Synthesis and characterization of mango-stone based activated carbon at different thermal conditions and its Potential for the adsorption of methane gas

This research work is based on the importance of mango stone raw materials that could be useful for the synthesis of activated carbon and for the adsorption or storage of gases. For this purpose, activated carbon was prepared at different temperatures; such as 650, 750, 850 and 950. On increasing temperature porosity of mango stone surface was found to be increased. Characterization study gave the information about the change in structure and chemical composition of mango stone after treating it at different temperatures. Different analytical techniques were used for the characterization such as, FTIR, FT-Raman, TGA, XRD, SEM and BET surface area analysis. Adsorption analysis for Methane gas was performed at different temperatures; 35-5 ^oC and at pressure range of 0.8-6 bar. From results it was observed that on increasing temperature adsorption phenomenon decrease, it’s due to exothermic nature of adsorption reaction. Langmuir isothermal model was applied on data to determine the adsorption mechanism. Mango stone based activated carbon found as a good adsorbent for the storage of methane as compared to other adsorbents.

Asma is a visiting research student from the University of Agriculture, Pakistan. She has been at QAEHS for six months.