Heavy metal ion adsorption type hybrid hollow fiber film and production method thereof
A heavy metal ion, adsorption-type technology, applied in the direction of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problems of low cleaning efficiency, retention of modification methods, and insufficient membrane reuse and other problems, to achieve the effects of pure water flux and hydrophilicity improvement, high packing density, and easy industrial implementation
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Embodiment 1
[0039] (1) Purification of attapulgite. Weigh 10g of attapulgite with a particle size of 300 mesh, wash it with 1L of distilled water, take its supernatant after precipitation, centrifuge at a speed of 500rpm for 1min, take its supernatant, add a small amount of distilled water to the supernatant and mix evenly Continue to centrifuge at 500rpm for 1min, then take the supernatant, wash the supernatant 3 times repeatedly, and finally use 4000rpm for centrifugation, take the precipitate, vacuum dry at 90°C for 24h, and select the corresponding mesh according to the particle size after grinding Sieve through a sieve to obtain purified attapulgite.
[0040] (2) Preparation of primary ATP-PAMAM. Add 10g of purified attapulgite, 15mL of APES and 80mL of toluene into a 250mL three-neck flask, ultrasonically disperse for 30min, and react at 50°C for 5h. The extractor was sequentially extracted with toluene and 90% ethanol under reflux for 8 hours, and then vacuum-dried at 60° C. for ...
Embodiment 2
[0051] (1) Purification of attapulgite. With embodiment 1.
[0052] (2) Preparation of primary ATP-PAMAM. Add 15g of purified attapulgite, 25mL of APES and 120mL of toluene into a 250mL three-necked flask, ultrasonically disperse for 30min, and react at 75°C for 8h. The extractor was sequentially extracted with toluene and 95% ethanol under reflux for 12 hours, and then vacuum-dried at 60° C. for 24 hours to obtain the primary PAMAM-modified attapulgite.
[0053] (3) Preparation of 0.5 generation ATP-PAMAM. Add 10g of primary PAMAM modified attapulgite, 15mL of MA and 120mL of methanol into a 250mL three-necked flask, and react at 60°C for 25h under the protection of nitrogen. The extractor was extracted with tetrahydrofuran for 25 hours, and then vacuum-dried at 60°C for 24 hours to obtain the 0.5th generation PAMAM modified attapulgite.
[0054](4) Preparation of 1.0 generation ATP-PAMAM. Put 10g of 0.5 generation PAMAM modified attapulgite, 75mL of EDA and 120mL of met...
Embodiment 3
[0063] (1) Purification of attapulgite. With embodiment 1.
[0064] (2) Preparation of primary ATP-PAMAM. Add 12g of purified attapulgite, 20mL of APES and 100mL of toluene into a 250mL three-necked flask, ultrasonically disperse for 30min, and react at 55°C for 7h. The extractor was sequentially refluxed with toluene and 92% ethanol for 10 h, and then vacuum-dried at 60° C. for 24 h to obtain the primary PAMAM-modified attapulgite.
[0065] (3) Preparation of 0.5 generation ATP-PAMAM. Add 8g of primary PAMAM modified attapulgite, 10mL of MA and 100mL of methanol into a 250mL three-necked flask, and react at 55°C for 20h under nitrogen protection. The extractor was extracted with tetrahydrofuran for 20 hours, and then vacuum-dried at 60°C for 24 hours to obtain the 0.5th generation PAMAM modified attapulgite.
[0066] (4) Preparation of 1.0 generation ATP-PAMAM. Put 7g of 0.5 generation PAMAM modified attapulgite, 70mL of EDA and 110mL of methanol in a 250mL three-necked ...
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