Method for preparing Chinese soapberry activated carbon by using phosphorus-containing inorganic acid as activator

Abstract

The invention relates to a method for preparing Chinese soapberry activated carbon by using phosphorus-containing inorganic acid as an activator. The preparation method comprises the following steps: 1) drying Chinese soapberry kernels / shells and peel residues in air, pulverizing, washing with an alcoholic solution, and filtering for later use; 2) putting the raw material in a microwave reactor, introducing N2, regulating microwave power and carbonization temperature, and keeping the temperature for carbonization to obtain a carbonization material; 3) mixing the carbonization material with a phosphorus-containing inorganic acid composite activator, adding distilled water, drying after 2 hours, quickly adding into furnace temperature in a N2 protective atmosphere to be activated, cooling and taking out; and 4) washing the obtained activated carbon with hydrochloric acid, washing with water to a neutral state, and drying to obtain the powdery activated carbon finished product. The specific area of the Chinese soapberry activated carbon is 1000-2000 m<2> / g, and the BJH mesopore is 500-800 m<2> / g. The Chinese soapberry activated carbon has the advantages of developed mesopore, reasonable pore structure distribution, moderate apparent density, uniform particle density, stable performance and high adsorption capacity.

Description

technical field [0001] The invention belongs to the technical field of forest product chemical industry, and in particular relates to a method for preparing sapindus activated carbon by using phosphorus-containing inorganic acid as an activator. Background technique [0002] my country is a large agricultural country, which produces a large amount of agricultural and forestry wastes every year, such as crop straws, agricultural and forestry processing wastes, human and animal manure, etc. At present, my country's agricultural and forestry waste treatment methods mainly use two aspects: one is to incinerate, but a large amount of dust and CO produced after incineration 2 Second, composting requires a large amount of land, and incomplete decomposition of organic matter will produce a large amount of odorous substances such as low-level fatty acids and sulfur-containing compounds, which will affect the surrounding environment. How to effectively utilize agricultural and forest...

AI Technical Summary

Problems solved by technology

[0005] As a kind of energy tree species, Sapinberry has been planted on a large scale across the country. After extracting biodiesel raw material oil from Sapinberry fruit, a large amount of residue is left. Sapinberry residue is rich in carbon sources and is an important raw material for activated carbon. Source, at present, there is no report on the preparation of sapindus activated carbon with the fruit of sapindus as raw material and the inorganic acid containing phosphorus as the activator