Surface Area (m²/g)

Impregnated GAC (HCl)

Impregnated GAC (HNO3)

Impregnated GAC (HNO3+HCl)

BET Surface Area

423.62

435.13

431.69

Langmuir Surface Area

573.14

589.32

578.87

BJH* adsorption cumulative surface area of pores between 17.000 Å and 3000.000 Å diameter

204.03

211.45

209.31

BJH desorption cumulative surface area of pores

276.43

262.84

269.72

Pore Volume (cm³/g)

Single point adsorption total pore volume of pores

0.541

0.499

0.516

Single point desorption total pore volume of pores

0.557

0.509

0.557

BJH adsorption cumulative surface area of pores

0.468

0.428

0.442

BJH desorption cumulative surface area of pores

0.501

0.458

0.476

Pore Size ( Å)

Adsorption average pore width (4V/A by BET):

51.08 Å

44.26 Å

48.44 Å

Desorption average pore width (4V/A by BET):

52.61 Å

43.82 Å

47.99 Å

BJH adsorption average pore diameter (4V/A):

91.81 Å

84.21 Å

87.78 Å

BJH desorption average pore diameter (4V/A):

72.55 Å

66.12 Å

68.45 Å