✍ Scribed by K. László; A. Bóta; L.G. Nagyu
No coin nor oath required. For personal study only.
Chars and activated carbons obtained from miscellaneous waste materials and by-products have been used to remove phenol and 2,3,4-trichlorophenol from one-and two-solute aqueous solutions. The effect of activation on the adsorption performance was studied. Activation not only improved the specific surface area and the adsorption capacity of chars but also affected the polarity of the surface. The best results were achieved with carbons from agricultural by-products. From two-component solutions the preferred adsorption of 2,3,4-trichlorophenol was experienced. The effectiveness of the removal of the non-preferentially adsorbing phenol is poor as long as the preferred trichlorophenol is present above a certain concentration. The greater the difference in the K values, the higher is this concentration.
📜 SIMILAR VOLUMES
Pertechnetate ion (TcO,) adsorption from aqueous solutions is compared between activated carbons derived from different sources, by reference to the distribution coefficient Kd of Tc between adsorbent and solution. Adsorption runs made in systems containing HCI and HN03, with pH parametrically varie
## Abstract Activated carbons play an important role in the purification of air and of water. Whereas vapors are adsorbed by a micropore filling process, the removal of sparingly soluble species such as phenol and its derivatives is limited to the coating of the effective surface of the material. T