Distiller's grains-based biochar for adsorbing multi-component organic pollutants and preparation method thereof

A technology of organic pollutants and biochar, applied in the direction of separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of low adsorption efficiency and high cost of activated carbon, and achieve the promotion of sharing and transfer, high smoke temperature, and enhanced chemical Adsorption effect
CN113231013BActive Publication Date: 2022-03-11SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2022-03-11

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Abstract

The invention relates to a distiller's grains-based biochar for adsorbing multi-component organic pollutants and a preparation method thereof. Waste industrial distiller's grains and desulfurization wastewater from coal-fired power plants are used as raw materials, and the waste industrial distiller's grains are pretreated to obtain dry distiller's grains with distiller's grain raw material of a certain mesh number; mixing the distiller's grain raw material with an alkaline activator, and obtaining a preliminary activated distiller's grain-based biochar after high-temperature activation, cooling, and pickling; Distiller's grains-based biochar whose surface is modified by alkali metal ions, alkaline earth metal ions, transition metal ions, and acid radical ions in the desulfurization wastewater by immersing, filtering, and drying in power plant desulfurization wastewater; the distiller's grains-based biochar obtained in the above steps are inert Calcined under gas atmosphere and cooled to room temperature to obtain the final distiller's grains-based biochar with high-efficiency adsorption function. The preparation method is simple, the dosage of the activator is small, the activation temperature is low, and the industrial production is easy.
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Description

technical field

[0001] The invention relates to the technical field of biochar preparation, in particular to distiller's grains-based biochar for adsorbing multi-component organic pollutants and a preparation method thereof. Background technique

[0002] Organic pollutants are an important class of pollutants in the environment. Among them, volatile organic compounds and semi-volatile organic compounds with different saturated vapor pressures widely exist in the atmosphere, which not only induce photochemical reactions to form photochemical smog, but also accelerate the greenhouse effect and promote the formation of PM2.5 , and have a greater impact on human health, such as stimulating human organs and the respiratory system, and highly toxic organic pollutants can also cause carcinogenic, teratogenic, and mutagenic effects on the human body. At present, organic pollutants emitted from fuel combustion such as coal-fired power generation, industrial boiler coal combustion, an...

Claims

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