Study on the Preparation of a Sol-Gel Sorbent Based Thiosemicarbazone for Selective Removal of Heavy Metal Ions
نویسندگان
چکیده
Sorbent material based on a novel thiosemicarbazone compound, C H N S, was prepared by 12 18 4 immobilizing the ligand into gel matrix (SG). The SG sorbent was characterized by FT-IR, EDX, SEM, TEM and TGA. The competitive sorption characteristics of eight transition metal ions (Ag , Cu , Co , Ni , Fe , Pb , Zn + 2+ 2+ + 3+ 2+ 2+ and Mn ) using batch method was studied using atomic absorption spectroscopy (AAS). The extraction of 2+ metals was optimized for key parameters such as pH, contact time, metal ions concentration and SG particle size. The results show that the sorbent material has a special selectivity and high adsorption capacity for Ag . + The sorbent can repeatedly used more than three times as there was no significance deterioration in the metal uptake (%E > 90%).
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