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Method for catalytically degrading antibiotic wastewater by double perovskite La2NiFeO6

A double perovskite and wastewater technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve difficult large-scale applications and incomplete degradation , secondary pollution and other issues, to achieve high crystallinity, excellent photocatalytic stability, and increase the effect of specific surface area

Pending Publication Date: 2020-08-18
NANJING ZHONGWEI NANO FUNCTIONAL MATERIALS RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Physicochemical technology and biotechnology have defects such as incomplete degradation, while advanced catalytic oxidation methods such as Fenton can treat some difficult-to-degrade wastewater, but the existence of ferrous iron leads to secondary pollution; ozone catalytic technology has no secondary pollution and other problems, However, the cost is high and it is difficult to achieve large-scale application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] La 2 NiFeO 6 The preparation steps of catalyst are as follows:

[0035] Step 1: After mixing lanthanum nitrate, ferric nitrate, polyvinylpyrrolidone, and N,N-dimethylformamide, put it into a constant temperature magnetic stirrer, stir and mix at 65°C, and then add nickel acetate for stirring , to obtain a spinning solution; the molar ratio of lanthanum nitrate, ferric nitrate, polyvinylpyrrolidone, nickel acetate, and N,N-dimethylformamide is 6:5:2:1:12.

[0036] Step 2: extract the spinning solution with a spinning needle, and pass it through an electrospinning instrument (the spinning speed of the electrospinning instrument is 0.18 mm min -1 , the spinning positive voltage is 15.11V, the spinning negative voltage is -4.98V, and the spinning distance is 23mm) the spinning solution is spun on the spinning carrier (tinfoil paper), and the spinning is finished, the spinning carrier is removed and Scrape off spinning fibers;

[0037] Step 3: transfer the spun fiber to ...

Embodiment 2

[0041] La 2 NiFeO 6 The preparation steps of catalyst are as follows:

[0042] Step 1: After mixing lanthanum nitrate, ferric nitrate, polyvinylpyrrolidone, and N,N-dimethylformamide, put it into a constant temperature magnetic stirrer, stir and mix at 60°C, and then add nickel acetate for stirring , to obtain a spinning solution; the molar ratio of lanthanum nitrate, ferric nitrate, polyvinylpyrrolidone, nickel acetate, and N,N-dimethylformamide is 6:5:2:1:10.

[0043] Step 2: Extract the spinning solution with a spinning needle, and pass it through an electrospinning instrument (the spinning speed of the electrospinning instrument is 0.1 mm min -1 , the positive spinning voltage is 14V, the negative spinning voltage is -5V, and the spinning distance is 20mm) the spinning solution is spun on the spinning carrier (tinfoil paper), and after the spinning is finished, the spinning carrier is removed and scraped off spinning fibers;

[0044] Step 3: transfer the spun fiber to ...

Embodiment 3

[0048] La 2 NiFeO 6 The preparation steps of catalyst are as follows:

[0049] Step 1: After mixing lanthanum nitrate, ferric nitrate, polyvinylpyrrolidone, and N,N-dimethylformamide, put it into a constant temperature magnetic stirrer, stir and mix at 70°C, and then add nickel acetate for stirring , to obtain a spinning solution; the molar ratio of lanthanum nitrate, ferric nitrate, polyvinylpyrrolidone, nickel acetate, and N,N-dimethylformamide is 6:5:2:1:15.

[0050] Step 2: extract the spinning solution with a spinning needle, and pass it through an electrospinning instrument (the spinning speed of the electrospinning instrument is 0.2 mm min -1 , the positive spinning voltage is 16V, the negative spinning voltage is -6V, and the spinning distance is 25mm) the spinning solution is spun on the spinning carrier (tinfoil paper), and when the spinning is finished, the spinning carrier is removed and scraped off spinning fibers;

[0051] Step 3: transfer the spun fiber to a v...

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PUM

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Abstract

The invention relates to a method for catalytically degrading antibiotic wastewater by double perovskite La2NiFeO6. The method comprises the following steps: mixing lanthanum nitrate, ferric nitrate,polyvinylpyrrolidone and N, N-dimethylformamide, adding nickel acetate, stirring to obtain a spinning solution, and preparing a La2NiFeO6 catalyst through electrostatic spinning, oxidation and calcination; filtering antibiotic wastewater, adding a La2NiFeO6 catalyst, stirring, carrying out a photocatalytic reaction, settling the reacted wastewater, and discharging the settled wastewater; the invention discloses a method for catalytically degrading antibiotic wastewater by double perovskite La2NiFeO6, namely synthesizing a double perovskite La2NiFeO6 nano-material catalyst, and the antibiotic wastewater is efficiently degraded under photocatalysis.

Description

technical field [0001] The present invention relates to a kind of antibiotic wastewater treatment process, more specifically, relate to a kind of utilization double perovskite La 2 NiFeO 6 The catalyst catalyzes the method for degrading antibiotic wastewater. Background technique [0002] Antibiotic wastewater comes from a wide range of sources, including life, industrial sewage discharge, hospital and pharmaceutical factory wastewater discharge, aquaculture wastewater, and landfills, which also contain a large amount of antibiotic drugs. These antibiotics left in the environment can be Entering the biological chain through drinking water, livestock and poultry products, etc., leading to the corresponding antibiotic resistance in the human body, due to the use of antibiotics, the microorganisms in the environment will produce drug-resistant genes, and pass them to humans through various channels. The health and the environment have caused great harm, among which the discha...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J35/10B01J37/34C02F1/30C02F1/72C02F101/30C02F101/38
CPCB01J37/342C02F1/30C02F1/725B01J23/002B01J23/83C02F2305/10C02F2101/30C02F2101/40C02F2101/38B01J2523/00B01J35/61B01J35/39B01J2523/3706B01J2523/842B01J2523/847
Inventor 吴敏陈明辉齐齐孙岳明
Owner NANJING ZHONGWEI NANO FUNCTIONAL MATERIALS RESEARCH INSTITUTE CO LTD
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