Method for removing tetracycline in wastewater by magnetic magnesium hydroxide adsorbent

A magnesium hydroxide and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve the problems of reducing specific surface area, easy aggregation, affecting adsorption effect, etc. Achieve the effect of large adsorption capacity, simple preparation and fast adsorption time

Active Publication Date: 2019-11-01
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, magnesium hydroxide also has the characteristics of strong cohesion between particles, which makes it easy to aggregate in the process of wastewater treatment, reducing the specific surface area, thereby affecting the adsorption effect to a certain extent.

Method used

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  • Method for removing tetracycline in wastewater by magnetic magnesium hydroxide adsorbent
  • Method for removing tetracycline in wastewater by magnetic magnesium hydroxide adsorbent
  • Method for removing tetracycline in wastewater by magnetic magnesium hydroxide adsorbent

Examples

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Embodiment 1

[0029] A kind of method that magnetic magnesium hydroxide adsorbent of the present invention treats tetracycline in waste water comprises the following steps:

[0030] Add magnetic magnesium hydroxide adsorbent to the wastewater whose initial concentration of tetracycline is 400mg / L, the amount of adsorbent added per liter of wastewater is 0.2g, and the pH of the reaction system is adjusted to 6.0 with 0.1mol / L NaOH solution or HCl solution , at room temperature (usually within the range of 10°C to 40°C), put it in a shaker for 24 hours of shaking reaction, the shaker speed is 150rpm, after the reaction is completed, use a magnet to hold the composite adsorbent material, separate the material and waste water, and complete Treatment of tetracyclines in wastewater.

[0031] In this embodiment, the magnetic magnesium hydroxide adsorbent is prepared by the following method:

[0032] (1) Carrier preparation: under rapid and continuous stirring at a speed of 500 rpm, an equal volum...

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Abstract

The invention discloses a method for removing tetracycline in wastewater by virtue of a magnetic magnesium hydrate adsorbent. The method comprises the following steps: adding a self-made magnetic composite adsorbent into wastewater containing tetracycline so as to react, wherein pH value of a reaction system is 3-7; and after the reaction is finished, separating and recycling the magnetic magnesium hydrate adsorbent from the wastewater under the action of an applied magnetic field, so as to finish the removal of tetracycline in the wastewater. The method has the beneficial effects that the adsorption capacity is large, the adsorption speed is high, tetracycline in the wastewater can be powerfully removed, and the adsorbent is easily separated and recycled.

Description

technical field [0001] The invention belongs to the field of antibiotic wastewater treatment, and in particular relates to a method for removing tetracycline in wastewater by a magnetic magnesium hydroxide adsorbent. Background technique [0002] In recent years, with the increasing number of antibiotics, antibiotics are widely used and become one of the most commonly used drugs. my country is a big country in the production and use of antibiotics, and antibiotics used for disease prevention and control and livestock and poultry breeding account for more than 50% of the world's total. The massive and unreasonable (abuse) use of antibiotics poses a serious threat to the ecological environment and human health. According to the current development trend, new "super bacteria" will appear one after another, and there will be serious consequences that no medicine can be used. Therefore, how to effectively control and remove antibiotics discharged into environmental waters is ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/28B01J20/30C02F1/28C02F101/34C02F101/38
CPCB01J20/041B01J20/06B01J20/28009B01J20/28059C02F1/281C02F2101/34C02F2101/38
Inventor 陈安伟雷鸣尚翠林毅青邵继海彭亮曾清如
Owner HUNAN AGRICULTURAL UNIV
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