Preparation method for metal ion enrichment agent based on konjac glucomannan
A technology of konjac glucomannan and metal ions, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve problems such as difficult recovery, cumbersome preparation process, and limited single-time adsorption capacity
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Embodiment 1
[0025] The method of the present embodiment comprises the following steps:
[0026] Step 1, adding konjac fine powder into 50°C water and stirring to make it fully swell to obtain a 1% konjac fine powder solution by mass percentage;
[0027] Step 2: Add 25 mL of cyclohexane and 75 mL of liquid paraffin to the konjac fine powder solution obtained in 200 mL of step 1 and add 2 mL of Span 80 successively, and stir evenly to obtain the first mixed solution;
[0028] Step 3: Add 0.06g of ammonium persulfate to the first mixed solution obtained in step 2 and mix well, then add 7g of acrylic acid neutralized with sodium hydroxide and 0.01g of N-N methylenebisacrylamide, at a speed Stir under the condition of 1000r / min and raise the temperature to 85°C for the first graft polymerization reaction for 2h, stop stirring and cool to room temperature to obtain the first polymerization reaction solution, put the first polymerization reaction solution to stand and separate and take out the u...
Embodiment 2
[0037] The method of the present embodiment comprises the following steps:
[0038] Step 1, adding konjac fine powder into water at 45°C and stirring to make it fully swell to obtain a 1.5% konjac fine powder solution by mass percent;
[0039] Step 2: Add 50 mL of cyclohexane and 50 mL of liquid paraffin to the konjac fine powder solution obtained in 200 mL of step 1 and add 4 mL of Span 80 successively, and stir evenly to obtain the first mixed solution;
[0040] Step 3: Add 0.10 g of ammonium persulfate to the first mixed solution obtained in step 2 and mix well, then add 7.5 g of acrylic acid neutralized with sodium hydroxide and 0.02 g of N-N methylenebisacrylamide, in Stir at a speed of 1500r / min and raise the temperature to 60°C for the first graft polymerization reaction for 1.5h, stop stirring and cool to room temperature to obtain the first polymerization reaction liquid, after the first polymerization reaction liquid is left to stand and layered Take out the superna...
Embodiment 4
[0061] The method of the present embodiment comprises the following steps:
[0062] Step 1, adding konjac fine powder into 50°C water and stirring to make it fully swell to obtain a 2% konjac fine powder solution by mass percent;
[0063] Step 2: Add 75mL of cyclohexane and 25mL of liquid paraffin to the konjac powder solution obtained in 200mL of step 1, and add 3.3mL of Span 80 to the mixed oil phase, and stir evenly to obtain the first mixed solution;
[0064] Step 3: Add 0.18g of ammonium persulfate to the first mixed solution obtained in step 2 and mix well, then add 10g of acrylic acid neutralized with sodium hydroxide and 0.03g of N-N methylenebisacrylamide, at a speed Stir under the condition of 3000r / min and raise the temperature to 75°C for the first graft polymerization reaction for 3h, stop stirring and cool to room temperature to obtain the first polymerization reaction solution, put the first polymerization reaction solution to stand and separate and take out the...
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Abstract
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