Energy and Ecology
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Environment and Management
Research findings from F.C. Wu et al update understanding of environment and management
May 14th, 2010
According to a study from Taiwan, "In this work, unburnt coal (UC) in bottom ash from coal-fired power plants was soaked in KOH solution and activated for 1 h at 780 degrees C. The yield of activated carbons varied from 47.8 to 54.8% when the KOH/UC weight ratio changed from 2 to 4. Pore properties of these activated carbons including the BET surface area, pore volume, pore size distribution, and pore diameter were characterized based on N-2 adsorption isotherms."
"It was shown that the isotherms for the adsorption of methylene blue, acid blue 74, and 4-chlorophenol from aqueous solutions on these activated carbons at 30 degrees C were well fitted by the Langmuir equation...
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Source: Energy and Ecology (2010-05-14)