Authors : Dhritiman Das; Dr. Ashim Kumar Basumatary

Volume/Issue : Volume 9 - 2024, Issue 1 - January

Google Scholar : http://tinyurl.com/mvp9m5vz

Scribd : http://tinyurl.com/3cuw78fs

DOI : https://doi.org/10.5281/zenodo.10554379

Abstract : Biochar acts as a promising material in energy storage applications due to its porous structures. In this study, Coconut shells (CS) and Assam lemon peel (ALP) are studied and optimized based on the required properties for electrochemical energy storage systems. The biomass are collected and the fine powder is prepared using powder mettalurgy route. Then the raw biomass was converted to biochar by slow pyrolysis using a fixed bed reactor in different parameters to find the best optimum biochar for further experimental process designed for energy storage systems. The best-optimized biochar obtained is the lemon peel biochar at 500 0C with heating rate of 15 0C (ALPB500/15). The maximum solid char yield attained for both the coconut shell and Assam lemon peel biochar is 46% and 27% respectively at 500 0C at 15 0C/min. According to Brunauer-Emmett-Teller (BET) analysis the pore volume, pore size and surface area acquired for the Assam lemon peel biochar (ALPB) sample increases with an augment in pyrolytic temperature whereas in coconut shell biochar (CSB) the BET surface area shows no significant rise. Thus, the best optimized sample according to BET analysis is found to be LPB500/15. Thermo Gravimetric analysis (TGA) displays that the obtained sample is thermally stable with LPB500/15 showing type II isotherm and H3 hysteresis.

Keywords : Coconut Shell Biochar, Assam Lemon Peel Biochar, Pyrolysis, Pore Size Distribution, Optimization.