Mechanistic study of atenolol, acebutolol and carbamazepine adsorption on waste biomass derived activated carbon

Publication date: September 2017 Source:Journal of Molecular Liquids, Volume 241 Author(s): Ming-Ho To, Pejman Hadi, Chi-Wai Hui, Carol Sze Ki Lin, Gordon McKay Palm kernel shell (PKS) was physically activated by carbon dioxide at 900°C for 1.5h and tested for its ability to remove Atenolol (ATE), Acebutolol (ACE) and Carbamazepine (CBM), which are pharmaceutically active compounds (PhACs). Rapid adsorption of PhACs took place in the first 90min and reached equilibrium after 4h. The kinetic data were best fitted by the Ritchie-second-order model and confirmed by the diffusion-chemisorption model implying a predominantly chemisorption mechanism. The isotherm adsorption studies showed that the maximum adsorption capacities of ATE, ACE and CBM were 0.69, 0.67 and 0.72mmol/g respectively. The best fit isotherm was the Sips equation.
Source: Journal of Molecular Liquids - Category: Molecular Biology Source Type: research