Table 2: Langmuir and Freundlich isotherm constants for adsorption of Sb(III) ions on grey and red Erzurum clay.

TemperatureLangmuir isotherm constantsFreundlich isotherm constants
(mg g−1)

25°C9.1571.40.999628.089.230.9555
40°C8.5833.30.998820.089.000.8831