The invention discloses a preparation method of lightyellow
sophora root
lotion decoction dreg
charcoal for
antibiotic resistance gene reduction. The method comprises the following steps: (1) cleaning,
drying, crushing and sieving lightyellow
sophora root
lotion decoction dregs; (2) mixing the
medicine residue
powder with an activating agent according to a preset proportion, adding water into paste, and standing; (3) pre-carbonizing in a
nitrogen atmosphere, and then heating and carbonizing; (4) soaking the product in
hydrochloric acid, washing to be neutral and
drying; and (5) sieving after ball milling to obtain the
biochar with the specific surface area of 500-1000m / g. The
biochar obtained by the invention has the following advantages: (1) traditional raw materials are replaced by the
sophora flavescens residues, so that the problem of
waste disposal is solved; (2) optimizing a
carbonization and activation process, and preparing the
biochar with high specific surface area and multiple functional groups; (3)
antibiotic resistance genes are reduced, and efficiency insufficiency of traditional biochar is filled; and (4) the method adapts to agricultural
solid waste and
wastewater double scenes and promotes green upgrading of a
pollution treatment technology.