The invention discloses preparation of a
biochar-based catalyst and a method for repairing
antibiotics by using the
biochar-based catalyst. According to the preparation of the
biochar-based catalyst and the method for repairing
antibiotics by using the biochar-based catalyst, firstly, pretreated
pyrite acidic mine
wastewater is taken as a modifier of
agricultural waste pomelo peel biochar; then, iron,
copper and aluminum ions on the biochar form a high-activity biochar-based zero-valent iron,
copper and aluminum ternary
metal composite catalyst material under the reduction action of a pomelo peel extracting solution; a novel
Fenton oxidation technical
system is constructed by the high-activity biochar-based zero-valent iron,
copper and aluminum ternary
metal composite catalyst material andpersulfate; the novel
Fenton oxidation technical
system is used for single, synchronous and efficient degradation and removal of water
antibiotics tetracycline and
norfloxacin, within the reaction time of 60 min, the single removal rates of
tetracycline and
norfloxacin are as high as 98.85% and 96.52% respectively; and during synchronous removal, the removal rate can also reach 80% or above. In addition, the high-activity biochar-based Fenton catalyst has good stability. According to the method disclosed by the invention, the treatment and recycling of acid mine
wastewater and
agricultural waste pomelo peel are realized, and the single and synchronous degradation and removal of various antibiotics are also realized.