Magnetic Mxene microbial carrier material and preparation method thereof

A microbial carrier and magnetic technology, which is applied in the field of magnetic Mxene microbial carrier material and its preparation, can solve the problems of inability to achieve chemical modification or modification effect of iron ferric oxide, inability to achieve recyclability, inability to use oilfield wastewater, etc., to achieve capacity Reinforcement, good dispersibility, and increased activity

Active Publication Date: 2022-05-10
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this material can use solar energy to provide suitable heat for microbial growth in a low-temperature environment, it cannot be used to treat oilfield wastewater and cannot be recycled.
At present, those skilled in the art will use ultrasonic means in the synthesis of magnetic Mxene materials, but ultrasound is carried out continuously before Mxene is loaded with iron tetroxide, and its function is only to improve the dispersion and dissociation effect of Mxene materials to a certain extent , this method is just a simple physical dispersion and dissociation method, which cannot realize the chemical modification or modification effect of ferric oxide on graphene oxide.
In addition, there are still many problems in the current use of ultrasonic breakers, such as the corrosion and damage of the reaction liquid to the probe of the ultrasonic breaker, the continuous dripping of raw materials and other open systems to maintain the pH of the reaction liquid, and the need for external heat sources to control the reaction temperature, etc.

Method used

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  • Magnetic Mxene microbial carrier material and preparation method thereof
  • Magnetic Mxene microbial carrier material and preparation method thereof
  • Magnetic Mxene microbial carrier material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A kind of magnetic Mxene microorganism carrier material, comprises magnetic MXene material and lecithin, and described magnetic MXene material is made of Ti 3 AlC 2 and iron salt, the mass ratio of the magnetic MXene material to lecithin is 5:4.

[0033] Its preparation method comprises the following steps:

[0034] (1) Preparation of Mxene material

[0035] Take 3.5 g Ti 3 AlC 2 Put the powder (200 mesh) into a 100 mL plastic beaker, add an appropriate amount of 30% HF solution and stir at 30 °C for 24 h, centrifuge the above solution at 8000 rpm / min to remove residual impurities, and wash with deionized water and absolute ethanol The wet precipitate was alternately washed until the pH was 5, followed by stirring with dimethyl sulfoxide (DMSO) at 40 °C for 24 h. Centrifuge after the reaction, discard the supernatant, and wash the precipitate with deionized water several times to remove residual DMSO solution. Then, the precipitate was dispersed in deionized water...

Embodiment 2

[0041] A kind of magnetic Mxene microorganism carrier material, comprises magnetic MXene material and lecithin, and described magnetic MXene material is made of Ti 3 AlC 2 and iron salt, the mass ratio of the magnetic MXene material to lecithin is 5:4.

[0042] Its preparation method comprises the following steps:

[0043] (1) Preparation of Mxene material

[0044] Take 3.5 g Ti 3 AlC 2 Put the powder (200 mesh) into a 100 mL plastic beaker, add an appropriate amount of 30% HF solution and stir at 40 °C for 24 h, centrifuge the above solution at 8000 rpm / min to remove residual impurities, and wash it with deionized water and absolute ethanol The wet precipitate was alternately washed until the pH was 6, followed by stirring with dimethyl sulfoxide (DMSO) at 40 °C for 24 h. Centrifuge after the reaction, discard the supernatant, and wash the precipitate with deionized water several times to remove residual DMSO solution. Then, the precipitate was dispersed in deionized wa...

Embodiment 3

[0050] A kind of magnetic Mxene microorganism carrier material, comprises magnetic MXene material and lecithin, and described magnetic MXene material is made of Ti 3 AlC 2 and iron salt, the mass ratio of the magnetic MXene material to lecithin is 5:2.

[0051] Its preparation method comprises the following steps:

[0052] (1) Preparation of Mxene material

[0053] Take 3.5 g Ti 3 AlC 2 Put the powder (200 mesh) into a 100 mL plastic beaker, add an appropriate amount of 30% HF solution and stir at 40 °C for 12 h, centrifuge the above solution at 8000 rpm / min to remove residual impurities, and wash with deionized water and absolute ethanol The wet precipitate was alternately washed until the pH was 6, followed by stirring with dimethyl sulfoxide (DMSO) at 40 °C for 24 h. Centrifuge after the reaction, discard the supernatant, and wash the precipitate with deionized water several times to remove residual DMSO solution. Then, the mass ratio of the precipitate to water was 1...

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Abstract

The invention discloses a magnetic MXene microbial carrier material which comprises a magnetic MXene material and lecithin in a mass ratio of 5: (2-4), the preparation method comprises the following steps: mixing and stirring Ti3AlC2 powder and an HF solution in a plastic beaker, carrying out centrifugal impurity removal and washing, carrying out stirring reaction in a DMSO solution, and carrying out ultrasonic treatment, suction filtration and vacuum drying to obtain a Ti3AlC2 nanosheet; the preparation method comprises the following steps: carrying out ultrasonic treatment on an iron source and Ti3AlC2 solid powder in water, stirring, centrifuging and drying to obtain Fe3O4 / MXene powder; and adding the Fe3O4 / MXene powder and lecithin into a solvent for reaction to obtain a target product. The preparation process is simple, the prepared material can adsorb suspended solids in oilfield wastewater and effectively increase microbial activity, the wastewater treatment capacity of microorganisms is greatly improved, the material can be recycled under the action of an external magnetic field, and the production cost is reduced.

Description

technical field [0001] The invention relates to a microbial carrier material and a preparation method thereof, in particular to a magnetic Mxene microbial carrier material and a preparation method thereof. Background technique [0002] As an important material raw material of the national economy, petroleum has been widely used in transportation, chemical production and other fields, and its non-renewable nature further determines its importance and scarcity. Especially in recent years, with the acceleration of social and economic development, the demand for oil is increasing day by day, but the supply of oil is showing a downward trend year by year. The yield is low, and oil resources are wasted. Therefore, technology research and development related to enhanced oil recovery is not only related to the development of the oil industry itself, but also related to the stable development of the national economy. After years of research and development, oil recovery technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00
CPCC02F3/00C02F2203/006C02F2003/001
Inventor 沈健田雨章峻蒋雪峰万明会胡朋朋孙高琪莫宏
Owner NANJING NORMAL UNIVERSITY
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