摘要：The efficacy of low cost adsorbing materials for removal of 2,4-D (2,4 dichloro phenoxy acetic acid) and atrazine (2-chloro-4-ethyamino-6-isopropylamino-1,3,5 triazine) herbicides from drinking water was evaluated. Five low cost adsorbents, viz. wood charcoal, rubber granules, bottom ash, macro fungi sajor caju and florida were tested. The above materials were selected from organic, inorganic and biological sources. For the selection of the suitable adsorbent for 2,4-D and atrazine uptake, the maximum adsorption capacity (Qmax) was chosen as the main parameter. Using linearized forms of equilibrium models like Langmuir, Brunauer, Emmett and Teller (BET), Freundlich and Lopez-Gonzalez models (L-G models), the maximum adsorptive capacities were determined. Wood charcoal showed the best adsorptive capacity with Qmax of 0.70 mg g-1 for 2,4-D and 0.80 mg g-1 for atrazine followed by 0.40 mg g-1 for 2,4-D and 0.47 mg g-1 for atrazine by rubber granules. Bottom ash, sajor caju and florida gave poor performance.
