The simultaneous removal of cadmium (II) and lead (II) from wastewater with the application of green synthesized magnesium silicate hydrate

To the purpose of solving problems coal-gangue accumulation in mine and pollution cadmium (II) lead wastewater, magnesium silicate hydrate (M-S-H) was synthesized from by thermochemical. M-S-H had removed Cd(II) Pb(II) adsorption. The characterization adsorption effects factors, including initial solution pH, metal concentration, adsorbent dose, temperature, reaction time, coexisting ions were explored for performance. pH precisely controlled a meter. temperature thermostatic gas bath oscillator with an error ±0.3. These results this study revealed that surface area increased 8.12 to 26.15 m 2 /g pore volume 0.12 cm 3 /g. maximum adsorptions 59.52 83.33 mg g −1 , respectively. performance reached saturation at 5, 25°C, 6 g/L, time 90 min, concentration 300 mg/L. spontaneous endothermic well fitted pseudo-second-order kinetic Langmuir isotherm models. mechanisms electrostatic interaction, ion exchange, complexation. This research indicated coal gangue efficiently eliminated water, opening up new possibilities reuse.