| dc.description.abstract | Baggasse derived biochar magnetically modified with iron (α-Fe2O3-CBG) was fabricated,
characterized and applied as a low-cost adsorbent for the removal of carbamazepine (CBZ), a
pharmaceutically active compound which has been reported as an emergent water contaminant.
Characterization of the synthesized (α-Fe2O3-CBG) composite showed that iron was effectively
impregnated onto the carbonized bagasse network. The composite was able to achieve 60.9 % CBZ
removal within a period of 4 hours. The time-dependency adsorption data followed the pseudosecond
order kinetic law while the intraparticle diffusion model indicated that pore diffusion is not the sole operative rate-determining mechanism with significant boundary layer effects. Freundlich model
best explained the equilibrium sorption data. The adsorption extent was also strongly pH-dependent
though adsorption mechanism is significantly driven by electrostatic interactions at lower pH.
Furthermore, magnetic separation of the contaminant-laden adsorbent was successfully
accomplished. | en_US |
