A Review on Multimedia Communications Cryptography
Yasser Salem, Mohamed Abomhara, Othman Omran Khalifa, Aws Alaa Zaidan, Bilal Bahaa Zaidan · Research Journal of Information Technology · 2011
Aqueous-phase edsorption equilibrium and kinetic mechanism of phenol, 3-chlorophenol rnd o-cresol onto Norit Granular Activaied Caibon (NAC 1240) were studied in a batch system at temperature of 30 oC, agitation speed of 120 rpm, initial phenol concentrations of 25-200 mg/t.The elfects of initid phenol concentration and time of adsorption on phenol adsorption process were lnvestigated.The adsorption equilibrium data were reasonably fitted to iangmuir and Freundlich isotherm models over the entire range of initial concentrations used.The order of adsJrption capacity among the phenolic compounds was o-cresol > 3-chlorophenol > phenol.Two simplified kinetic modeis, namely pseudo first-order equation end pseudo second-ordier equation, were selected to follow the adsorption processes.The adsorption of all adsorbates could be best described by the pseudo second-order equation.The kinetic parameters of this model were calculated and discussed.