Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8092696 | Journal of Cleaner Production | 2018 | 36 Pages |
Abstract
This study analyses the removal of phenol and cadmium ion (Cd2+) using activated carbon obtained from peanut shells. No previous studies have reported the use of this adsorbent material on the binary removal of these contaminants. The results obtained after carrying out the characterisation indicated that the carbonaceous material was mesoporous, predominantly amorphous, with the presence of surface hydroxyl, carboxyl and carbonyl groups. The kinetic evolution was rapid for the first few minutes and equilibrium was attained within 180â¯min. It was observed that the best model to fit the experimental data was the pseudo-second-order model. With regard to the monocomponent equilibrium data, the Langmuir-Freundlich model had the best adjustment, obtaining maximum adsorption capacity of 21.00â¯Â±â¯2.11â¯mgâ¯gâ1 and 55.43â¯Â±â¯6.82â¯mgâ¯gâ1 of phenol and Cd2+, respectively. The binary component, meanwhile, behaved in a constant manner between the adsorption quantity and the adsorbate and adjusted well to the experimental data with the modified Langmuir model. According to these results, the activated carbon analysed was considered a good adsorbent for the removal of phenol and Cd2+, as it is derived from a renewable residue, thus contributing to more environmentally friendly processes.
Related Topics
Physical Sciences and Engineering
Energy
Renewable Energy, Sustainability and the Environment
Authors
BrÃgida Maria Villar da Gama, Graziele Elisandra do Nascimento, Deivson Cesar Silva Sales, Joan Manuel RodrÃguez-DÃaz, Celmy Maria Bezerra de Menezes Barbosa, Marta Maria Menezes Bezerra Duarte,