Open AccessIntercalation of oxalate ions in the interlayer space of a layered double hydroxide for nickel ions adsorption
Author(s) -
Giscard Doungmo,
Théophile Kamgaing,
Ranil Clément Tonleu Temgoua,
Ervice Ymélé,
Francis Merlin Melataguia Tchieno,
Ignas Kenfack Tonlé
Publication year - 2016
Publication title -
international journal of basic and applied sciences
Language(s) - English
Resource type - Journals
ISSN - 2227-5053
DOI - 10.14419/ijbas.v5i2.5672
Subject(s) - sorption , intercalation (chemistry) , nickel , adsorption , oxalate , aqueous solution , langmuir adsorption model , inorganic chemistry , fourier transform infrared spectroscopy , layered double hydroxides , hydroxide , materials science , ion , langmuir , chemistry , chemical engineering , organic chemistry , engineering , metallurgy
In this study, sorption properties of a synthesized anionic clay were enhanced by the intercalation of oxalate ions in its interlayer space. The pristine and modified clay materials were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and thermal analysis. These techniques confirmed the presence of oxalate ions in the interlayer space of the clay. The intercalated clay was then used as a matrix for the sorption in batch mode of nickel ions in aqueous solution. The influence of a number of parameters such as contact time, pH, initial concentration of the analyte and adsorbent dosage were studied. The maximum adsorption of nickel was obtained at pH 6, that is, about 90% Ni2+ removal. The adsorbent/adsorbate equilibrium follows a pseudo-second order kinetics and best matches the Langmuir model. The modified clay was shown to be efficient matrix for the sorption of nickel ions.