A kind of activated carbon with high performance edible fungus residue and preparation method thereof

Abstract

The invention provides a high-performance preparation method of edible fungus residue activated carbon, which comprises the following steps: (1) drying and pulverizing the edible fungus residue; (2) combining the steps ( 1) The resultant is mixed evenly in 25-30g / 100ml aqueous activator solution, soaked at 30-40°C for not less than 20 hours, after filtering, dry the filter cake, and activate at 750°C under nitrogen atmosphere 4.5 hours; (3) cooling to room temperature, pickling, then washing to neutrality, and drying to obtain; the activator is composed of sodium hydroxide, potassium hydroxide and potassium carbonate in a weight ratio of 2:1:5 composition. The activated carbon obtained by the present invention has a very excellent adsorption effect for methylene blue and heavy metal copper. For methylene blue, the adsorption performance can reach 600mg / g, the adsorption effect for heavy metal copper can reach 222mg / g, and the iodine adsorption value can reach 2300mg / g. g.

Description

technical field [0001] The invention belongs to the field of activated carbon preparation, and in particular relates to a high-performance edible fungus residue activated carbon and a preparation method thereof. Background technique [0002] Edible fungus is one of people's favorite foods. In recent years, as its nutritional value has attracted more and more attention, its breeding scale has also continued to expand, and with it, the problem of disposal of waste fungus residues produced by its processing has become increasingly prominent . [0003] In the agricultural product processing industrial park, the treatment of heavy metals and dyes is also one of the key tasks, but the cost of using commercially available treatment products (such as commercially available activated carbon) is relatively high, and it is not suitable for large-scale promotion and application. [0004] For the treatment of pollutant discharge in industrial parks, in order to minimize the cost, it is ...

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Problems solved by technology

[0006] However, there is still very little research in the field of preparing activated carbon from edible fungus residues. There is still a lack of feasible research ideas on how to optimize the preparation process of this type of activated carbon according to the characteristics of edible fungi residues.

"Sawdust Type Lentinus Mushroom Slag Activated Carbon and Its Preparation Method" has carried out a certain discussion in this regard, but the adsorption capacity of the activated carbon obtained is not satisfactory, and the adsorption capacity for methylene blue is less than 200mg / g

However, the adsorption effect of the activated carbon obtained by the two methods on methylene blue is still less than 200mg / g

[0007] In summary, the prior art has not yet found a preparation method for the preparation of high-performance edible fungus residue activated carbon, making it difficult for the obtained activated carbon to replace commercial activated carbon and cannot be put into practical applications.

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