Department of chemical engineering,, Ayatollah Amol
chemical engineering, Sciences and researches Branch, Islamic Azad Unive
In this study, the adsorption of mercury ions by Sargassum bevanom (S. bevanom) by batch method was investigated. The optimum operating parameters such adsorbent dosage, contact time, and pH, were obtained as: a biomass dose of 0.4 g in 100 ml of mercury solution, contact time of 90 mins and pH 7, respectively. Three equations Morris –Weber, Lagergren and pseudo second order are tested to verify the kinetics of the adsorption process. The data are well explained by the model of Weber Morris. The Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich are subjected to sorption data to estimate sorption capacity that the Langmuir model indicated Better performance in the fitting of equilibrium data. Also, the thermodynamic parameters indicated that the adsorption process of mercury by S. bevanom is spontaneous and endothermic. Artificial Neural Networks (ANN) was used to predict the adsorption efficiency for the removal of mercury ions that the ANN model can estimate the behavior of mercury removal process.