dan19_83 Posted February 3, 2005 Share Posted February 3, 2005 I was wondering if anybody knew how to purify Activated Carbon in the lab. It's ash content is about 4% which i know is small but we still need to bring it down further. Dissolving in acids doesn't remove all the residue. any ideas? Link to comment Share on other sites More sharing options...
YT2095 Posted February 3, 2005 Share Posted February 3, 2005 without a breakdown of the ashs composition, its a near impossible question to answer. what acid did you use? I`de opt for either Nitric or Hydrochloric, Sulphuric can make matters worse (esp with Calcium based impurities). a Strong soln of Potassium Hydroxide 1`st would eliminate some of them, and then follow up with your acid treatment, then dry it using UV light. that will cover most organic and inorganic impurities. things like Silicon will be hard to remove without some very nasty chems like hydrofluoric acid. hope that helps a little Link to comment Share on other sites More sharing options...
dan19_83 Posted February 3, 2005 Author Share Posted February 3, 2005 Tried with all three acids already and the one that seemed to have the best effect was actually sulphuric. will try the base KOH aswell. cheers Link to comment Share on other sites More sharing options...
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