Composite adsorbent for efficiently removing mixed pollutants in wastewater and preparation method of composite adsorbent

A composite adsorption and pollutant technology, applied in water pollutants, alkali metal compounds, water/sewage treatment, etc., to achieve the effect of high reusability, high yield and simple reaction conditions

Active Publication Date: 2020-08-11
HEFEI UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0005] Based on the existing problems of the above-mentioned prior art, the object of the present invention is to provide a composite adsorbent for efficiently removing mixed pollutants (tetracycline and copper ions) in wastewater and a preparation method thereof to solve the problem of mixed pollutants (tetracycline and copper ions) in wastewater. The problem of simultaneous adsorption of pollutants

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  • Composite adsorbent for efficiently removing mixed pollutants in wastewater and preparation method of composite adsorbent
  • Composite adsorbent for efficiently removing mixed pollutants in wastewater and preparation method of composite adsorbent
  • Composite adsorbent for efficiently removing mixed pollutants in wastewater and preparation method of composite adsorbent

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Embodiment 1

[0030] The present embodiment prepares the composite adsorbent for efficiently removing antibiotics and heavy metal ions in wastewater according to the following steps:

[0031] Step 1, preparation of nano-flaky zinc oxide microsphere material

[0032] Under magnetic stirring, 3 mmol of zinc acetate Zn(Ac) 2 2H 2 O, 6mmol urea CO(NH 2 ) 2 Dissolve 0.3mmol trisodium citrate in 75mL deionized water, continue to stir for 30min, then transfer to a 100mL stainless steel autoclave lined with Teflon, and react in an oven at 120°C for 6h;

[0033] After the reaction, the obtained product was washed sequentially with deionized water and absolute ethanol, and dried in a vacuum oven at 80°C for 12 hours to obtain zinc carbonate and zinc hydroxide precursors, which were designated as ZHC precursors;

[0034] The ZHC precursor was calcined in the air at 300°C for 2 hours to obtain nano-flaky zinc oxide microspheres;

[0035] Step 2. Preparation of ZnO@Zn-MO-74 composite material

[0...

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Abstract

The invention discloses a composite adsorbent for efficiently removing mixed pollutants in wastewater and a preparation method of the composite adsorbent. The preparation method comprises the following steps: firstly, preparing nano flaky zinc oxide microspheres, and then preparing a metal organic framework Zn-MOF-74 by taking the nano flaky zinc oxide microspheres as a sacrificial template, so asto obtain a composite material ZnO@Zn-MOF-74 of nano zinc oxide and the metal organic framework, namely the composite adsorbent. The preparation process is simple, the cost is relatively low, and theobtained composite adsorbent has relatively high removal rate on antibiotics (tetracycline) and heavy metal ions (copper ions) in wastewater.

Description

technical field [0001] The invention belongs to the technical field of environmental protection materials, and in particular relates to a composite adsorbent for efficiently removing mixed pollutants (tetracycline and copper ions) in waste water and a preparation method thereof. Background technique [0002] Antibiotics are an emerging class of organic pollutants, which are widely used to treat human and animal diseases. Due to the increase in antibiotic resistance incidents, they have attracted widespread public attention. Antibiotics are widely used to treat bacterial infections and are used in large quantities as feed additives to promote animal growth in various aquaculture. However, typically less than 30% of an antibiotic dose is absorbed by humans and animals, with the rest released into the environment through urine and feces. If these excreta are discharged into the aquatic environment without any treatment, a large amount of antibiotics will accumulate in the aqua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20C02F101/30
CPCB01J20/226B01J20/06B01J20/28054C02F1/285C02F1/281C02F2101/30C02F2101/20
Inventor 郭志强杨凡军杨荣荣陈锐孙雷李媛徐进章
Owner HEFEI UNIV OF TECH
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