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Heavy metal composite adsorbing material prepared from banana peel and preparation method thereof

A composite adsorption material and composite material technology are applied in the field of composite adsorption materials for removing heavy metal ions in wastewater, which can solve the problems of high adsorbent cost and peel pollution, and achieve the effects of good recyclability, improved adsorption effect, and simple operation process.

Inactive Publication Date: 2020-08-11
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on the problems existing in the above-mentioned prior art, the object of the present invention is to provide a heavy metal composite adsorption material prepared from banana peel and its preparation method, so as to alleviate the serious pollution of the existing peel and the high cost of the adsorbent.

Method used

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  • Heavy metal composite adsorbing material prepared from banana peel and preparation method thereof
  • Heavy metal composite adsorbing material prepared from banana peel and preparation method thereof
  • Heavy metal composite adsorbing material prepared from banana peel and preparation method thereof

Examples

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Embodiment 1

[0040] In this embodiment, banana peels are used as raw materials to prepare composite adsorption materials according to the following steps:

[0041] Step 1, prepare banana peel nanocellulose

[0042] Fresh banana peels were washed several times with deionized water, and then put into 500 mL of 1% Na 2 SO 3 Soak in the solution for 24 hours to inhibit its oxidation, and then fully wash with ethanol and deionized water to remove surface impurities and obtain clean banana peels;

[0043] Dry the washed banana peel in an oven at 60°C, then crush and pass through a 100-mesh sieve to obtain banana peel powder;

[0044] Take 5g of banana peel powder and place it in 100mL of 50g / L KOH solution, stir at room temperature for 14h, centrifuge to remove the supernatant, wash the remaining residue with water until neutral, and obtain primary alkalized banana peel powder;

[0045] Disperse the once alkalized banana peel powder in deionized water, and adjust the pH to 5 with acetic acid,...

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Abstract

The invention discloses a heavy metal composite adsorbing material prepared from banana peel and a preparation method of the heavy metal composite adsorbing material. The composite adsorbing materialis obtained by uniformly loading Fe3O4 nanoparticles on the surface of banana peel nanocellulose prepared from banana peel and then grafting amino. The preparation process is simple, the cost is low,and the obtained composite adsorbing material is high in removal rate of heavy metal 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 adsorption material for removing heavy metal ions in waste water prepared from banana peels. Background technique [0002] China is one of the ancient countries that cultivate bananas in the world. In 2017, 926,000 tons of bananas were sold to China from all over the world, accounting for 1 / 4 of my country's total fruit imports, but a large number of banana peels (about 30% of the fruit weight) could not be processed in time, resulting in Great waste of resources and environmental pollution. Banana peel is mainly composed of pectin, cellulose, hemicellulose and lignin, and the content of cellulose reaches 37.2%. In addition, the internal structure of banana peel is loose and porous, and contains a large number of functional groups such as hydroxyl and carboxyl, which is an ideal material for making adsorbents. [0003] In recen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/24B01J20/06B01J20/267B01J20/28009C02F1/286C02F1/285B01J2220/4825C02F2101/20
Inventor 郭志强杨荣荣杨凡军陈锐孙雷李媛徐进章
Owner HEFEI UNIV OF TECH
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