Method for improving organic matter adsorbing performance of activated carbon, product prepared thereby and application thereof

Abstract

The invention provides a method for improving the organic matter adsorbing performance of activated carbon, a product prepared thereby and the application thereof. The activated carbon prepared by themethod can effectively absorb organic matters; in the preparation process of the activated carbon, a technology is simple, modification treatment to the activated carbon can be completed through adjustment of the carbonization temperature and the carbonization atmosphere, and subsequent reprocessing is not required, so that by the technological process, the cost can be greatly reduced; in the modification treatment, alkaline gas generated by a spherical polymer itself is further used as a modifier, so that reasonable utilization of energy is achieved; in a manner in which the preparation andthe modification are carried out simultaneously, microporous structures on the surface of the activated carbon can be greatly increased and the specific surface area of the activated carbon is increased; compared with a treatment method of preparing the spherical activated carbon first and then modifying, the method provided by the invention has the advantages as follows: the preparation process is simple, and the prepared activated carbon has stronger adsorption capacity and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation, and in particular relates to a method for improving the performance of activated carbon for absorbing organic matter and the prepared product and use thereof. Background technique [0002] As a commonly used adsorbent, activated carbon has a wide range of applications. In order to obtain activated carbon with higher adsorption efficiency or better adsorption selectivity, it is often necessary to modify the surface functional groups. There are two main ways to generate functional groups on the surface of activated carbon: one is the residue left by incomplete carbonization during the preparation of activated carbon, which is often inevitable and difficult to be effectively controlled; the other is to use modifiers to modify the surface of activated carbon. However, the existing surface chemical modification method is cumbersome and requires the use of a large amount of oxidiz...

AI Technical Summary

Problems solved by technology

There are two main ways to produce functional groups on the surface of activated carbon: one is the residue left by incomplete carbonization during the preparation of activated carbon, which is often unavoidable and difficult to be effectively controlled; the other is to use modifiers to modify the surface of activated carbon. However, the existing surface chemical modification method is cumbersome and requires the use of a large amount of oxidizing agent, reducing agent or metal solution, and the further treatment of waste liquid will increase the preparation process. the cost of

However, when unmodified activated carbon is used as an adsorbent, it often has defects such as effective adsorption performance, resulting in energy consumption.

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