Method for large-scale continuous preparation of nanometer zero-valent metal materials

[0034] Example 1

[0035] Weigh the garlic waste, crush it, sieving through 40 mesh, throw it into water, stir and soak for 24 hours; collect the garlic waste particles floating on the water, add a mixed solution of magnesium hydroxide and sodium hydroxide to adjust its pH The value is 13, keep stirring for 12 hours, and collect the particles;

[0036] Prepare 50 liters of 0.01M ferric chloride ion solution, with an initial pH of 2.5, put into the previous step to prepare 2,000 grams of garlic waste particles (adsorbent) (dry basis measurement), stir and react for 30 minutes, filter the adsorbent, and use After washing 3 times with distilled water, add 100 liters of water to make a uniform slurry;

[0037] Prepare 100 liters of 0.1M sodium borohydride solution, and the above garlic waste particle slurry that adsorbs and loads iron ions are pumped into the auger reactor with a total reaction space of 500 liters with an infusion pump, so that the two are in The mixing, contacting and re

[0038] Example 2

[0039] Weigh the garlic waste, crush it, sieving through 80 meshes, throw it into water, stir and soak for 12 hours; collect the garlic waste particles floating on the water, add a mixed solution of calcium hydroxide and sodium hydroxide to adjust its pH The value is 11, after keeping stirring for 24 hours, collect the particles;

[0040] Prepare 100 liters of ferric chloride ion solution with a concentration of 0.02M, the initial pH is 2.5, put into the previous step to prepare garlic waste particles (adsorbent) 10 kg (dry basis measurement), stir the reaction for 30 minutes, filter the adsorbent, After washing 3 times with distilled water, add 500 liters of water to make a uniform slurry;

[0041] Prepare 500 liters of 0.2M sodium borohydride solution, and use the infusion pump to pump into the auger reactor with a total reaction space of 500 liters. The mixing, contacting and reducing reactions in the compartmental isolation space control the rotation speed of th

[0042] Example 3

[0043] Weigh the garlic waste, crush it, sieving through 80 meshes, throw it into water, stir and soak for 12 hours; collect the garlic waste particles floating on the water, add a mixed solution of calcium hydroxide and sodium hydroxide to adjust its pH The value is 11, after keeping stirring for 24 hours, collect the particles;

[0044] Prepare 200 liters of 0.05M nickel chloride ion solution, the initial pH is 6.5, put into the previous step to prepare garlic waste particles (adsorbent) 10 kg (dry basis measurement), stir the reaction for 30 minutes, filter the adsorbent, After washing 3 times with distilled water, add 100 liters of water to make a uniform slurry;

[0045] Prepare 100 liters of sodium borohydride solution with a concentration of 0.05M, and the above garlic waste particle slurry that adsorbs and load iron ions are pumped into the auger reactor with a total reaction space of 500 liters with an infusion pump, so that the two are in The mixing, conta