Chen X.,Guang Xi normal University |
Cui T.-S.,Guang Xi normal University |
Zhao S.,Guang Xi normal University |
Deng X.-J.,Guang Xi normal University
Materials Science Forum | Year: 2016
In this study, we studied the ability of modified Stilbite to adsorb heavy metals Pb2+, Cu2+, and Cd2+ from wastewater. In static conditions, we investigated the impact of pH, temperature, dosage, and the competitive adsorption characteristics of the modified Stilbite in addressing pollution of wastewater with Pb2+, Cu2+, Cd2+. The testing showed that: under normal circumstances, with a pH between 5-6, a dosage of 0.7 g, and an adsorption time of 90 minutes, the adsorption rate of the three metals was above 90%. The adsorption rate of Cu was greater than Pb, which was greater than Cd. The modified Stilbite adsorption of the three metals met Langmuir and Freundlich isothermal adsorption equations. The study also revealed that regenerated Stilbite, after adsorption, can still continue to be used for adsorption of heavy metals. © 2016 Trans Tech Publications, Switzerland.