Adsorption of mercury by sugi wood carbonized at 1000 degrees C

The ability of sugi wood carbonized at 1000 degreesC to adsorb mercury was examined using aqueous solutions of mercuric chloride. Parameters studied i nclude contact time, pH, adsorption temperature, and initial concentration of mercury in solution. Results showed that sugi wood carbonized at 1000 de greesC could effectively remove mercury from aqueous solutions. The carboni zed wood showed high adsorption ability for mercury at a wide pH range (pH 3-9), but its ability drastically decreased at pH 11. Adsorption decreased with increases in adsorption temperatures, indicating that the precesses we re exothermic in nature. Adsorption was found to follow the Freundlich isot herm model. The adsorption capacity of carbonized sugi wood was comparable to that of commercial activated carbon.