TABLE 1.

Physical and chemical properties of granular activated carbons used in this study

PropertyRsRuCoA
DescriptionWood based, sievedWood based, unsievedCoconut shellWood based, acid treated
Specific surface area (m2/g)1,7451,7451,4801,309
Particle density (g/cm3)0.560.560.720.59
Bed porosity0.59 ± 0.030.54 ± 0.010.54 ± 0.030.63 ± 0.03
Total pore vol (ml/g)1.311.310.921.21
Vol of meso- and macropores (ml/g)0.610.610.310.67
Point of zero charge (pH)8.88.89.85
Isoelectric point (pH)3.53.53.83.3