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Table 3 Cation exchange capacity (CEC), specific surface area (SSA), viscosity and trace element content of raw and purified samples

From: Characterization and purification of Algerian natural bentonite for pharmaceutical and cosmetic applications

Sample

CEC (meq/100 g)

SSA (m2/g)

Pb (ppm)

As (ppm)

Apparent viscosity(cP)

Plastic viscosity (cP)

RBN

61.76

474.64

< 0.04

 < 0.01

11

7

RBN-1

88.20

677.71

< 0.04

< 0.01

36

15.5