Study on Phosphorus Adsorption Performance of Inorganic Modified Green Mudstone

Inorganic modified green mudstone (MGM) was prepared from the (GM) residue of Fushun West Open Pit Mine and characterized by XRF, XRD, FTIR, SEM GM MGM. According to calculation pore size BET equation, specific surface area MGM were larger. The results adsorption kinetics isothermal experiments showed that capacity for phosphate increased 0.1 mg/g 0.71 mg/g, which obviously better than GM. accorded with quasi-second-order kinetic model. data Freundlich model, Langmuir indicated model an process a double layer single layer. Thermodynamic increase in temperature beneficial internal diffusion due change structure after modification, number sites could provide increased, at same time, elements led extension chemical reaction time 700 min. Because ligand exchange electrostatic interaction between phosphate, GM, MGM, acidity alkalinity. To improve recycling ability hydrochloric acid concentration mol/L determined as best phosphorus resolving agent, rate still close 80% five cycles. be promising adsorbent removal phosphorus, providing new way resource utilization mining waste residue.