpm;
[0058] Regulating the mass ratio of copolymerized spheres and zirconium oxychloride is to control the loading capacity of nano-hydration zirconia, and the purpose of exposure and heating is to promote the hydrolysis and concentration of zirconium salt;
[0059] 3) After step 2) is completed, the copolymerized spheres are taken out, air-dried naturally, and then transferred to a NaOH solution with a mass concentration of 10%. The mass...
Embodiment 2
[0069] The water body depth of present embodiment 2 removes the method for Cu-citric acid complex, comprises the following steps:
[0070] (a) Prepare simulated waste water containing Cu-citric acid complex, the initial concentration of copper is 2.5mg / L, the molar concentration of citric acid is 5 times of the molar concentration of copper, after filtering, the pH of the raw water is adjusted to 6.0;
[0071] (b) Simulate the adsorption tower device, the tower is filled with 5mL (wet volume) resin-based nanocomposite material, and the wastewater containing Cu-citric acid complex is passed through the adsorption tower at a temperature of 10°C with a flow rate of 10BV / h. The resin-based nanocomposite material used in this step (b), its matrix macroporous D301 weakly basic ion exchange resin, particle size distribution between 0.6 ~ 0.9mm, pore size distribution between 1 ~ 80nm, rich in Nano-pore structure and tertiary amine groups, nano-hydrated zirconia particles in the resin...
Embodiment 3
[0075] The water body depth of present embodiment 3 removes the method for Cu-citric acid complex, comprises the following steps:
[0076] (a) Prepare simulated waste water containing Cu-citric acid complex, the initial concentration of copper is 5.0mg / L, the molar concentration of citric acid is 10 times of the molar concentration of copper, after filtering, the pH of the raw water is adjusted to 6.0;
[0077] (b) Simulate the adsorption tower device, the tower is filled with 5mL (wet volume) resin-based nanocomposite material, and the wastewater containing Cu-citric acid complex is passed through the adsorption tower at a temperature of 30°C with a flow rate of 1BV / h. The resin-based nanocomposite material used in this step (b), its matrix macroporous D301 weakly basic ion exchange resin, particle size distribution between 0.6 ~ 0.9mm, pore size distribution between 1 ~ 80nm, rich in Nano-pore structure and tertiary amine groups, nano-hydrated zirconia particles in the resin...
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