Magnetic humic acid nano material as well as preparation method and application of magnetic humic acid nano material

A technology of nano-materials and humic acid, applied in the field of nano-materials, can solve the problems of dye toxicity and carcinogenicity, and achieve high recycling rate, good practicability, and high removal efficiency

Active Publication Date: 2014-04-30
克雷伯氏环保科技(苏州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, many dyes themselves are toxic or even carcinogenic

Method used

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  • Magnetic humic acid nano material as well as preparation method and application of magnetic humic acid nano material
  • Magnetic humic acid nano material as well as preparation method and application of magnetic humic acid nano material
  • Magnetic humic acid nano material as well as preparation method and application of magnetic humic acid nano material

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Experimental program
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Embodiment 1

[0023] The preparation of embodiment 1 magnetic humic acid nanomaterial

[0024] The co-precipitation method is used to prepare magnetic humic acid nanomaterials, and the specific process is as follows:

[0025] Take 6.1g FeCl 3 ·6H 2 O and 4.2 g FeSO 4 ·7H 2 Dissolve O in 100mL of water, then heat to 90°C, then quickly add 10mL of 25% ammonia water, and finally add 50mL of humic acid, then heat at 90°C for 30min and cool to room temperature. After the reaction, the black precipitate was washed with ultrapure water to neutrality, and the black precipitate was obtained, which was the magnetic humic acid nanomaterial particle.

[0026] The prepared magnetic humic acid nanomaterial particles were physically and chemically characterized as follows:

[0027] Magnetic humic acid, magnetic pure Fe 3 o 4 and the infrared images of pure humic acid as figure 1 As shown, it can be seen that the magnetic humic acid is at 582cm -1 There is a stretching vibration of Fe-O at 1630cm ...

Embodiment 2

[0033] Embodiment 2 magnetic humic acid is to the adsorption property of methylene blue dye

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Abstract

The invention discloses a magnetic humic acid nano material as well as a preparation method and application of the magnetic humic acid nano material. An isoelectric point of the magnetic humic acid nano material is negatively charged when the pH value is 3.2 and the pH value is more than 3.2-9.5; the magnetic induction intensity of magnetic humic acid is 62.88emu / g; the magnetic humic acid is in a torispherical form; the magnetic humic acid contains 22% of humic acid; the structure of the magnetic humic acid is formed by covering humic acid on the outer surface of a magnetic Fe3O4 crystal; in the magnetic humic acid nano material, the humic acid is connected to Fe3O4 mainly through coordination. The magnetic humic acid nanoparticle disclosed by the invention is low in price, environmentally-friendly, high in removal efficiency on cationic dye in wastewater, high in recovery rate and the like; and therefore, the magnetic humic acid nanoparticle can be widely used in dye absorption, water treatment, serving as an adsorbent and other fields, and has the excellent practicability.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a magnetic humic acid nanomaterial and its preparation method and application. Background technique [0002] With the development of industrialization, water pollution is becoming more and more serious, and one of the main types of pollution is dyes. Dye wastewater exists in chemical industry wastewater such as textile wastewater, papermaking wastewater, plastic wastewater, food and cosmetic wastewater. The high chroma of these wastewater prevents the entry of light and affects the photosynthesis of aquatic organisms. Some dyes can also chelate heavy metal ions, endangering fish and other aquatic animals and plants. In addition, many dyes are themselves toxic or even carcinogenic. Therefore, it is of great environmental significance to study the removal of dyes in water. [0003] There are many methods for treating dyes in water, such as adsorption, flocculation, chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30B82Y40/00C02F1/28
Inventor 陈荣平张银龙王晓燕魏庆芝马爱军蒋为民吴光前沈连峰秦卫华
Owner 克雷伯氏环保科技(苏州)有限公司
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