Efficient electric promoting absorptive fluorine removal adsorbent and preparation method thereof
An adsorbent and high-efficiency technology, used in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve problems to be improved, limited adsorption effect, etc., to promote adsorption effect, reduce dosage, and promote adsorption. Effect
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Embodiment 1
[0033] Example 1 Preparation of Composite Electrodefluorination Adsorbent
[0034]1) The hydrated zirconium oxyhydroxide, conductive carbon black and dispersing agent are mixed evenly according to the mass percentage of 83:13:4 to prepare a conductive mixture. The dispersing agent is a mixed solution of absolute ethanol and montmorillonite (the ratio is 4:1mL / g);
[0035] 2) Mix the conductive mixture and the binder evenly, and place it in a molding mold to make a material of the desired shape;
[0036] 3) The above materials are dried in an oven to obtain a composite adsorbent for electrocatalyzed defluorination.
[0037] Using conductive carbon black as the electrode material and applying a DC voltage of 5V, the raw water containing fluorine ion concentration of 10mg / L was electroadsorbed without adding metal oxides. It was found that the treatment effect was very poor, and the fluoride ion could not be removed When the concentration is reduced to 1mg / L, if other conditio...
Embodiment 2
[0040] Example 2 Preparation of Composite Electrodefluorination Adsorbent
[0041] 1) The hydrated zirconium oxyhydroxide, conductive carbon black and dispersant are mixed evenly in a mass percentage of 70:26:4 to prepare a conductive mixture. The dispersant is a mixed solution of absolute ethanol and montmorillonite (the ratio is 4:1mL / g);
[0042] 2) Mix the conductive mixture and the binder evenly, place the material in the molding mold to produce the desired shape, and the binder is the esterification product of polyvinyl alcohol and carboxylic acid;
[0043] 3) The above materials are dried in an oven to obtain a composite adsorbent for electrocatalyzed defluorination.
[0044] The electro-adsorption fluorine removal test with conductive carbon black as the electrode material is the same as in Example 1.
[0045] When the fluoride ion concentration in the raw water is 10mg / L, the SV is 5h -1 , when the particle filling mass is 20g, the fluoride ion concentration in th...
Embodiment 3
[0047] Example 3 Preparation of Composite Electrodefluorination Adsorbent
[0048] 1) The activated alumina powder, the conductive carbon black and the dispersant are uniformly mixed in a mass percentage of 80:17:3 to obtain a conductive mixture, and the dispersant is 12% sodium hexametaphosphate solution.
[0049] 2) Mix the conductive mixture and the binder evenly, place the material in the molding mold to produce the desired shape, and the binder is the esterification product of polyvinyl alcohol and carboxylic acid;
[0050] 3) The above materials are dried in an oven to obtain a composite adsorbent for electrocatalyzed defluorination.
[0051] The electro-adsorption fluorine removal test with conductive carbon black as the electrode material is the same as in Example 1.
[0052] When the fluoride ion concentration in the raw water is 10mg / L, the SV is 5h -1 , when the particle filling mass is 20g, the fluoride ion concentration in the effluent reaches 1mg / L as the end p...
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