Is it necessary to regenerate spent activated carbon?

Do you know? Waste activated carbon was mainly treated by incineration and landfill, resulting in a great waste of resources.

Do you know? Activated carbon is divided into coal-based activated carbon, wood activated carbon, and shell activated carbon according to the raw materials for manufacturing. The normal production of activated carbon in the industry requires 3-5 tons of coal, 5-8 tons of wood, and 10-12 tons of bamboo. From the perspective of saving resources, through It is very necessary to regenerate waste activated carbon to reduce waste of resources;

Do you know? The manufacturing method of activated carbon is divided into physical method and chemical method. The physical method uses high-temperature natural gas, while the chemical method requires phosphoric acid. The prices of raw materials, natural gas and phosphoric acid remain high. It is very necessary to reduce costs through the regeneration of waste activated carbon;

Do you know? The physical method in the industry requires an average of 4 tons of standard coal per ton of activated carbon, and the regeneration of waste activated carbon requires only 0.4 tons of standard coal per ton of activated carbon, and the energy consumption is only 10% of the original; the carbon dioxide generated during the regeneration of waste activated carbon is only 25% of the original Reduce carbon dioxide emissions by 75%. Therefore, the regeneration of waste activated carbon is very necessary to reduce social energy consumption and achieve carbon neutrality at the peak of carbon.

Activated carbon is a functional carbon material with strong adsorption capacity. It has a special microcrystalline structure, developed pores, and a large specific surface area. It has dual characteristics of physical adsorption and chemical adsorption. It can selectively adsorb Various substances to achieve the purpose of decolorization and refining, disinfection and deodorization, decontamination and purification.

Activated carbon generally expresses its adsorption capacity for liquids, decolorization, and gases according to iodine value (mg/g), alan (ml/0.1g), and carbon tetrachloride CTC (%); activated carbon uses its powerful macropores and mesopores 1. The microporous pore structure adsorbs impurities, and as the adsorbed impurities increase, the pores will be saturated and cannot be adsorbed. But at this time, it does not mean that the pore structure is destroyed or completely destroyed. By recycling the waste carbon to the regeneration plant for processing, the adsorbed impurities are desorbed and the impurities are treated in an environmentally friendly manner. At the same time, the pore structure is restored through secondary activation, so as to have a new adsorption capacity. capacity, so activated carbon has regenerative value.