affiliation not provided to SSRN
heavy metals combined pollution, MnO2, iron oxides, Soil remediation
N-doped biochar, FTIR, Raman (ID/IG), Surface functionalities, Mn2+ redox cycle, Aniline adsorption
Nanoconfined structure, Halloysite nanotubes, Zirconium phosphate, Adsorption, Atomic force microscopy (AFM)