heating granular charcoal to 400 degrees c for 1 h and 600 degrees c for 3 h in n ( 2 ) increased ethanol adsorptivity and heating to 1000 degrees c ( 1 h ) in co ( 2 ) decreased it when ethanol was removed from dilute solutions by simple pass adsorption in a carbon packed column .
C0007955
charcoal
C0007009
carbon