CN-119506738-B - Iron-based amorphous alloy, preparation method thereof and application of iron-based amorphous alloy in degradation of tetracycline antibiotics

Abstract

The invention relates to an iron-based amorphous alloy, a preparation method thereof and application of the iron-based amorphous alloy in degrading tetracycline antibiotics, wherein x, y and z respectively represent atomic percentages of Fe, si and B in the alloy, x is more than or equal to 74 and less than or equal to 84,6 and less than or equal to 16, y is more than or equal to 6 and less than or equal to 16, z is more than or equal to 6 and less than or equal to 16, and x+y+z is more than or equal to 100.

Inventors

• WEI JING
• ZENG DECHANG
• ZHENG ZHIGANG
• QIU ZHAOGUO
• BI QILIN

Assignees

• 广州航海学院

Dates

Publication Date

20260508

Application Date

20241017

Claims (6)

1. 1. The application of the iron-based amorphous alloy is characterized in that the iron-based amorphous alloy is applied to the treatment of the waste water containing the tetracycline antibiotics and used for degrading the tetracycline antibiotics, and the PH value of the waste water containing the tetracycline antibiotics is 3.3-9; The molecular formula of the iron-based amorphous alloy is Fe x Si y B z , wherein x, y and z respectively represent the atomic percentages of Fe, si and B in the alloy, x is more than or equal to 74 and less than or equal to 84,6 and less than or equal to 16, z is more than or equal to 6 and less than or equal to 16, and x+y+z=100; the preparation method of the iron-based amorphous alloy Fe 78 Si 8 B 14 comprises the following steps: S1, smelting raw materials in a smelting furnace in proportion under inert atmosphere to prepare iron-based amorphous alloy; s2, preparing the iron-based amorphous alloy prepared in the step S1 into an iron-based amorphous alloy strip through a single-roller melt-spinning method; S3, cutting the iron-based amorphous alloy strip into a sheet-shaped strip with the length of 10 mm; The step S2 specifically includes: s201, placing the alloy prepared in the step S1 into a smelting furnace, and carrying out induction heating to be in a molten state in an inert gas atmosphere; s202, before single-roller melt-spinning is carried out, the distance between a nozzle and a cooling roller is required to be adjusted to be 1-2 mm, the rotating speed of the cooling roller is set to be 55m/S, molten alloy is poured into a nozzle packet, and the molten alloy is sprayed to the surface of the cooling roller through the nozzle and cooled to form the iron-based amorphous alloy strip.
2. 2. The use of an iron-based amorphous alloy according to claim 1, wherein the thickness of the iron-based amorphous alloy strip is 10 μm to 200 μm.
3. 3. The use of the iron-based amorphous alloy according to claim 2, wherein the concentration of the tetracycline antibiotics in the wastewater containing the tetracycline antibiotics is 10-200 mg/L.
4. 4. The use of the iron-based amorphous alloy according to claim 1, wherein the pH value of the waste water containing the tetracycline antibiotics is 4-9.
5. 5. The use of the iron-based amorphous alloy according to claim 3, wherein the addition amount of the iron-based amorphous alloy ribbon is 10g/L or more.
6. 6. The use of the iron-based amorphous alloy according to claim 3, wherein the temperature of the waste water containing the tetracycline antibiotics is 30-40 ℃.

Description

Iron-based amorphous alloy, preparation method thereof and application of iron-based amorphous alloy in degradation of tetracycline antibiotics Technical Field The present disclosure relates to amorphous alloy materials and antibiotic degradation technology, and in particular relates to an iron-based amorphous alloy, a preparation method thereof and an application for degrading tetracycline antibiotics. Background Antibiotics are one of the most important medicines for preventing and treating human bacterial infection diseases, and are also used as medicines for preventing and treating animal infectious diseases and antibacterial growth-promoting additives, and are widely applied to animal husbandry and aquaculture industry. These antibiotics can enter environmental water and soil through farmland runoff, veterinary wastewater and excrement and the like, creating environmental pollution problems. The most widely studied antibiotic wastewater treatment technologies in recent years are roughly three types, adsorption, biodegradation and advanced oxidation technologies, respectively. The adsorption method is a common separation treatment technology for pollutants in water, and is simple to operate, economical, efficient and free of side effects. The core of the adsorption technology is the development of the adsorbent, and generally porous materials with low cost, rich functional groups and large specific surface area are selected. The common adsorbents in the prior researches comprise activated carbon, biochar, bentonite, chitosan, graphene and the like, while the tetracycline is the most common antibiotic in the research of the adsorption method, and has strong adsorption property due to polar functional groups such as carboxyl, acylamino and the like, so that the tetracycline is very suitable for removal by the adsorption method. However, the technology can only realize the transfer of antibiotic pollutants among different phases, and cannot realize the degradation of antibiotics. Meanwhile, the practical application of the adsorption method is limited by the corrosion resistance of the adsorbent, the recycling problem and the disposal problem of the waste adsorbent. Biodegradation is a main way for degrading antibiotics under natural conditions, and is also a common technology for treating organic wastewater in sewage treatment plants. The focus of biodegradation research is the removal mechanism and operating conditions. However, not all antibiotics are effectively degraded for a variety of reasons. First, microorganisms prefer organic matter with a rich carbon-nitrogen source in wastewater rather than antibiotics at a smaller concentration. Second, the specific degrading enzymes required for degradation cannot be induced at low concentrations of antibiotics. In addition, the biotoxicity of antibiotics also greatly inhibits the handling properties of biodegradation processes. Metal organic framework Materials (MOFs) are considered as a viable material for photocatalytic degradation of antibiotics, but cannot be applied to large-scale sewage treatment due to the severe manufacturing conditions and high cost. In recent years, zero-valent iron has been attracting more attention because of its advantages of wide applicability, low price, simple operation, no toxicity, etc. in the treatment of organic matters. The use of zero-valent nano iron to adsorb and degrade tetracycline has also been reported, the degradation product is mainly deaminated tetracycline analogue, the zero-valent iron in water is converted into ferric hydroxide, then the tetracycline is adsorbed within 15-240 min and forms degradation product, and the tetracycline is a high-efficiency chelating agent for high-valent metal ions. Tetracyclines are capable of chelating iron ions in water to form Fe-TC complexes which do not reduce the antibiotic properties of tetracyclines and therefore should be removed from contaminated wastewater before it enters a wastewater treatment plant. Meanwhile, for the zero-valent iron powder of crystalline metal simple substance, the problems of agglomeration, oxidization and the like easily occur in the processes of storage, transportation and application, so that the degradation efficiency is greatly reduced. Disclosure of Invention In order to solve the problems in the prior art, the disclosure aims to provide an iron-based amorphous alloy, a preparation method thereof and application of degrading tetracycline antibiotics, so as to solve the problem that the prior art cannot effectively degrade the tetracycline antibiotics to pollute. The molecular formula of the iron-based amorphous alloy is FexSiyBz, wherein x, y and z respectively represent the atomic percentages of Fe, si and B in the alloy, x is more than or equal to 74 and less than or equal to 84,6 and less than or equal to 16, z is more than or equal to 6 and less than or equal to 16, and x+y+z=100. The disclosure also provides a preparation method of t