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Magnetic biomass carbon-quaternary phosphonium salt sterilization material, and preparation method and using method thereof

A magnetic biomass charcoal, biomass charcoal technology, applied in the fields of botanical equipment and methods, chemicals for biological control, chemical instruments and methods, etc. Recycling and other issues, to achieve high-efficiency sterilization, good sterilization efficiency, and the effect of overcoming drug residues

Active Publication Date: 2019-09-13
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the defects in the prior art that quaternary phosphonium salt water-soluble fungicides cannot be effectively recycled after being used in water bodies, resulting in a large amount of medicament residues and the inability to carry out long-term sterilization, the present invention provides a kind of fungicide with good bactericidal effect and long-term effect. Bactericidal, low-cost, recyclable organic-inorganic composite bactericidal material

Method used

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  • Magnetic biomass carbon-quaternary phosphonium salt sterilization material, and preparation method and using method thereof
  • Magnetic biomass carbon-quaternary phosphonium salt sterilization material, and preparation method and using method thereof
  • Magnetic biomass carbon-quaternary phosphonium salt sterilization material, and preparation method and using method thereof

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Effect test

Embodiment 1

[0050] This embodiment is the preparation process of magnetic biochar, including the following steps, first preparing magnetic biochar, specifically:

[0051] 1) Preparation of precursor biochar

[0052] First, refer to the method involved in the patent Chinese patent application number CN200920232191.9 to obtain corn stalk charcoal at 500°C, wash the corn stalks with tap water and deionized water in sequence, and then dry them in an electric blast drying oven at 80°C for 12 hours.

[0053] The dried corn stalks were transferred to the reactor of the straw charcoal plant, and the temperature was programmed to rise under low oxygen conditions, starting from 200°C, and each temperature node (300°C and 400°C) was kept for 1.5h until it reached 500°C. No more heat up. When no black smoke is discharged from the reaction furnace, the carbon making device can be closed, and after cooling to room temperature, the prepared biochar is ground and sieved.

[0054] 2) Preparation of magn...

Embodiment 2

[0060] This embodiment is the preparation process of magnetic biomass charcoal-quaternary phosphonium salt bactericidal material (mass ratio 1:1), the main steps are as follows:

[0061] 1) Take 1.0 g of the magnetic biochar prepared in Example 1, place it in a beaker containing 200 mL of deionized water, and add 1.0 g of tributyldodecylphosphine bromide at the same time, and stir the magnetic particles overnight at room temperature (12h);

[0062] 2) After the impregnation is sufficient, the temperature is raised to 65°C, and the hydrothermal reaction is carried out for 4 hours. After cooling to room temperature, the product was magnetically separated, washed several times until the pH of the sample washing solution was neutral, and placed in a vacuum drying oven (70°C, -0.06MPa) to finally obtain a magnetic biochar with a mass ratio of 1:1- Quaternary phosphonium salt bactericidal material.

[0063] Such as figure 2 , the resulting product has a saturation magnetization ...

Embodiment 3

[0065] Preparation of magnetic biochar-quaternary phosphonium salt bactericidal material (mass ratio 1:10)

[0066] Get 1.0g of the magnetic biochar prepared in Example 1, place it in a beaker containing 200mL of deionized water, and add 10.0g of tributyldodecylphosphine bromide simultaneously, and stir the magnetic particles overnight at room temperature (12h ), fully impregnated. The temperature was raised to 65°C, and the hydrothermal reaction was carried out for 4h. After cooling to room temperature, the product was magnetically separated, washed several times until the pH of the sample washing liquid was neutral, and placed in a vacuum drying oven (70°C, -0.06MPa), to finally obtain magnetic biochar with a mass ratio of 1:10- Quaternary phosphonium salt bactericidal material.

[0067] Such as figure 2 , the resulting product has a saturation magnetization of 53.29emu / g (curve 3) at room temperature; as image 3 , the XRD spectrogram presents corresponding magnetic ir...

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Abstract

The invention discloses a magnetic biomass carbon-quaternary phosphonium salt sterilization material, and a preparation method and a using method thereof, and belongs to the field of water treatment sterilization materials. The preparation method comprises the following steps: 1) selecting corn straw biomass carbon as a precursor, and preparing magnetic biomass carbon by a coprecipitation process;and 2) adding the magnetic biomass carbon to deionized water, then adding a quaternary phosphonium salt, performing magnetic particle stirring at room temperature, raising the temperature after the impregnation is sufficient, carrying out a hydrothermal reaction, and then cooling to room temperature to obtain the sterilization material. The temperature is raised to 60-70 DEG C. The RECYCLING of the biomass carbon material is effectively realized, the long-acting sterilization of the quaternary phosphonium salt bactericide and the magnetic recovery and recycling of the materials are realized,the residue of the bactericide is reduced, and a foundation is laid for the effective removal of microorganisms in wastewater.

Description

technical field [0001] The invention relates to a magnetic biomass charcoal-quaternary phosphonium salt bactericidal material, a preparation method and a use method, which belong to the technical field of water treatment and environmental protection, and are mainly used for sterilizing treatment of industrial circulating water, domestic sewage and oilfield reinjection water, etc. Background technique [0002] The speed of urbanization in my country is accelerating, the urban population base is increasing, the urban population is becoming more and more concentrated, and the scale effect is becoming more and more obvious. Correspondingly, domestic garbage, domestic sewage and industrial water generated by urban residents are increasing year by year, and a large amount of sewage is directly discharged without effective treatment, which will not only cause serious water environmental pollution, but also exacerbate the shortage of water resources in my country. [0003] Urban sew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/20A01N25/08A01P1/00C02F1/50C02F1/28
CPCA01N57/20A01N25/08C02F1/50C02F1/288A01P1/00C02F1/448C02F1/283C02F2303/04C02F2103/023C02F2103/365Y02A40/22Y02P60/21A01N57/34A01N65/00
Inventor 王芳付玉豪生弘杰卞永荣蒋新
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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