-The separation of p-xylene and m-xylene from C8 aromatic hydrocarbon feed using Y zeolites is investigated. Effect of residual moisture on p-xylene adsorption on BaY was measured in order to optimize the activation temperature of the adsorbent. The results show that with an increase in temperature the moisture on the adsorbent decreases. An optimum loading of moisture is required for adsorption of xylene on the adsorbents. The Everett equation is used to determine the adsorption capacity and selectivity. It has been found that the adsorbents best suited for the separation of p-xylene, m-xylene, o-xylene and ethyl benzene from the mixture of C8 aromatics are NaY, NaY, BaY and KY, respectively. The XRD results show that the crystallinity of the adsorbent decreases upon exchanging the zeolites to K + and Ba 2+ ions.

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To investigate the adsorption behavior of blend activated charcoal and used battery cell carbon for removal of cadmium metal ion, batch adsorption study was used. Batch study for the expansion of parameters such as pH, initial metal ion concentration and adsorbent quantity were utilized. The characterization of the adsorbent samples was done by technique Fourier Infra Red Spectrum (FTIR) and Scanning Electron Microscope (SEM). Adsorption data were computed by Langmuir and Freundlich isotherms. Kinetic data was well explained by Pseudo second order equation, Intra-particle diffusion and Elovich first order equation. Maximum adsorption efficiency was observed to be 75% at 50:50 ratios of activated charcoal and used battery cell carbon. Purpose of blending activated charcoal and used battery cell carbon reduce the consumption of activated charcoal as it is very costly to use for commercial purposes.