Preparation method for silver-enriched straw material
A technology of enrichment and straw, which is applied in the field of preparation of silver-enriched straw materials, can solve the problems of difficult regeneration of adsorbent, expensive adsorption raw materials, cumbersome and difficult treatment, etc.
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Embodiment 1
[0016] Harvest the wheat straw, wash it with tap water, dry it, put the cleaned wheat straw in a pulverizer, and pulverize it into particles with a particle size of 20 to 100 mesh;
[0017] Dissolve succinic anhydride and acetic acid in deionized water, the mass concentration of succinic anhydride is 8%, and the mass concentration of acetic acid is 10%, to obtain a mixed aqueous solution of succinic anhydride / acetic acid.
[0018] Place 5 g of crushed wheat straw in 20 mL of a mixed aqueous solution of succinic anhydride / acetic acid, heat to 60°C, stir for 4 hours, cool, filter, wash with deionized water, and dry to obtain succinic anhydride-modified wheat straw .
[0019] The succinic anhydride-modified wheat straw was placed in 0.2% ascorbic acid aqueous solution for 2 hours, taken out, filtered, placed in a drying oven, and dried at 60°C for 4 hours to obtain ascorbic acid-treated wheat straw.
[0020] The ascorbic acid-treated wheat straw was placed in 0.2% thiourea aqueo...
Embodiment 2
[0023] Harvest the wheat straw, wash it with tap water, dry it, put the cleaned wheat straw in a pulverizer, and pulverize it into particles with a particle size of 20 to 100 mesh;
[0024] Dissolve succinic anhydride and acetic acid in deionized water, the mass concentration of succinic anhydride is 8%, and the mass concentration of acetic acid is 10%, to obtain a mixed aqueous solution of succinic anhydride / acetic acid.
[0025] Place 5 g of crushed wheat straw in 50 mL of a mixed aqueous solution of succinic anhydride / acetic acid, heat to 80°C, stir for 6 hours, cool, filter, wash with deionized water, and dry to obtain succinic anhydride-modified wheat straw .
[0026] The succinic anhydride-modified wheat straw was placed in a 1% ascorbic acid aqueous solution for 6 hours, taken out, filtered, placed in a drying oven, and dried at 60°C for 4 hours to obtain ascorbic acid-treated wheat straw.
[0027] The ascorbic acid-treated wheat straw was placed in 0.5% thiourea aqueo...
Embodiment 3
[0030] Harvest the wheat straw, wash it with tap water, dry it, put the cleaned wheat straw in a pulverizer, and pulverize it into particles with a particle size of 20 to 100 mesh;
[0031] Dissolve succinic anhydride and acetic acid in deionized water, the mass concentration of succinic anhydride is 8%, and the mass concentration of acetic acid is 10%, to obtain a mixed aqueous solution of succinic anhydride / acetic acid.
[0032] Place 5 g of crushed wheat straw in 30 mL of a mixed aqueous solution of succinic anhydride / acetic acid, heat to 60°C, stir for 6 hours, cool, filter, wash with deionized water, and dry to obtain succinic anhydride-modified wheat straw .
[0033] The succinic anhydride-modified wheat straw was placed in 0.5% ascorbic acid aqueous solution for 5 hours, taken out, filtered, placed in a drying oven, and dried at 60°C for 4 hours to obtain ascorbic acid-treated wheat straw.
[0034] The ascorbic acid-treated wheat straw was placed in 0.5% thiourea aqueo...
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