$CO_2$ capture analysis of tobacco biochar- $AlCl_3$ composite

Abstract

In this study, the performance of tobacco biochar-$AlCl_3$ composite for $CO_2$ capture was investigated. Biochar- $AlCl_3$composites were prepared at different blend ratios (10:0.4; 10:2; 10:4, wt./wt.) and used for $CO_2$ capture experimentsto determine the optimal Al metal content at which $CO_2$ adsorption was highest. Biochar composites were producedthrough slow pyrolysis under inert nitrogen atmosphere in a fixed bed reactor at 600oC for 3h. Properties of biocharmetal composites and raw biochar samples were characterized with SEM-EDS, XRD and FTIR analysis. $CO_2$experiments were conducted in TGA under $N_2$atmosphere with a flow rate of 50 ml/min at 25°C. The maximum $CO_2$adsorption was observed as 59.97 mg $g^{-1$} for biochar: $AlCl_3$ composite at a ratio of 10:2. Finally, results of studyshowed that biochar-$AlCl_3$ composites have great potential as a $CO_2$ capture material due to its low-cost, sustainabilityand $CO_2$ capture capacity