چكيده به لاتين
The importance of adsorption and growing demand for efficient and low-cost treatment methods have given rise attraction to low-cost biosorbents. In this study, batch operation were applied for the removal of metronidazole by grass and modified papital (by Hcl) from aqueous solutionIn. Characterization of grass and modified papital has been accomplished by SEM, BET, and FTIR analyses. The effects of sorption parameters such as contact time, solution pH, adsorbent dosage, initial dye concentration were evaluated in the batch system. The experimental data were fitted by three isotherm models (Langmuir, Freundlich and Temkin adsorption models), and the results showed that the adsorption isotherm data were fitted well to the Langmuir for both adsorbent and the measured maximum adsorption capacities calculated according to the Langmuir isotherm were 32 mg/g for grass and 30 mg/g , for modified papital. In each of the cases, the adsorption kinetic data for adsorbents were better described by the pseudo-second order kin etic model. Result showed that grass has more removal efficiency than modified papital .
Keywords: Metronidazole , Grass , Papital , WasteWater , Aadsorption.
