Tetracycline purification fiber membrane and preparation method thereof

A tetracycline, fiber membrane technology, applied in the field of water treatment, can solve the problems of affecting stability, poor ductility, poor thermal stability and chemical durability

Pending Publication Date: 2021-09-07
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reported polymer- and carbon-based films usually suffer from poor thermal stability and chemical durability, which limits their practical applications.
However, ceramic-based porous fiber membranes with high specific surface area and excellent thermal stability as well as chemical durability often exhibit brittleness, poor ductility, and weak flexural deformation characteristics, and affect their long-term use stability.

Method used

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  • Tetracycline purification fiber membrane and preparation method thereof
  • Tetracycline purification fiber membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A tetracycline purification fiber membrane and a preparation method thereof, comprising the steps of:

[0024] 1. Mix 2.45g of chromium triboride, 1.05g of gallium phosphide and 5.25g of erbium(III) perchlorate hexahydrate and put it into a vacuum resistance furnace at 2200°C for 20 hours of heating reaction. The product is soaked in 100mL with a concentration of 19g / L The phloroglucinol ethanol solution was added into a planetary grinder, mixed and ground to obtain particles with an average particle size of 150 nm, and vacuum-dried to obtain a photocatalytic oxidant.

[0025] 2. Add 7g of the photocatalyst oxidant prepared in step 1, 0.8g of dispersant BYK-9076, 0.3g of foaming agent MIBC, and 24g of polymethyl methacrylate into 100mL of acetone and a mixed solvent of DMF with a volume ratio of 1:1 As the shell spinning solution and thermoplastic polyurethane elastomer melt as the core spinning solution, the spinning voltage is 20kV, the shell spinning solution tempera...

Embodiment 2

[0027] A tetracycline purification fiber membrane and a preparation method thereof, comprising the steps of:

[0028] 1. Mix 1.46g of chromium triboride, 1.21g of gallium phosphide and 3.44g of erbium(III) perchlorate hexahydrate and put it into a vacuum resistance furnace at 2000°C for 24h heating reaction. The product is soaked in 100mL with a concentration of 18g / L The phloroglucinol ethanol solution was added into a planetary grinder, mixed and ground to obtain particles with an average particle size of 100 nm, and dried in vacuum to obtain a photocatalytic oxidant.

[0029] 2. Add 5g of the photocatalytic oxidant prepared in step 1, 0.5g of dispersant BYK-W961, 0.2g of foaming agent BK201, and 20g of polymethyl methacrylate into 100mL of acetone and DMF in a mixed solvent with a volume ratio of 1:1 As the shell spinning solution and thermoplastic polyurethane elastomer melt as the core spinning solution, the spinning voltage is 18kV, the temperature of the shell spinning ...

Embodiment 3

[0031] A tetracycline purification fiber membrane and a preparation method thereof, comprising the steps of:

[0032] 1. Mix 4.39g of chromium triboride, 0.81g of gallium phosphide and 8.03g of erbium(III) perchlorate hexahydrate and put it in a vacuum resistance furnace at 2400°C for 18 hours of heating reaction. The product is soaked in 100mL with a concentration of 20g / L The phloroglucinol ethanol solution was added into a planetary grinder, mixed and ground to obtain particles with an average particle size of 200nm, and vacuum-dried to obtain a photocatalytic oxidant.

[0033] 2. Add 9g of the photocatalytic oxidant prepared in step 1, 1g of dispersant BYK-W969, 0.4g of foaming agent BK204, and 26g of polymethyl methacrylate into 100mL of acetone and a mixed solvent with a volume ratio of DMF of 1:1 as The shell spinning solution and thermoplastic polyurethane elastomer melt are used as the core spinning solution. At a spinning voltage of 22kV, the temperature of the shell...

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Abstract

The invention belongs to the technical field of water treatment, and discloses a tetracycline purification fiber membrane and a preparation method thereof. The preparation method comprises the following steps of: S1, mixing chromium triboride, gallium phosphide and erbium perchlorate (III) hexahydrate, performing vacuum calcination, soaking the product in a phloroglucinol ethanol solution, mixing and grinding, and performing vacuum drying to obtain a photocatalytic oxidant; S2, adding the photocatalytic oxidant, a dispersing agent, a foaming agent and polymethyl methacrylate into a mixed solvent of acetone and DMF together, and well stirring to obtain a shell spinning solution, the volume ratio of acetone to DMF being 1: 1 in the mixed solvent; and S3 , taking a thermoplastic polyurethane elastomer melt as a core layer spinning solution, and performing coaxial electrospinning on the core layer spinning solution and the shell layer spinning solution to obtain the tetracycline purification fiber membrane. The membrane can utilize oxygen in water to efficiently degrade tetracycline in water under the action of visible light.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a tetracycline purification fiber membrane and a preparation method thereof. Background technique [0002] Tetracyclines are the second most produced pharmaceutical antibiotics worldwide. Recently, tetracyclines have been detected in both surface and groundwater, raising widespread concern about the spread of microbial antibiotic resistance, which inevitably poses major hazards to human health and aquatic ecosystems. Tetracycline-containing wastewater is generally treated by heating, catalytic oxidation, ozonation, and adsorption, among which adsorption has been proven to be a convenient, versatile, low-cost, and environmentally sustainable method. To date, the class of materials continues to evolve, such as carbon-based sorbents, metal-organic frameworks (MOFs), clay minerals, sludge-derived sorbents, and mesoporous metal oxides. However, most of these deve...

Claims

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Application Information

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IPC IPC(8): B01J27/188B01J31/18B01J35/06B01J37/08B01J37/34C02F1/30C02F1/72C02F101/34C02F101/38
CPCB01J27/188B01J31/1845B01J37/08B01J37/342C02F1/30C02F1/725C02F2101/34C02F2101/345C02F2101/38C02F2305/10B01J2231/70B01J35/59B01J35/40B01J35/39
Inventor 汤佳鹏刘希文朱俐葛彦
Owner NANTONG UNIVERSITY
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