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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

Active Publication Date: 2022-03-11
SOUTHEAST UNIV
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Problems solved by technology

[0005] The invention provides distiller's grains-based biochar for adsorbing multi-component organic pollutants and a preparation method thereof, which can be applied to the removal of organic pollutants discharged from coal combustion, garbage incineration, etc., and has solved the problem of low adsorption efficiency of conventional commercial activated carbon, high cost problem

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

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Embodiment Construction

[0040] Specific embodiments of the present invention will be described below.

[0041] The preparation method of distiller's grains-based biochar for adsorbing multi-component organic pollutants in this embodiment uses waste industrial distiller's grains and desulfurization wastewater from coal-fired power plants as raw materials, such as Figure 5 shown, including the following processes:

[0042] Step 1. Preparation of raw materials: pretreating waste industrial distiller's grains to obtain dry distiller's grains with a certain mesh;

[0043] Step 2. Preliminary activation treatment: mix distiller's grain raw materials with alkaline activator, dissolve in deionized water, and impregnate under stirring at room temperature; filter and dry the distiller's grains impregnated with alkaline activator to obtain distiller's grains loaded with activator ; Activate the distiller's grains loaded with the activator at high temperature under a nitrogen atmosphere, cool to room temperatu...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01J20/20B01D53/02
Inventor 杨林军马修卫
Owner SOUTHEAST UNIV
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