Preparation method of agricultural and forestry waste porous carbon-based composite adsorption material

Abstract

The invention discloses a preparation method of an agricultural and forestry waste porous carbon-based composite adsorption material, and relates to the technical field of agricultural and forestry waste treatment and arsenic-containing wastewater treatment. The preparation method comprises the following steps: dissolving copper salt, magnesium salt and silver salt in water, adding a proper amountof dilute nitric acid, uniformly mixing, adding agricultural and forestry waste porous carbon, uniformly mixing, and reacting through an ultrasonic microwave combined reactor to prepare the agricultural and forestry waste porous carbon-based composite adsorption material. The agricultural and forestry waste porous carbon is used as a main carrier substance, CuO-MgO-Ag2O with a certain content andcomposition is used as a filler of an adsorption material, the prepared C-CuO-MgO-Ag2O (7: 2: 1: 1) modified agricultural and forestry waste porous carbon has the best adsorption effect, and the adsorption capacity reaches 282 mg / g. It is proved that the agricultural and forestry waste porous carbon-based composite adsorption material C-CuO-MgO-Ag2O can be used for arsenic-containing industrial domestic sewage and wastewater environment treatment.

Description

technical field [0001] The invention relates to the technical field of agricultural and forestry waste treatment and arsenic-containing wastewater treatment, in particular to a preparation method of a porous carbon-based composite adsorption material for agricultural and forestry waste. Background technique [0002] Arsenic pollution refers to environmental pollution caused by arsenic or its compounds. The mining and smelting of arsenic and arsenic-containing metals, the production of glass, pigments, technical materials, and paper using arsenic or arsenic compounds as raw materials, and the burning of coal can all produce arsenic-containing waste water, waste gas and waste residue, which will pollute the environment . In addition to natural causes such as rock weathering and volcanic eruptions, atmospheric arsenic pollution mainly comes from industrial production, the use of arsenic-containing pesticides, and coal combustion. Wastewater containing arsenic, pesticides and ...

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Problems solved by technology

Metals in the catalytic activation method are easy to enter and stay inside the activated carbon, and the organogel carbonization method is expensive and the preparation process is cumbersome, and the precursor of the organoaerogel uses toxic organic substances such as phenols and aldehydes, which are harmful to the staff and the environment. the danger of

The template synthesis process of the traditional template method is cumbersome and expensive, which limits its large-scale application in industrial production.

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