journal of kerbala university

Adsorption of pigments using LDHs is a new effective approach to remove the contamination of aqueous liquids. A descriptive and quantity study was implemented for investigation of the LDHs ability in adsorption as an alternative method for eliminating the contamination from water. The ultraviolet spectroscopy technique was used to monitor the concentrations of the pigment in the aqueous liquid after mixing with specific weigh of LDHs. Different liquids of pigment was utilized to obtain the adsorption of isotherm. The langmuir and freundlich equations of adsorption isotherm were applied. Additionally, effect of the temperature and LDHs concentration were investigated. The best temperature was found to be 293 °C while the best concentration was 0.2 g. The influence of pH was also examined, showed the adsorption quantity depending on the alteration of the pH when it was 3 whereas it reduced after pH became 6.9. This study indicated clearly to high capacity of the LDHs compounds in elimination of the pigments.