Study on the degradation of accumulated bisphenol S and regeneration of magnetic sludge-derived biochar upon microwave irritation in the presence of hydrogen peroxide for application in integrated process.

•Magnetic sludge-derived biochar offer the feasibility of an integrated process.•Ethanol-water system decouples the adsorption and degradation.•·OH and h+ are the main active radicals involved in reactions.•Degradation and regeneration can be obtained in MW + H2O2 under certain conditions.