Properties and Characterization of HDTMA–Cl Modified Jordanian Kaolinite and Its Use in Removal of Aniline from Aqueous Solution

Dr.Salem M.Musleh

Volume : III, Issue : X, October - 2014

Properties and Characterization of HDTMA–Cl Modified Jordanian Kaolinite and Its Use in Removal of Aniline from Aqueous Solution

Dr. Salem M. Musleh

Abstract :

Cretaceous Jordanian kaolinite from Batn Al–Ghul was modified by cationic surfactant hexadecyltrimethylammomium chloride( HDTMA–Cl). The raw and the resultant organo clay samples were characterized using Total Organic Carbon (TOC), Fourier Transformed (FTIR), X–ray Fluorescence (XRF), X–ray Diffraction (XRD), Thermogravimetry(TG/DTA) and UV/ VIS Spectrometry. The FTIR spectra reveal viation frequencies shift in bands at 2816 and 2820 cm–1 for original kaolinite to 2849 and 2870 cm–1 for organo kaolinite. The XRF results show change in the chemical composition between the raw and the modified sample mainly in loss on ignition, which increase to 21.25% in the organo kaolinite due to the loading of the surfactant. XRD results shows contraction in d(001) from 7.01807A� to 6.9795A� indicate change in the interlayer spacing due to the adsorption of HDTMA–Cl on the external of the surface of kaolinite. The DTA shows peaks at 374 C� indicate intercalation of surfactant on the kaolinite, and at 840 C� is the formation of amorphous SiO2 .The raw and modified kaolinite was investigated to check their ability in removing aniline from aqueous solution. It found that surfactant modified kaolinite increase adsorption of aniline by 11.5% more than the raw kaolinite in the range of 30 –150 ppm concentrations.