A kind of preparation method of sodium alginate/acrylamide/graphene oxide gel ball
A technology of acrylamide and sodium alginate, applied in chemical instruments and methods, water/sludge/sewage treatment, alkali metal oxides/hydroxides, etc., can solve the problems of low adsorption efficiency and non-biodegradable adsorbents , to achieve good hydrophilicity and dispersibility, enhanced mechanical properties, and good adsorption properties
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Embodiment example 1
[0013] Accurately weigh 3.5 g of sodium alginate and 0.5 g of acrylamide, add them into a beaker containing 200 mL of deionized water, stir evenly at a temperature of 40 ° C, and use a peristaltic pump (10 rpm) to drop the mixed solution into a mass fraction of 4 % CaCl 2 in the solution, cross-linked and aged for 8 hours, and washed three times with deionized water to obtain gel balls with a particle size of 2.5±0.2 mm.
[0014] Accurately weigh 2.5g of the above-mentioned gel balls and place them in 100mL crystal violet solutions of different concentrations (10-60mg / L), shake in a constant temperature oscillator at 25°C and 200rpm for 10h, take the upper clear layer to detect the concentration of crystal violet , the results showed that the removal rate of the gel balls for different concentrations of crystal violet was between 53.8 and 82.7%.
[0015] Accurately weigh 2.5g of the above-mentioned gel balls and place them in 100mL of crystal violet solution with a concentrat...
Embodiment example 2
[0017] Accurately weigh 3.5g of sodium alginate and 0.5g of acrylamide, add them to a beaker containing 150mL of deionized water, accurately weigh 0.08g of graphene oxide and place in 50mL of deionized water, ultrasonically disperse for 2 hours, and put the dispersed graphene oxide Add the solution to the solution containing sodium alginate and acrylamide, stir evenly at a temperature of 40°C, and use a peristaltic pump (10rpm) to drop the mixed solution into 4% CaCl by mass fraction 2 in the solution, cross-linked and aged for 8 hours, and washed three times with deionized water to obtain gel balls with a particle size of 2.5±0.2 mm.
[0018] Accurately weigh 2.5g of the above-mentioned gel balls and place them in 100mL crystal violet solutions of different concentrations (10-60mg / L), shake in a constant temperature oscillator at 25°C and 200rpm for 10h, and take the supernatant to detect the crystal violet concentration. Concentration, the results showed that the removal rat...
Embodiment example 3
[0021] Accurately weigh 2.5g of sodium alginate and 1.0g of acrylamide, add them into a beaker containing 150mL of deionized water, accurately weigh 0.10g of graphene oxide and place in 50mL of deionized water, ultrasonically disperse for 2 hours, and put the dispersed graphene oxide Add the solution to the solution containing sodium alginate and acrylamide, stir evenly at a temperature of 40°C, and use a peristaltic pump (10rpm) to drop the mixed solution into 4% CaCl by mass fraction 2 in the solution, cross-linked and aged for 8 hours, and washed three times with deionized water to obtain gel balls with a particle size of 2.5±0.2 mm.
[0022] Accurately weigh 2.5g of the above-mentioned gel balls and place them in 100mL crystal violet solutions of different concentrations (10-60mg / L), shake in a constant temperature oscillator at 25°C and 200rpm for 10h, and take the supernatant to detect the crystal violet concentration. Concentration, the results show that the removal rat...
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