Preparation method of high stability bio-carbon based iron carbide for degrading dyes

A high-stability, biochar technology, used in chemical instruments and methods, water pollutants, alkali metal oxides/hydroxides, etc. problems, the effect of reducing energy consumption

Inactive Publication Date: 2018-10-02
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The activity and service life of the modifier prepared in this way will be reduced

Method used

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  • Preparation method of high stability bio-carbon based iron carbide for degrading dyes
  • Preparation method of high stability bio-carbon based iron carbide for degrading dyes
  • Preparation method of high stability bio-carbon based iron carbide for degrading dyes

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Embodiment 1

[0038] Example 1 A highly stable biochar-based iron carbide material for degrading dyes, which is made by mixing biomass raw materials and iron precursors at a mass ratio of 1:2.

[0039] Among them: the iron precursor is Fe(NO 3 ) 3 9H 2 O, the biomass raw material is corn stalks.

[0040] The preparation method of the highly stable biochar-based iron carbide material of the degradation dye comprises the following steps:

[0041] (1) Grinding the biomass raw material, activating the raw material with phosphoric acid after the crushing, preparing phosphoric acid-modified biochar, and passing the obtained biochar through an 80-mesh sieve.

[0042] (2) The phosphoric acid modified biochar and the iron precursor were weighed according to the ratio.

[0043] (3) Fully immerse the phosphoric acid-modified biochar in the solution containing the iron precursor, and stir for 20 hours.

[0044] (4) The impregnated mixture was dried in an oven at 105° C. for 48 hours to obtain drie...

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Abstract

The invention relates to a bio-carbon based iron carbide material for degrading dyes. The material is prepared by mixing bio-carbon and an iron precursor according to a mass ratio of 1:2. At the sametime, the invention also discloses a preparation method of the bio-carbon based iron carbide material. The price is cheap. The iron carbide material is high efficient, has dual functions of adsorptionand degradation, can be repeatedly used in cycle, and can stably exist under different alkali/acid conditions. The degrading effect is better than that of zero valent iron and bio-carbon.

Description

technical field [0001] The invention relates to a biochar-based iron carbide material with high stability, in particular to a biochar-based iron carbide material which degrades dyes. Background technique [0002] Activated carbon is easy to prepare and has a large specific surface area, but it is difficult to regenerate and generally cannot be reused. Its adsorption of pollutants is mainly physical adsorption, which is easy to cause desorption of pollutants, which limits its application range. Zero-valent iron is low-toxic and cheap, and can reduce and remove a variety of toxic and harmful pollutants [1], but its properties are unstable, and it is easy to be oxidized in the air for a long time and easy to agglomerate in aqueous solution. Nanoscale zero-valent iron (nZVI) is more excellent and effective than zero-valent iron in the field of pollution remediation due to its higher reactivity and specific surface area. [0003] Biochar is one of the research hotspots in recen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F101/30C02F103/30
CPCB01J20/0229B01J20/20B01J20/28009B01J2220/4825C02F1/281C02F2101/308C02F2103/30
Inventor 张静赵楠尹铮
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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