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A pig manure biogas residue adsorbent and method for rapidly removing doxycycline in water

A pig manure biogas residue and adsorbent technology, applied in the field of environmental governance, can solve the problems of long adsorption time, limited doxycycline adsorption capacity, and low adsorption efficiency, and achieve the effects of low preparation cost, simple operation, and industrialized production

Active Publication Date: 2022-05-17
CHINA AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of biochar in water treatment, especially the removal of doxycycline, has certain limitations. Ordinary biochar has limited ability to adsorb doxycycline from aqueous solution, and the adsorption time is long and the adsorption efficiency is low.

Method used

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  • A pig manure biogas residue adsorbent and method for rapidly removing doxycycline in water
  • A pig manure biogas residue adsorbent and method for rapidly removing doxycycline in water
  • A pig manure biogas residue adsorbent and method for rapidly removing doxycycline in water

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preparation example Construction

[0021] The invention provides a kind of preparation method of the swine manure biogas residue adsorbent (pig manure biogas residue biochar) that quickly removes doxycycline in the water body, comprising the following steps:

[0022] Mix pig manure residue and potassium permanganate aqueous solution, and ultrasonically treat it to obtain biomass-KMnO 4 The mixture was dried to obtain the dried biomass-KMnO 4 mixture;

[0023] The dried biomass-KMnO 4 The mixture is fired to obtain the pig manure and biogas residue adsorbent loaded with potassium permanganate.

[0024] The present invention mixes pig manure biogas residue and potassium permanganate aqueous solution, and ultrasonically treats it to obtain biomass-KMnO 4 The mixture was dried to obtain the dried biomass-KMnO 4 mixture. The invention utilizes pig manure biogas residues, does not waste waste resources, does not cause secondary pollution to the environment, fully utilizes resources, and is energy-saving and envi...

Embodiment 1

[0032] (1) After drying pig manure and biogas residues to constant weight, crush them with a small pulverizer for 2 to 3 times and pass through a 60-mesh screen, add them according to the solid-liquid ratio of 1:5 until the concentration of the substance is 0.1mol / L Potassium permanganate aqueous solution, and ultrasonic 2h (KH5200DE type numerical control ultrasonic cleaner) under the condition of 25 ℃, 100kHz, obtain biomass-KMnO 4 After the mixture is dried at 60°C;

[0033] (2) The biomass-KMnO dried in step (1) 4 The mixture is fired in a tube furnace at a firing temperature of 500°C, then washed and filtered with deionized water for 3 times, filtered, and dried at 60°C until the moisture content is basically 0 to obtain biogas residue loaded with potassium permanganate Biochar material (ie the swine manure and biogas residue adsorbent of the present invention).

[0034] The scanning electron microscope image of potassium permanganate modified pig manure biochar figure...

Embodiment 2

[0045] The invention discloses a preparation method of a pig manure and biogas residue adsorbent (pig manure and biogas residue biochar) for rapidly removing doxycycline in water bodies. The steps are the same as the adsorption and removal of doxycycline in the water body in Example 1, except that the initial concentration of doxycycline in the water body in Example 2 is 100 mg / L.

[0046] Take 250 mL of doxycycline solution with a concentration of 100 mg / L, add 250 mg of the swine manure and biogas residue adsorbent prepared in Example 1, place it in a magnetically stirred water bath at 25°C for constant temperature oscillation, and the oscillation time is 7 minutes. After the reaction, the solution settles , using a 0.45 μm microporous membrane for filtration. Measure the concentration of doxycycline in the solution after the reaction with an ultraviolet spectrophotometer, and the calculated adsorption results are shown in image 3 . The results showed that with the increa...

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Abstract

The invention relates to a preparation method of a pig manure biogas residue adsorbent, a pig manure biogas residue adsorbent and a method for rapidly removing doxycycline in water bodies, belonging to the technical field of environmental treatment. The preparation method of the present invention comprises mixing pig manure biogas residue and potassium permanganate aqueous solution, ultrasonic treatment, to obtain biomass-KMnO 4 mixture, dried to obtain dried biomass‑KMnO 4 mixture; the dried biomass-KMnO 4 The mixture is fired to obtain the pig manure and biogas residue adsorbent loaded with potassium permanganate. The method of the invention is efficient, fast, economical and environment-friendly, and the purpose of efficiently, rapidly, economically and environment-friendly removing the doxycycline in the water body is achieved by loading biochar with potassium permanganate.

Description

technical field [0001] The invention relates to the technical field of environmental treatment, in particular to a preparation method of a swine manure and biogas residue adsorbent, a pig manure and biogas residue adsorbent and a method for rapidly removing doxycycline in water bodies. Background technique [0002] At present, some methods (such as adsorption, oxidation, electrochemical methods, biological treatment) have been widely used for the removal of antibiotics. Considering the removal efficiency, simplicity, safety and economic feasibility, adsorption technology is the preferred choice, but most of the current Adsorbents are more expensive. Biochar is not only cheap and easy to obtain raw materials, but also has good physical and chemical properties, high adsorption performance, and can achieve efficient physical adsorption. Therefore, based on the above characteristics, biochar has good application prospects in antibiotic-contaminated soil or water restoration. Ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/30
CPCB01J20/20C02F1/283C02F2101/30Y02A40/20
Inventor 段娜程超逊贺莉冉毅梅自力林聪
Owner CHINA AGRI UNIV
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