Heavy metal ion absorbent and preparation method thereof
A technology of heavy metal ions and adsorbents, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as secondary pollution, achieve the same effect, realize resource utilization, and eliminate secondary pollution The effect of pollution problems
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Embodiment 1
[0012] A heavy metal ion adsorbent, mainly composed of 90 parts by mass of black water-based ink printing waste liquid extract, 10 parts of a mixture of pumice and sepiolite, the preparation method of which is: acid analysis of black water-based ink printing waste liquid The extract is made into a slurry with a certain solid content, and an appropriate alkaline substance is added to neutralize it to neutrality; pumice and sepiolite particles with a mass percentage of 11% are added to the sludge (based on the dry weight of the absolute dry sludge ) Stir evenly to adjust the specific gravity of the sludge; while stirring, heat the sludge to 75°C for dehydration to make the sludge form a block, hot press the block sludge until the water content is lower than 50%, then dry it, and discharge the water; The sludge is isolated from the air and heated to 500°C for 2 hours; the sludge is broken into granules after falling to a certain temperature, and the wetting agent solution with a m...
Embodiment 2
[0016] A heavy metal ion adsorbent, mainly composed of 80 parts by mass of black water-based ink printing waste liquid extract, 20 parts of pumice and sepiolite mixture, the preparation method is: acid analysis of black water-based ink printing waste liquid The extract is made into a slurry with a certain solid content, and an appropriate alkaline substance is added to neutralize it to neutrality; pumice and sepiolite particles with a mass percentage of 25% are added to the sludge (based on the dry weight of the absolute dry sludge) ) Stir evenly to adjust the specific gravity of the sludge; while stirring, heat the sludge to 75°C for dehydration to make the sludge form a block, hot press the block sludge until the water content is lower than 50%, then dry it, and discharge the water; The sludge is isolated from the air and heated to 520°C for 2 hours; the sludge is broken into granules after falling to a certain temperature, and the wetting agent solution with a mass concentra...
Embodiment 3
[0020] A heavy metal ion adsorbent, mainly composed of 85 parts by mass of black water-based ink printing waste liquid extract, 15 parts of pumice and sepiolite mixture, the preparation method is: acid analysis of black water-based ink printing waste liquid The extract is made into a slurry with a certain solid content, and an appropriate alkaline substance is added to neutralize it to neutrality; pumice and sepiolite particles with a mass percentage of 17.6% are added to the sludge (based on the dry weight of the absolute dry sludge ) Stir evenly to adjust the specific gravity of the sludge; while stirring, heat the sludge to 75°C for dehydration to make the sludge form a block, hot press the block sludge until the water content is lower than 50%, then dry it, and discharge the water; The sludge is isolated from the air and heated to 500°C for 2 hours; the sludge is broken into granules after falling to a certain temperature, and the wetting agent solution with a mass concentr...
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