SYNTHESIS OF Mg-Al HYDROTALCITE FOR ADSORPTION OF Pb2+ IN WATER
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Duc NM. SYNTHESIS OF Mg-Al HYDROTALCITE FOR ADSORPTION OF Pb2+ IN WATER. hueuni-jns [Internet]. 2018Apr.2 [cited 2024Mar.28];127(1A):15-22. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/4123

Abstract

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 solid obtained was characterized with XRD and BET. The synthesized hydrotalcite material owns a large surface area of 309.03 m2·g–1 and a mean capillary diameter of 11.57 nm. Hydrotalcite was utilesed an as adsorbent of Pb2+ in water. The absorption equilibrium was attained after 90 minutes at pH 5 with a maximum adsorption capacity of 144.93 mg·g–1. The synthesized adsorbent could be regenerated with a HNO3 (1 M) solution and used eight times with the capacity remained unchanged and reaches 92.11 % Pb2+ removal.

https://doi.org/10.26459/hueuni-jns.v127i1A.4123
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