Adsorption of antipyrine by activated carbons from FeCl3-activation of Tara gum

Activated carbons were synthesized by FeCl3-activation of Tara gum at different temperatures (400–1000 °C). The activating agent and the precursor were physically mixed at different ratios (r = FeCl3:precursor, 0.5–3.0 wt). At r = 2 and 800 °C the most developed porosity was achieved, with a BET surface area of 1680 m2·g−1 and a pore volume near 1 cm3·g−1, corresponding mostly to micropores (≈75%). The carbons were fully characterized and tested...