Comparison of Removal Efficiencies for Ammonia and Amine Gases between Woody Charcoal and Activated Carbon

概要

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The removal efficiency of NH_3, (CH_3)NH_2, (CH_3)_2NH and (CH_3)_3N into woody charcoal carbonized at 500℃ and activated carbon was determined by the attenuation of their concentrations in the 5 1 bags at cool (5℃) and room temperature (20℃). A discussion follows on the deodorization performance against four gases with attention to the physical and chemical characteristics of adsorbent surfaces. It was found that the high acidity of woody charcoal surface was more suitable for the adsorption of NH_3 and (CH_3)NH_2 gases than the activated carbon under both temperatures, and the activated carbon having larger micro, meso pore volumes following an increase in specific surface area showed higher capacity for (CH_3)_3N gas adsorption than the woody charcoal. Also the activated carbon is more suitable for (CH_3)_2NH gas adsorption than the woody charcoal at 5℃, but its removal efficiency using the activated carbon is lower than the woody charcoal at 20℃. Much acidic functional groups on the adsorbent has high adsorption potential just like chemical adsorption is necessary to enhancement of (CH_3)_2NH gas at 20℃.
公益社団法人日本薬学会の論文
2004-04-01