Preparation and application of phosphorus-hybridized functional activated-carbon absorption material

Abstract

The invention relates to preparation and application of a phosphorus-hybridized functional activated-carbon absorption material. A phosphorus-hybridized functional activated-carbon absorption material is prepared by using shrimp shells as the basic raw material and using phosphoric acid low-temperature calcination for modification. A preparation method of the phosphorus-hybridized functional activated-carbon absorption material specifically includes: sequentially processing the shrimp shells with sodium hydroxide and hydrochloric acid in a pre-soaking manner, and drying to obtain precursor; crushing the precursor, using sulfuric acid with the mass fraction being about 60% to perform heating treatment, settling obtained suspension, filtering, washing until the suspension is neutral, and drying to obtain black powder; using concentrated phosphoric acid to perform calcination and activation treatment, washing until the solution is neutral, and drying to obtain phosphorus-hybridized activated carbon. The phosphorus-hybridized activated-carbon absorption material prepared by the method has the advantages that the phosphorus-hybridized activated-carbon absorption material is large in specific surface area (561m<2> / g) and good in absorption performance, and the cationic dye (methylene blue (MB)) absorption value of the phosphorus-hybridized activated-carbon absorption material reaches up to 4610mg / g and is much higher than that of other reported absorbents; in addition, the phosphorus-hybridized activated-carbon absorption material is wide in raw material source and low in cost, and resource recycling and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of resource reuse and new environmental functional materials, in particular to the preparation and application of a phosphorus-hybridized functional activated carbon adsorption material. Background technique [0002] my country is extremely rich in shrimp resources, and the shrimp processing industry is relatively developed. In the process of processing shrimp, a large amount of shrimp shell waste is bound to be produced. Some of these discarded shrimp shells are processed into feed, and only a small amount is used to extract astaxanthin, chitin, amino acids, etc., while most of them are not fully utilized, which not only causes waste, but also pollutes the environment. With the increase in the quantity of exported frozen shrimp in my country, it is increasingly urgent to comprehensively utilize a large amount of waste shrimp shells generated in the processing process. [0003] As a porous carbon adsorption...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of shortage of carbon sources for the production of activated carbon, and to provide a preparation method and application of phosphorus-hybridized functionalized activated carbon adsorption materials in order to realize resource reuse and protect the environment

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