Open AccessSYNTHESIS Mg-Al HYDROTALCITE FOR ADSORPTION OF Pb2+ IN WATER
Author(s) -
Ngô Minh Đức
Publication year - 2018
Publication title -
tạp chí khoa học đại học huế: khoa học tự nhiên/tạp chí khoa học đại học huế: khoa học tự nhiên (online)
Language(s) - English
Resource type - Journals
eISSN - 2615-9678
pISSN - 1859-1388
DOI - 10.26459/hueuni-jns.v127i1a.4123
Subject(s) - hydrotalcite , adsorption , calcination , nuclear chemistry , metal ions in aqueous solution , chemistry , precipitation , metal , coprecipitation , molar ratio , inorganic chemistry , materials science , catalysis , organic chemistry , physics , meteorology
Hydrotalcite was synthesized using the co-precipitation method with the Mg/Al molar ratio of 3.0 and then calcined at 450 °C, for 5 h. The obtained solid was characterized by XRD, BET. As seen from results of physical characterization, the synthesized Hydrotalcite material owns large surface area of 309.3 m 2 /g, mean capillary diameter of 11.52 nm. Hydrotalcite application as adsorbent of heavy metal ions. The results of adsorption experiment for Pb 2+ in water showed that the absorption equilibrium was attained after 90 minutes at pH = 5 with maximum adsorption loading capacity of 144.93 mg/g. The synthesized adsorbent could be regenerated with HNO 3 (1M) solution