<span style="font-size:12.0pt;line-height: 115%;font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-IN;mso-fareast-language:EN-IN;mso-bidi-language:HI" lang="EN-IN">Phosphate adsorption studies using carbon prepared from stem bark of <i>Eucalyptus teriticornis</i> Smith</span>

Abstract

<span style="font-size:12.0pt;line-height: 115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:hi"="" lang="EN-IN">Removal of phosphate ions was studied using carbon prepared from stem bark of <i>Eucalyptus teriticornis</i> Smith (family Myrtaceae), from aqueous solution. Study was carried out in the batch technique as a function of contact time, phosphate concentration, temperature and <i>p</i>H of the solution. Equilibrium time for studied concentrations was not same. The sorption process follows reversible first order kinetics and fits Langmuir sorption isotherm. The forward rate constants increased with decrease in concentration. Maximum sorption was observed at lower temperature and higher <i>p</i>H. Nature of sorption was exothermic and this was supported by K_d values. Desorption study and effect of other ions are also studied.</span>