Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Extraction of Impregnated Metals from Charcoal Active Carbon with Supercritical Carbon Dioxide

초임계 이산화탄소에 의한 금속 담지 활성탄으로부터 담지금속의 추출

  • 이종철 (국방과학연구소, 화생방부) ;
  • 류삼곤 (국방과학연구소, 화생방부)
  • Published : 2008.10.31
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Abstract

Metal ions such as Cu and Cr were extracted from the Cu, Cr and Ag impregnated active carbon by contacting the solid surfaces with supercritical carbon dioxide(Sc-$CO_2$) containing chelating agents. About 10g of the active carbon sample were loaded in a vertical tube extractor contacting with $CO_2$ flowing from the bottom of the tube for 6hrs. The ligands used were acetyl acetone(AA) and Cyanex-302(C-302). Water and methanol were used as entrainers to study the effect of co-solvent to $CO_2$. Experimental results showed that C-302 was more effective than AA in removing Cu with the maximum extraction of 42.0wt%, while 57.6wt% of Cr was extracted with AA from the sample.

Keywords

References

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