Open AccessSynthesis of Zinc-Aluminum Layered Double Hydroxides and Application of Adsorption for Nitrate from Water
Author(s) -
Hamida Edan Salman,
Nahlah Jaber Hussein
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/571/1/012070
Subject(s) - adsorption , layered double hydroxides , hydroxide , zinc nitrate , endothermic process , chemistry , zinc , inorganic chemistry , fourier transform infrared spectroscopy , zinc hydroxide , aluminium , nitrate , kinetics , nuclear chemistry , chemical engineering , organic chemistry , engineering , physics , quantum mechanics
Zinc-aluminum Layered double hydroxide was synthesized by copercipitation method in molar ratio Zn/Al 3:1.The prepared layered double hydroxide were characterized by Fourer-transform infrared spectra (FTIR), X-ray diffraction (XRD)and Atomic force microscope (AFM).The synthesized layered double hydroxides were used to study the adsorption of nitrate anion (NO 3 − ) from water The influence of some parameters on nitrate adsorption, including PH, temperature and adsorption of kinetics. The results showed that the adsorption of nitrate anion (NO 3 − ) on the surface of the layers (Zn/Al-LDH) increases by increasing the temperature but decreases by increasing the pH and the adsorption of isotherm is following the frindlch equation. The adsorption of kinetics were subjected to modified first grad false the lagergren equation. The thermodynamic parameters, such as (ΔH ad , ΔG ad ΔS ad ) clarified that the adsorption on the Zn/Al-LDH is endothermic and spontaneous.