A kind of preparation method of high-efficiency amine functionalized carbon composite adsorbent

Abstract

The invention discloses a preparation method of a high-efficiency amine-based functionalized carbon composite adsorbent. The method is as follows: a mixed aqueous solution of sucrose, organic amine and ammonium persulfate (APS) is subjected to a hydrothermal reaction, and the Cr(VI ) ions with amine-based functionalized carbon composite adsorbents with high adsorption performance. In the invention, by adding a small amount of APS in the reaction liquid, the adsorption capacity of the adsorbent for Cr(VI) ions in waste water is significantly improved. Compared with the sample prepared without adding APS, the adsorption capacity of Cr(VI) ions on the amino-functionalized carbon composite adsorbent prepared after adding APS increased by 14.9-60.1 mg / g, an increase of 13.6-238.7%.

Description

technical field

[0001] The invention relates to a preparation technology in the field of composite materials, in particular to a method for improving the adsorption performance of an amino-functionalized carbon composite adsorbent for heavy metal ions in water. Background technique

[0002] Removing heavy metal ions in industrial wastewater is one of the most difficult problems in water pollution control. It is a more economical and effective method to enrich heavy metal ions with adsorbents and then separate them from water. Adsorbents with excellent performance can effectively remove heavy metal ions in wastewater, and reduce the concentration of heavy metal ions in wastewater to below the specified discharge standards.

[0003] Activated carbon is a widely used high-efficiency adsorbent and is also used for the adsorption of heavy metal ions. However, the commonly used activated carbon needs to be activated at 800-2000°C to have good adsorption performance. The activation...

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