Multifunctional hydrogel for immobilizing SRB through microbiological method and preparation method thereof
A microbial method and hydrogel technology, applied in gel preparation, biological water/sewage treatment, chemical instruments and methods, etc., to achieve the effects of improving treatment efficiency, improving heavy metal content, and excellent ductility
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Embodiment 1
[0030] (1) Synthesis of self-healing, high mechanical strength acryloyl-containing hydrogels
[0031]Dissolve 3.2 g of glycinamide hydrochloride in 50 mL of N,N-dimethylformamide, and place in an ice bath to cool. Subsequently, 3.5 mL of acryloyl chloride was added dropwise to the solution, and the solution was stirred at room temperature for 4 hours. After stirring, add HCl solution for acidification, the pH after acidification is 2.0, and then wash with ether for 3-5 times. The pH was then adjusted to neutral by adding NaOH solution, and the solution was lyophilized overnight. The freeze-dried initial product was extracted with a methanol / ethanol mixed solution with a volume ratio of 1:2, and the extracted organic layer was concentrated in vacuo and cooled for recrystallization to obtain N-acryloylglycinamide.
[0032] Dissolve 5.6 g of L-alanine in 50 mL of N,N-dimethylformamide containing 1.5 mL of ethylenediamine, and place in an ice bath to cool. Afterwards, 3.1 mL of...
Embodiment 2
[0037] (1) Synthesis of self-healing, high mechanical strength acryloyl-containing hydrogels
[0038] Dissolve 4.3 g of glycinamide hydrochloride in 80 mL of N,N-dimethylformamide, and place in an ice bath to cool. Subsequently, 5.1 mL of acryloyl chloride was added dropwise to the solution, and the solution was stirred at room temperature for 3 hours. After stirring, add HCl solution for acidification, the pH after acidification is 3.0, and then wash with ether for 3-5 times. The pH was then adjusted to neutral by adding NaOH solution, and the solution was lyophilized overnight. The freeze-dried primary product was extracted with a methanol / ethanol mixed solution with a volume ratio of 1:1, and the extracted organic layer was concentrated in vacuo and cooled for recrystallization to obtain N-acryloylglycinamide.
[0039] Dissolve 2.8 g of L-alanine in 80 mL of N,N-dimethylformamide containing 1.0 mL of ethylenediamine, and place in an ice bath to cool. Afterwards, 4.2 mL o...
Embodiment 3
[0044] (1) Synthesis of self-healing, high mechanical strength acryloyl-containing hydrogels
[0045] Dissolve 5.8 g of glycinamide hydrochloride in 80 mL of N,N-dimethylformamide, and place in an ice bath to cool. Subsequently, 6.2 mL of acryloyl chloride was added dropwise to the solution, and the solution was stirred at room temperature for 6 hours. After stirring, add HCl solution for acidification, the pH after acidification is 4.5, and then wash with ether for 3-5 times. The pH was then adjusted to neutral by adding NaOH solution, and the solution was lyophilized overnight. The freeze-dried primary product was extracted with a methanol / ethanol mixed solution with a volume ratio of 1:4, and the extracted organic layer was concentrated in vacuo and cooled for recrystallization to obtain N-acryloylglycinamide.
[0046] Dissolve 8.2 g of L-alanine in 80 mL of N,N-dimethylformamide containing 1.6 mL of ethylenediamine, and place in an ice bath to cool. Afterwards, 7.3 mL o...
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