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

Pending Publication Date: 2022-02-08
LISHUI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings new challenges to industrial wastewater treatment, and also brings opportunities for deep utilization of resources. Therefore, it is urgent to develop novel and effective technologies, and to deeply understand the impact of such technologies on the economy and life cycle, so as to efficiently treat industrial wastewater. Disposal and resource reuse

Method used

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  • Multifunctional hydrogel for immobilizing SRB through microbiological method and preparation method thereof
  • Multifunctional hydrogel for immobilizing SRB through microbiological method and preparation method thereof
  • Multifunctional hydrogel for immobilizing SRB through microbiological method and preparation method thereof

Examples

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Effect test

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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Abstract

The invention discloses multifunctional hydrogel for immobilizing SRB through a microbiological method and a preparation method of the multifunctional hydrogel. The multifunctional hydrogel for immobilizing SRB through the microbiological method can remove SO4 < 2-> and heavy metal ions in wastewater, and a practical and effective new method is provided for improving the pH of acid mine wastewater and efficiently removing heavy metal. The hydrogel adsorbing the heavy metal can realize desorption of heavy metal ions after acid pickling, so that reasonable reutilization of resources is realized, and economic circulation and sustainability are realized. In addition, the hydrogel has stable physical and chemical properties and can be recycled for multiple times, so that the wastewater treatment cost is reduced.

Description

technical field [0001] The invention relates to a multifunctional hydrogel for immobilizing SRB by a microbial method and a preparation method thereof, belonging to the fields of polymer material technology, wastewater treatment and resource reuse. Background technique [0002] Water is not only an indispensable resource, but also the carrier of many other valuable resources. With population growth and climate change accelerating, our economy urgently needs to transition to a more sustainable model. Achieving such a transition not only requires us to reassess and optimize the use of resources at the whole society level from the perspective of industrial ecology, but also requires the development of new technologies to obtain or recycle scarce resources from unconventional sources. Many of these unconventional sources exist in the form of aqueous solutions, including industrial wastewater, municipal wastewater, seawater, and various high-saline aqueous solutions. Taking aci...

Claims

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Application Information

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IPC IPC(8): B01J13/00B01J20/26B01J20/28B01J20/30C02F1/28C02F3/34C08F220/58C08F222/38C02F101/20
CPCB01J13/0065B01J20/261B01J20/28047C02F1/285C02F3/34C08F220/58C02F2101/20C08F222/38
Inventor 王黎瑾李长兴严侦云
Owner LISHUI UNIV
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