(407g) Adsorption Kinetics Studies of Catalytic HTL Derived Biochar

Ultra-porous carbonaceous powdered material derived from lignin rich biomass can be useful for water purification, energy storage, soil amendment, cement additive, wastewater treatment, gas purification etc.. In this study, we used corn stover agricultural residue as a cheaper feedstock and treated with hydrothermal liquefaction (HTL) at 250-300°C and 800-1600 psi to derive a solid residue, which was thermally and chemically post-treated to obtain mesoporous carbon. This carbon material was thoroughly characterized using the SEM/EDX, TEM and FTIR. Nitrogen adsorption isotherms such as Langmuir, Freundlich and Brunauer-Emmett-Teller (BET) were analyzed to determine the kinetic parameters. Barrett, Joyner, and Halenda (BJH) method was used to determine the pore-size distribution. Results obtained with specific surface area, pore size distribution, adsorption rate constant, monolayer/multilayer adsorption characteristics and mesoporosity will be presented.