Preparation method of chromium ion removing adsorbent
A technology of adsorbent and chromium ion, which is applied in the field of preparation of adsorbent for removing chromium ion, and achieves the effects of wide distribution, expanded application value, and large specific surface area
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Embodiment 1
[0031] A preparation method for removing chromium ion adsorbent, the specific operation steps are as follows:
[0032] (1) Crush 100 kg of banana stems with a water content of 12% to 40 meshes, add 3 mol / L sodium hydroxide solution and soak for 5 hours, then wash the banana stem powder with water until neutral to obtain banana stem powder cellulose; Add 8kg of maleic acid to the stem powder cellulose, then add 100kg of water, mix evenly, and dry at 80°C for 2 hours to obtain modified banana stem powder;
[0033] (2) Take 60kg of water hyacinth powder and 10kg of thiourea and add them to an ultrasonic mixer, then add 120kg of water, react at an ultrasonic frequency of 40kHz for 60min, place the reacted paste in an oven at 60°C and heat and dry for 3h to obtain modified water hyacinth powder;
[0034] (3) Add the above-mentioned modified banana stalk powder residue and modified water hyacinth powder to the mixer, add 5 kg of ammonium cerium nitrate solution and 8 kg of chitosan...
Embodiment 2
[0036] A preparation method for removing chromium ion adsorbent, the specific operation steps are as follows:
[0037] (1) Crush 100 kg of banana stems with a water content of 12% to 40 meshes, add 5 mol / L sodium hydroxide solution to soak for 4 hours, then wash the banana stem powder with water until neutral to obtain banana stem powder cellulose; Add 5kg of maleic acid to the stem powder cellulose, then add 80kg of water, mix evenly, and dry at a temperature of 100°C for 1 hour to obtain modified banana stem powder;
[0038] (2) Take 65kg of water hyacinth powder and 12kg of thiourea, add them to an ultrasonic mixer, then add 150kg of water, react at an ultrasonic frequency of 60kHz for 30min, place the reacted paste in an oven at 80°C and heat and dry for 2h to obtain modified water hyacinth powder;
[0039] (3) Add the above-mentioned modified banana stalk powder residue and modified water hyacinth powder to the mixer, add 6 kg of ammonium cerium nitrate solution and 5 kg...
Embodiment 3
[0041] A preparation method for removing chromium ion adsorbent, the specific operation steps are as follows:
[0042] (1) Crush 100 kg of banana stems with a water content of 12% to 60 mesh, add 5 mol / L sodium hydroxide solution to soak for 6 hours, and then wash the banana stem powder with water until neutral to obtain banana stem powder cellulose; Add 10kg of maleic acid to the stem powder cellulose, then add 100kg of water, mix evenly, and dry at a temperature of 90°C for 1.5h to obtain modified banana stem powder;
[0043] (2) Take 70kg of water hyacinth powder and 12kg of thiourea and add them to an ultrasonic stirrer, then add 150kg of water, and react for 45min at an ultrasonic frequency of 50kHz, place the reacted paste in an oven at 70°C for 2.5h, and heat and dry it for 2.5h. water hyacinth powder;
[0044](3) Add the above-mentioned modified banana stalk powder residue and modified water hyacinth powder to the mixer, add 8 kg of ammonium cerium nitrate solution an...
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