Active carbon fiber adsorbent and preparation method and application of active carbon fiber adsorbent in benzene series adsorption

Abstract

The invention provides an active carbon fiber adsorbent preparation method, which belongs to the field of processing of a volatile organic compound. The method comprises the following steps: mixing aboron precursor, a water-soluble nitrogenous organic substance, an active auxiliary agent, a surfactant and water to obtain a mixed solution, wherein the active auxiliary agent is glucose, citric acidor ascorbic acid, and the boron precursor is m-aminophenylboronic acid, p-aminophenylboronic acid, m-cyanophenylboronic acid or p-cyanophenylboronic acid; and mixing the mixed solution and the activecarbon fiber and performing a hydro-thermal reaction to obtain the active carbon fiber adsorbent. The active carbon fiber adsorbent can generate a fluffy boron doped nitrogen carbide coating layer with a nano size, uniform distribution, high boron element content and taking an active B-N bond as a main form on the active carbon surface, content of boron and nitrogen elements of the surface of a carbon material can be greatly increased, the benzene series adsorption and desorption performance by the active carbon fiber adsorbent is increased, and the cycle adsorption performance of the activecarbon fiber adsorbent can be greatly improved.

Description

technical field

[0001] The invention relates to the technical field of volatile organic matter treatment, in particular to an activated carbon fiber adsorbent, a preparation method thereof and an application in the adsorption of benzene series. Background technique

[0002] Volatile organic compounds (VOCs), such as benzene series, hydrocarbons, aldehydes, ketones, ethers, amines, and alcohols, are common pollutants in the atmospheric environment. Common treatment methods for volatile organic waste gas include adsorption method, absorption method, catalytic combustion method, regenerative combustion method, etc. Among them, the adsorption method is one of the most widely used VOCs treatment technologies due to its advantages of simple operation, low one-time equipment investment and low energy consumption.

[0003] Activated carbon fiber (ACF) is a new type of carbonaceous adsorption material. Compared with traditional granular activated carbon (granular activated carbon), ...

Images