الفهرس 
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Abstract
The undertaken study aims to investigate the performance of powdered activated carbon (PAC) prepared from Casuarina charcoal brought from kilns products charcoal at kafer Saad, Damietta Governorate for the removal of Methylene Blue. Casuarina charcoal was grinded to be in powder form with the use of a glass paper. PAC was prepared by activation through roasting at high temperature (850 °C) for 3hrs and activation of charcoal with strong (HCl) acid for 2- 3 hours. The activated carbon was characterized by (FTIR) Fourier Transform Infrared Spectroscopy analysis. Also the activated carbon was analyzed by (SEM) Scanning Electron Microscope. The prepared PAC was used for the removal of methylene blue with different initial concentrations and under different conditions of pH (4-10) and different PAC doses (0.2 – 0.8 gm/ lit) and at a temperature of 25 °C. The MB concentration in the liquid solution was determined spectrophotometrically at wavelength 660 nm using spectrophotometer UV-Visible. The result showed that PAC was efficient for the removal of Methylene Blue at 25 °C. The adsorption of MB was affected with pH change and the optimum pH for the removal process of MB was with appropriate removal efficiency at pH 6. The adsorption fractions for all MB concentrations began to increase rapidly through a time interval of 4 minutes from initial time and approached to the equilibrium time at about 12 minutes. The experimental results were fitted to kinetic models of pseudo 2nd order. Freundlich and Langmuir isotherms were applied to describe the equilibrium relationship at different conditions.