Normal 0 false false false MicrosoftInternetExplorer4 Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} In the present investigation, the adsorption of Cr (VI) was studied by making use of batch-technique. Percentage adsorption was calculated for RHA-Chromium solution system as a function of i) contact time, ii) pH, iii) adsorbate concentration and iv) temperature. Adsorption is interpreted in terms of Freundlich and Langmuir equations. The value of ΔH0 was found to be-16.4708 KJ/mole. The desorption studies especially with 0.1M CaCl2 and 10 % HCl at given Chromium loadings on RHA give significant percent desorption of Cr (VI).

Uzma Zafar ,