紫外線照射と活性炭吸着を併用した模擬廃水からのサッカリン除去の検討

概要

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The present study is concerned with the application of UV light irradiation as the pretreatment method of activated carbon adsorption of saccharin from aqueous solution. For the purpose of improving the efficiency of saccharin removal from water, UV light irradiation was followed by subsequent activated carbon adsorption. Then, the results of saccharin removal between the two cases : activated carbon adsorption combined with UV light irradiation pretreatment and activated carbon adsorption alone, were compared.As the result, it was found that the removal ratio of 43 % at equilibrium state of activated carbon adsorption was increased to 67 % when saccharin solution was pretreated by UV light irradiation for 30 min in the air. The removal ratio of saccharin was kept at 87 % by UV light irradiation only for 180 min in the air, when activated carbon adsorption was not employed. But, the removal ratio of saccharin became almost 100 %, when activated carbon was employed after pretreatment of UV light irradiation of 180 min.Further, the TOC removal ratio obtained only by UV light irradiation of saccharin solution was 26 % after 180 min UV light irradiation in the air. However, the TOC removal ratio after 16 h activated carbon adsorption of saccharin solution was increased to 73 % when saccharin solution was pretreated with UV light irradiation for 180 min in the air.
2005-01-01