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A composite adsorbent for efficiently removing heavy metal ions in wastewater and its preparation method

A technology of heavy metal ion and composite adsorption, applied in chemical instruments and methods, adsorption water/sewage treatment, organic compound/hydride/coordination complex catalyst, etc., can solve the problems of unsatisfactory adsorption effect and high cost of adsorbent, Achieve high reuse times, ideal adsorption efficiency, and overcome high costs

Active Publication Date: 2021-10-26
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a composite adsorbent for efficiently removing heavy metal ions in wastewater and a preparation method thereof, so as to solve the problems of high cost and unsatisfactory adsorption effect of existing adsorbents

Method used

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  • A composite adsorbent for efficiently removing heavy metal ions in wastewater and its preparation method
  • A composite adsorbent for efficiently removing heavy metal ions in wastewater and its preparation method
  • A composite adsorbent for efficiently removing heavy metal ions in wastewater and its preparation method

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Embodiment 1

[0035] This embodiment prepares the composite adsorbent for efficient removal of heavy metal ions in wastewater according to the following steps:

[0036] Step 1, prepare carbonized rice bran biochar material

[0037] First add fresh rice bran into a beaker filled with deionized water and ultrasonically for 20 minutes, then wash thoroughly with ethanol and deionized water in turn, remove impurities by suction filtration, then dry in a blast drying oven to remove surface moisture, and finally pass through 80 mesh Sieve to obtain washed and purified rice bran.

[0038] Take 5 g of washed and purified rice bran in a beaker filled with 80 mL of deionized water, stir evenly, transfer it to a 100 mL polytetrafluoroethylene-lined stainless steel reaction kettle, conduct hydrothermal carbonization treatment at 200 °C for 5 h, and repeatedly pump the obtained product with deionized water. Filter and wash, and then dry at 105°C for 24 hours in a blast drying oven; transfer the dried pr...

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Abstract

The invention discloses a composite adsorbent for efficiently removing heavy metal ions in waste water and a preparation method thereof. The carbonized rice bran biochar material (RB) is prepared first, and then RB@MgFeAlO is prepared. 4 Composite materials, and finally carry out amination to obtain the target product. The preparation process of the invention is simple, the cost is low, and the removal rate of heavy metal ions (especially nickel ions and cobalt ions) in high-concentration wastewater is high.

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 heavy metal ions in wastewater and a preparation method thereof. Background technique [0002] With the continuous growth of the world population, the rapid development of industrialization, agricultural activities and the excessive use of chemical substances, water pollution, especially heavy metal pollution, has become an important environmental problem, posing a serious threat to human health, causing domestic and foreign wide attention from all walks of life. Different from the pollution of other organic compounds, heavy metal pollution is enriched, and can enter the human body indirectly through the food chain, seriously endangering human health. [0003] Among them, heavy metal ions, such as cobalt (Co 2+ ), nickel (Ni 2+ ) is a common heavy metal ion in polluted wastewater. Metal nick...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28B01J31/28C02F101/20
CPCB01J20/04B01J20/20B01J31/28C02F1/281C02F2101/20
Inventor 郭志强陈锐杨凡军杨荣荣王勇李媛徐进章
Owner HEFEI UNIV OF TECH
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