Preparation method of cellulose adsorbent
A cellulose and adsorbent technology, which is applied in the field of preparation of cellulose adsorbents, can solve the problems of incapable metal ion adsorption operation process, high toxicity of reaction reagents, complicated operation process, etc., and achieves less process equipment, low price, and synthesis steps. simple effect
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Embodiment 1
[0016] (1) Weigh 3 g of bagasse pulp cellulose into a 250 mL four-necked bottle, add 100 g of 30% sodium hydroxide solution, stir for 60 min, filter, wash with water until neutral, and press dry to obtain alkalized cellulose.
[0017] (2) Measure 5 mL of acrylic acid, neutralize with 8.64 mL of 6 mol / L NaOH solution and cool to room temperature. Weigh 3.15g of acrylamide and 0.76g of methacryloxyethyltrimethylammonium chloride, dissolve them in 20mL of distilled water, add acrylic acid neutralizing solution, and mix well. Add the alkalized cellulose to the mixture and stir well. The temperature of the water bath was raised to 70°C. Weigh 0.171g of ammonium persulfate and 0.079g of sodium bisulfite, and dissolve in a small amount of water to make the initiator concentration 4%. After the temperature of the system rose to 70°C, the initiator was added and reacted for 2 hours.
[0018] (3) After the product is washed with dilute alkaline solution, it is washed with water until...
Embodiment 2
[0020] (1) Weigh 4.09 g of bagasse pulp cellulose into a 250 mL four-neck bottle, add 100 g of 30% sodium hydroxide solution, stir for 90 min, filter and wash with water until neutral to obtain alkalized cellulose.
[0021] (2) Measure 5.38 mL of acrylic acid, neutralize it with 7.85 mL of 6 mol / L NaOH solution and cool to room temperature. Weigh 3.15g of acrylamide and 0.76g of methacryloyloxyethyltrimethylammonium chloride, stir with 20mL of distilled water to dissolve them. Then add acrylic acid neutralizer and mix well. Add the alkalized cellulose to the mixture and stir well. The water bath was warmed to 60 °C. Weigh 0.171g of ammonium persulfate and 0.079g of sodium bisulfite, and dissolve in a small amount of water to make the initiator concentration 4.8%. After the temperature of the system rose to 60°C, the initiator was added and reacted for 3 hours.
[0022] (3) After the product is washed with dilute alkaline solution, it is washed with water until neutral, and...
Embodiment 3
[0024] (1) Weigh 2.39g of bagasse pulp cellulose into a 250mL four-neck bottle, add 100g of 40% sodium hydroxide solution, stir for 60min, filter and wash with water until neutral to obtain alkalized cellulose.
[0025] (2) Measure 5.38mL of acrylic acid, neutralize with 10.54mL of 6mol / L NaOH solution and cool to room temperature. Weigh 3.15g of acrylamide and 0.76g of methacryloyloxyethyltrimethylammonium chloride, stir with 20mL of distilled water to dissolve them. Then add acrylic acid neutralizer and mix well. Add the alkalized cellulose to the mixture and stir well. The water bath was warmed to 60 °C. Weigh 0.171g of ammonium persulfate and 0.079g of sodium bisulfite, and dissolve in a small amount of water to make the initiator concentration 4.8%. After the temperature of the system rose to 60°C, the initiator was added dropwise and reacted for 2 hours.
[0026] (3) After the product is washed with dilute alkaline solution, it is washed with water until neutral, and...
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