When used as the same weight per volume ratio, FAC having bulk density of 0.77 ± 0.02g/cm3 as against 0.66 ± 0.05 g/cm3 for CAC will be able to filter more liquor volume before available cake space is filled.
Generally, carbons with bulk density of about 0.5g/cm3 are adequate for sugar decolouration7.