Removal of phosphorus by a composite metal oxide adsorbent derived from manganese ore tailings

► A new adsorbent of composite metal oxides (CMOMO) was synthesized from manganese ore tailings and used for phosphorus (P) removal. ► The kinetics data were best fitted by the Elovich model due to the high heterogeneity of the adsorbent. ► P adsorption by CMOMO was an endothermic process, with a satisfactory maximum adsorption capacity. ► This adsorbent showed specific adsorption capacity towards P, and P is adsorbed mainly by formation of inner-sphere surface complexes. ► P adsorption by CMOMO was reversible using alkali solution as an eluent.