Modified bean pulp adsorbent as well as preparation method and application thereof
A soybean meal and adsorbent technology, which is applied in the field of removing heavy metal copper in wastewater by using a modified soybean meal adsorbent, can solve the problems of complex preparation process of activated carbon, limited popularization and application, high regeneration cost, etc., and achieves resource utilization and adsorption. The effect of large capacity and low cost
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Embodiment 1
[0021] Take a certain quality of dry soybean meal, crush it with a pulverizer, and screen out soybean meal powder with a particle size of 300-1200 μm. Soak the soybean meal powder and sodium hydroxide solution in a conical flask according to the ratio of soybean meal powder weight (g): sodium hydroxide solution volume (mL) 1:12.5, wherein the concentration of sodium hydroxide solution is 0.15mol / L, oscillate in a constant temperature water bath shaker at 20°C (120 rpm) for 12 to 24 hours, filter and separate, wash the filter residue with distilled water until the pH is neutral, and dry (dry or freeze-dry) to obtain the modified Soybean meal adsorbent.
Embodiment 2
[0034]Take a certain quality of dry soybean meal, crush it with a pulverizer, and screen out soybean meal powder with a particle size of 300-1200 μm. Soak the soybean meal powder and sodium hydroxide solution in a conical flask according to the ratio of soybean meal powder weight (g): sodium hydroxide solution volume (mL) 1:25, wherein the concentration of sodium hydroxide solution is 0.10mol / L, oscillate in a constant temperature water bath shaker at 20°C (120 rpm) for 12 to 24 hours, filter and separate, wash the filter residue with distilled water until the pH is neutral, and dry (dry or freeze-dry) to obtain the modified Soybean meal adsorbent.
[0035] Take modified soybean meal adsorbent 0.05, 0.10, 0.15, 0.20, 0.25, 0.30g and add 25mL, pH 5.0, 1000mg / L copper (Cu 2+ ) solution, vibrated (150 rpm) in a constant temperature water bath shaker at 20°C for 24 hours, filtered and separated, and determined the remaining copper (Cu 2+ )concentration.
[0036] Copper (Cu 2+...
Embodiment 3
[0038] Take a certain quality of dry soybean meal, crush it with a pulverizer, and screen out soybean meal powder with a particle size of 300-1200 μm. Soak the soybean meal powder and sodium hydroxide solution in a conical flask according to the ratio of soybean meal powder weight (g): sodium hydroxide solution volume (mL) 1:50, wherein the concentration of sodium hydroxide solution is 0.05mol / L, oscillate in a constant temperature water bath shaker at 20°C (120 rpm) for 12 to 24 hours, then filter and separate, wash the filter residue with distilled water until the pH is neutral, and dry (dry or freeze-dry) to obtain the modified yellow Soybean meal adsorbent.
[0039] Take 0.15 g of modified soybean meal adsorbent and add 25 mL, pH 5.0, copper (Cu 2+ ) concentrations are 100, 200, 300, 400, 500mg / L copper (Cu 2+ ) solution, vibrated (150 rpm) in a constant temperature water bath shaker at 20°C for 24 hours, filtered and separated, and determined the remaining copper (Cu ...
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Abstract
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