Recycle of Heavy Metal Chemical Reagents: A Case Study of "Preparation and Analyses of Complex[Co(NH3)6]Cl3"
Xiaocong TIAN,Changsheng LU,Fengbin WANG,Bin LIU,Haifeng MA,Qing WANG.Recycle of Heavy Metal Chemical Reagents: A Case Study of "Preparation and Analyses of Complex[Co(NH3)6]Cl3"[J].University Chemistry,2019,34(9):101-105.
National Demonstration Center for Experimental Chemistry Education(Nanjing University), School of Chemistry & Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
Abstract:
A new experiment, Recycle of cobalt and silver, has been designed, based on the original experiment "Preparation and analyses of complexCo(NH3)6]Cl3". Both cobalt and silver are heavy metals, which can cause serious environmental pollution. In our experiments, cobalt chloride was recovered from the productCo(NH3)6]Cl3, and silver nitrate was extracted from the byproduct in the process of chlorine content determination. Therefore, both the above-mentioned heavy metals can be recycled. Our experimental design has been proved to be able to promote studying interests of students, enhance environmental awareness of students, and in the meantime reduce experimental costs.
