Tobacco matrix activated carbon and preparation method thereof

Abstract

The invention discloses tobacco matrix activated carbon and a preparation method thereof. The tobacco matrix activated carbon is obtained by mixing anhydrous K2CO3, tobacco waste powder and low-density polyethylene powder and performing high-temperature carbonization in a protective gas environment. The methylene blue adsorption capacity of the activated carbon is as high as 806 mg/g and is far higher than the standard methylene blue adsorption capacity of first-grade products. Low-density polyethylene plastic is added, so activation process is more sufficient, activation effect is uniform, and the prepared activated carbon has a more developed pore structure. Potassium carbonate is used as an activating agent, generated K<+> can break a carbon chain to form a complex salt, and the catalytic process of repeated ring opening, cracking and ring opening enriches the microstructure of the activated carbon. CO2 is also a good physical activating agent, so the pore volume and the pore-forming efficiency of the activated carbon can be increased.

Description

technical field [0001] The invention belongs to the field of adsorbents, and relates to activated carbon and a preparation method of the activated carbon, in particular to activated carbon prepared by using tobacco as a raw material and the activated carbon prepared by using tobacco as a raw material. Background technique [0002] my country's tobacco planting area and output rank first in the world. Tobacco planting and product processing play an important role in the development of the national economy. Tobacco ranks first in my country's agricultural product income, second only to rice, wheat, cotton, soybeans, and corn. six. While flue-cured tobacco production boosts the economy of the tobacco area, it also produces a large amount of organic waste, including biomass waste (such as waste tobacco leaves, tobacco dust and tobacco stems) and plastic waste (such as mulch and floating trays). [0003] At present, these wastes are directly discarded or incinerated due to the la...

AI Technical Summary

Problems solved by technology

[0007] 1. The performance of activated carbon products needs to be improved;

[0008] 2. In the preparation process, binders, activators and pore-forming agents are added, and the process is relatively cumbersome, requiring multiple carbonizations, resulting in low efficiency and high cost;

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