Preparation of spherical flower-like Mg(OH) from waste magnesite and its immobilization performance for Cu, Zn and Pb.

Spherical flower-like Mg(OH) was successfully synthesized under conditions of Mg concentration of 2 mol·L, molar ratio of Mg/NHOH of 1:0.5, temperature of 120 °C and time of 1 h using MgSO solution as raw material obtained from waste magnesite through several procedures. Spherical Mg(OH) exhibits flower-like structure composed of lamellar crystals.