초록 |
Environmental contamination by toxic xenobiotic chemicals is a serious worldwide problem. These contaminants arise predominantly from agricultural and industrial sources. The widespread usage of pesticides has a potential negative impact on public health and the ecosystem. Some of the applied herbicides are continuously discharged into aquatic environments through the surface runoff, and such discharge can lead to contaminated aquatic environments which are hazardous to resident organisms. Among the numerous agrochemicals in use today, the herbicide 2,4,5-Trichlorophenoxy acetic acid (2,4,5-T), a member of the phenoxy herbicide group, has been widely applied to control broad leaf weeds. The main purpose of this work is to select a proper adsorbent for elimination of 2,4,5-T from its aqueous solution, and to study their adsorption and desorption characteristics experimentally as well as theoretically. |