Organic inorganic composite hydrogel capable of removing heavy metal from water body
An inorganic composite, hydrogel technology, applied in the directions of alkali metal compounds, inorganic chemistry, water/sewage treatment, etc., can solve the problems of low selectivity, low regeneration efficiency, high price of activated carbon, etc., and achieve strong heavy metal ion adsorption performance. Effect
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[0020] Example 1
[0021] a. Clay purification: mechanically pulverize and sieve the attapulgite, take a mineral sample with a particle size of 20 meshes and add distilled water to make pulp, purify by a combination of wet natural sedimentation and high-speed centrifugation, and use a freeze-thaw method to lamella dissociate;
[0022] b. Clay activation: mechanically pulverize and sieve the attapulgite treated in step a, take a ore sample with a particle size of 20 meshes, add 25% hydrochloric acid for activation, leave it at room temperature overnight, and filter it with a Buchner funnel , washed with water until neutral, baked in an oven at 105 °C for 1 h, and then roasted in a tube furnace at 400 °C for 2 h before use;
[0023] c, mechanically pulverizing and sieving the treated clay in step b, and taking a 200-purpose ore sample with a particle size for subsequent use;
[0024] d. Preparation of adsorbent: take 3.00 g of acrylic acid in a 250 mL beaker, add 45 mL of deio...
Example Embodiment
[0032] Example 2
[0033] a. Clay purification: mechanically pulverize and sieve the attapulgite, take a mineral sample with a particle size of 80 meshes and add distilled water to make pulp, use a combination of wet natural sedimentation and high-speed centrifugation to purify, and use a freeze-thaw method to lamella dissociate;
[0034] b. Clay activation: mechanically pulverize and sieve the attapulgite treated in step a, take a ore sample with a particle size of 80 mesh, add 1% hydrochloric acid for activation, leave it at room temperature overnight, and filter it with a Buchner funnel , washed with water until neutral, baked in an oven at 105°C for 1.5h, and then roasted in a tube furnace at 400°C for 2h before use;
[0035] c, mechanically pulverizing and sieving the treated clay in step b, and taking a 200-purpose ore sample with a particle size for subsequent use;
[0036] d. Preparation of adsorbent: take 4.00g of acrylamide in a 250mL beaker, add 45mL of deionized ...
Example Embodiment
[0044] Example 3
[0045] a. Clay purification: mechanically pulverize and sieve the bentonite, take a mineral sample with a particle size of 40 meshes and add distilled water to make pulp, and purify by a combination of wet natural sedimentation and high-speed centrifugation, and use a freeze-thaw method for lamellar thawing. Leave;
[0046] b. Clay activation: mechanically pulverize and sieve the bentonite treated in step a, take a ore sample with a particle size of 40 meshes, add 20% hydrochloric acid for activation, leave it at room temperature overnight, and filter it with a Buchner funnel. Wash with water until neutral, bake in an oven at 105°C for 1 hour, and then roast in a tube furnace at 400°C for 2 hours before use;
[0047] c, mechanically pulverizing and sieving the treated clay in step b, and taking a 200-purpose ore sample with a particle size for subsequent use;
[0048] d. Preparation of adsorbent: take 3.20g of methacrylic acid in a 250mL beaker, add 45mL o...
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