Yeast in-situ immobilized nanometer zero-valent ferromagnetic material as well as preparation method and application thereof

A nano-zero-valent iron and in-situ immobilization technology is applied to the preparation of yeast in-situ immobilization nano-zero-valent ferromagnetic materials, yeast in-situ immobilization of nano-zero-valent ferromagnetic materials, and yeast in-situ immobilization of nano-zero-valent ferromagnetic materials in The application field in sewage treatment can solve the problems of easy agglomeration and poor dispersibility of heterogeneous persulfate catalysts, and achieve the effect of high dispersibility

Pending Publication Date: 2022-06-03
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problems of poor dispersion and easy agglomeration of existing nano-zero-valent iron-based heterogeneous persulfate catalysts, the invention provides a method for preparing a yeast in-situ immobilized nano-zero-valent iron magnetic material, using the preparation method The prepared yeast in-situ immobilized nanometer zero-valent ferromagnetic material, and the application of the yeast in-situ immobilized nanometer zero-valent ferromagnetic material in sewage treatment

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  • Yeast in-situ immobilized nanometer zero-valent ferromagnetic material as well as preparation method and application thereof
  • Yeast in-situ immobilized nanometer zero-valent ferromagnetic material as well as preparation method and application thereof
  • Yeast in-situ immobilized nanometer zero-valent ferromagnetic material as well as preparation method and application thereof

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Embodiment 1

[0037] see figure 1 , the preparation method of the yeast in-situ immobilized nano-zero-valent ferromagnetic material of the present invention mainly comprises three steps:

[0038] Step (1) prepare hydrothermal yeast material.

[0039] The preparation method of the hydrothermal yeast material comprises the following steps:

[0040] Step (1.1) Dissolve dry yeast powder in ultrapure water, ultrasonicate until it turns into a light yellow homogeneous solution (preferably sonicate for 30min until it turns into a light yellow homogeneous solution). Among them, the dry yeast powder is preferably washed several times with acetone, and is dissolved in the ultrapure water one after the acetone is completely dried.

[0041] Step (1.2) 50%, v / v glutaraldehyde is added to the light yellow homogeneous solution, and is kept for a certain period of time under magnetic stirring (such as 30min under magnetic stirring); wherein, dry yeast powder, ultrapure The ratio between water-glutaralde...

Embodiment 2

[0052] see figure 2 The purpose of the present invention is to solve the problems such as poor dispersibility and easy agglomeration of the existing nano-zero-valent iron-based heterogeneous persulfate catalyst, develop a new type of yeast in-situ immobilization nano-zero-valent iron magnetic material, and use wastewater containing TCH The specific methods are as follows:

[0053] (1) Rinse 2.5g dry yeast powder with acetone several times, wait for the acetone to dry completely, then dissolve it in 50mL ultrapure water, and sonicate for 30min until it becomes a light yellow homogeneous solution. Subsequently, 5 mL of glutaraldehyde (50%, v / v) was added to the above solution, kept under magnetic stirring for 30 min, and then transferred to a 100 mL hydrothermal reactor and kept at 180° C. for 12 h. After cooling to room temperature, the obtained product was first filtered with suction and washed with ultrapure water for several times, and was placed in a vacuum drying oven at...

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Abstract

The invention relates to a yeast in-situ immobilized nanometer zero-valent ferromagnetic material as well as a preparation method and application thereof. The novel yeast in-situ immobilized nano zero-valent ferromagnetic material is prepared through in-situ immobilization by taking yeast cells as a carrier, and the material has the advantages of high dispersity, high catalytic performance and easiness in recovery. When a certain amount of the material and peroxymonosulfate (PMS) are added into sewage, the magnetic material can well activate the PMS to generate free sulfate radicals, and refractory organics in the water can be continuously and effectively degraded. Through tests, the material disclosed by the invention can degrade 93.6% of TCH (Trichoderma) within 3 minutes. In addition, the material can degrade other pollutants and has certain general applicability. Tests show that the material can degrade 98.9% of malachite green (MG), 99.2% of methylene blue (MB) and 99.2% of rhodamine B (RhB) within 3 minutes, so that the material has the potential of mixed sewage treatment application.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a preparation method for yeast in-situ immobilization of nano-zero-valent ferromagnetic materials, yeast in-situ immobilization of nano-zero-valent ferromagnetic materials prepared by the preparation method, and yeast in-situ immobilization of nanometer zero-valent ferromagnetic materials. Application of zero-valent ferromagnetic materials in sewage treatment. Background technique [0002] Tetracycline hydrochloride (TCH) is a broad-spectrum antibiotic and is currently one of the most widely used and used antibiotics, and is widely used in industry, agriculture and animal husbandry. However, due to the relatively stable naphthol ring structure of tetracycline hydrochloride, it is often difficult to effectively remove it by traditional sewage treatment processes. In recent years, advanced oxidation technology based on peroxymonosulfate (PMS) has been widely used in sewage treatmen...

Claims

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Application Information

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IPC IPC(8): B01J31/00B01J23/745B01J37/16C12N1/16C02F1/72C02F101/30
CPCB01J31/00B01J23/745B01J37/16C12N1/16C12N1/005C02F1/725C02F1/722C02F2305/023C02F2101/30B01J35/33B01J35/40Y02W10/37
Inventor李辰轩李斌陈诺于士崴许为义崔康平
OwnerHEFEI UNIV OF TECH