h i g h l i g h t s
" Hydrothermally carbonized biomass
were used to produce activated
carbons.
" Physical activation with CO2 were
compared with chemical activation
with H3PO4.
" The activated carbons had small
pores and displayed a high capacity
to adsorb CO2.
" The activated carbons adsorbed CO2
rapidly and had excellent cyclability.
" A chemically activated carbon
showed a high CO2-over-N2
selectivity.