Open AccessAdsorption Study for Trifluralin on Iraqi ? –Alumina
Author(s) -
Baghdad Science Journal
Publication year - 2012
Publication title -
mağallaẗ baġdād li-l-ʿulūm
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.167
H-Index - 6
eISSN - 2411-7986
pISSN - 2078-8665
DOI - 10.21123/bsj.9.1.153-159
Subject(s) - adsorption , freundlich equation , chemistry , trifluralin , aqueous solution , thermodynamics , enthalpy , sorption isotherm , kinetic energy , chromatography , physics , quantum mechanics , weed control , agronomy , biology
Equilibrium adsorption isotherm for the removal of trifluralin from aqueous solutions using ? –alumina clay has been studied. The result shows that the isotherms were S3 according Giels classification. The effects of various experimental parameters such as contact time, adsorbent dosage, effect of pH and temperature of trifluralin on the adsorption capacities have been investigated.The adsorption isotherms were obtained by obeying freundlich adsorption isotherm with (R2 = 0.91249-0.8149). The thermodynamic parameters have been calculated by using the adsorption process at five different temperature, the values of ?H, ?G and ?S were (_1.0625) kj. mol-1, (7.628 - 7.831) kj.mol-1 and (_2.7966 - _2.9162) kg. k-1. mol-1 respectively.The kinetic study of adsorption process has been studied depending on three kinetic equations:1- Allergen equation2- Morris –weber eguation3- Reichenberg eguation.In general, the result shows the isotherm were on ?- alumina according to Giels classification.? –alumina and thermodynamic