Activated carbons from Mongolian coals by thermal treatment
Keywords:lignite, subbituminous and bituminous coals, activated carbon, oxidized carbon
Mongolian different rank coals were used as raw material to prepare activated
carbons by physical activation method. The coal derived carbons were oxidized with nitric acid in order to introduce surface oxygen groups. The ultimate elemental analysis, scanning electron microscopy, surface area, pore size distribution analysis and selective neutralization method were used to characterize the surface properties of activated carbons, oxidized
carbons and raw coals. The effect of coal grade on the adsorption properties of the carbons were studied. It was concluded that Naryn sukhait bituminous coal could be serve as suitable raw material for production of activated carbons for removal of heavy metal ions from solution.
Mongolian Journal of Chemistry Vol.12 2011: 60-64
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