Author : F.Al-Kiam, Ayad
journal of kerbala university,
2008, Volume 4, Issue 3, Pages 331-345
The removal of para anisidine (PA), with sepiolite clay have been performed investigating the effect of initial concentration, pH, temperature and contact time, on this process.
The equilibrium concentration have been determined spectophotometrically using ultra violet - visible technique.The equilibrium data are fitted to the Langmuir and Freundlich isotherm equations. The rate constant and activation energy value for the adsorption process was calculated, and the equilibrium time, that’s equal to 70 minutes.
The temperature thermodynamic parameters like , and have been calculated from the effect of temperature. Values of enthalpy showed that the adsorption process is exothermic.