A kind of preparation method of arsenic removal material
A technology of raw materials and porous substrates, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of large difference in application range and effect, high economic and environmental costs, and achieve preparation time Short, easy polymerization rate, the effect of small amount of use
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Embodiment 1
[0026] Dissolve 45g of acrylic acid monomer in 49g of distilled water, cool to 15°C, add 35g of 50% sodium hydroxide solution dropwise under stirring to neutralize, and control the neutralization temperature to <30°C; Dissolve 2g of methacrylamide and 3g of glycerol in the solution, add 6.75g of pore-forming agent calcium hydroxide, stir and disperse for 30 minutes; cool the resulting suspension to 5°C, and add the initiator ammonium persulfate 0.5 g, continue to stir for 10 minutes, then transfer to a microwave heater, conduct a polymerization reaction at a medium fire for 90 seconds, and then conduct a polymerization reaction at a medium-high fire for 60 seconds to obtain a polymer; dry the polymer at T=180°C until the water content is less than 1% to obtain a block polymer 65.9g, crushed into small particles, sieve 51.3g of solid particles with a particle size of 300-800um, transfer to 45g of 10wt% hydrochloric acid solution, stir and acidify until the calcium ion content in...
Embodiment 2
[0028] Weigh 45g of acrylic acid and dissolve it in 58g of distilled water, cool to 15°C, add 40g of 50% sodium hydroxide solution dropwise under stirring to neutralize, control the neutralization temperature <30°C; weigh N,N-methylenebisacrylamide respectively Dissolve 1g and 1.5g of glycerol in the solution, add 9g of calcium hydroxide, stir and disperse for 30min; cool the resulting suspension to 5°C, add 0.5g of initiator ammonium persulfate under stirring, continue stirring for 10min, then transfer to Microwave heater, medium fire polymerization reaction for 90s to obtain the polymer; dry the polymer at T=180°C until the water content is less than 1% to obtain 67.1g of block polymer, which is crushed into small particles and sieved to obtain a particle size of 300-800um 48.7g of granules, transferred to 45g of 10wt% hydrochloric acid solution, stirred and acidified until the calcium ion content in the solution was constant; washed with distilled water for 1-2 times, and th...
Embodiment 3
[0030] Weigh 45g of acrylic acid and dissolve it in 58g of distilled water, cool to 15°C, add 40g of 50% sodium hydroxide solution dropwise under stirring to neutralize, control the neutralization temperature <30°C; weigh N,N-methylenebisacrylamide respectively Dissolve 3.6g and 4.5g of glycerol in the solution, add 9g of calcium hydroxide, stir and disperse fully for 30min; cool the resulting suspension to 5°C, add 0.5g of initiator ammonium persulfate under stirring, continue stirring for 10min, then turn to Put it into a microwave heater, and conduct a polymerization reaction at medium heat for 90s to obtain a polymer; dry the polymer at T=180°C until the water content is less than 1% to obtain 72.8g of block polymer, crush it into small particles, and sieve to take 300-800um particles 55.3g of particles with a diameter of 10wt% were transferred to 10wt% hydrochloric acid solution, stirred and acidified until the content of calcium ions in the solution was constant; after wa...
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