Abstract
Activated carbons from rice-straw can be used as an adsorbents for the purification of water were prepared and evaluated. The adsorptive capacities of activated carbons were measured by iodine, potassium permanganate, phenol and metals. It was observed by electron microscope (SEM) and IR spectrum that organic components in the rice-straw and its carbonization product were disappeared, slit-shaped and porous structures were formed by activation. There was no relationship between temperature and adsorption of iodine but adsorption of potassium permanganate increased as temperature rose. The adsorption of the phenol was greater than 99%. The adsorption data of phenol at 25°C obeyed the Freundlich's isotherm. Various metals except sodium were not removed by activated carbon.
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Kim, K., Lee, DS. A study on adsorptive properties of activated carbons produced from rice-straw. Arch. Pharm. Res. 14, 249–254 (1991). https://doi.org/10.1007/BF02876864
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DOI: https://doi.org/10.1007/BF02876864