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A Study on the Characteristics and Utilization of Ash from Sewage Sludge Incinerator  

Lee, Hwa-Young (Battery Research Center, Korea Institute of Science & Technology)
Publication Information
Resources Recycling / v.17, no.3, 2008 , pp. 3-9 More about this Journal
Abstract
The measurement of physicochemical properties and chemical composition of SSA(sewage sludge ash) has been carried out and the preparation of lightweight material has also been performed using SSA for reuse as building or construction materials. For this aim, lightweight material has been prepared by forming the mixture of SSA, lightweight filler and inorganic binder followed by calcination at elevated temperature and characterized in terms of density and compressive strength. The pH of fly ash was found to be slightly alkaline, pH 8.69, due to the addition of caustic soda in order to neutralize the acidic gas while the pH of bottom ash was 6.48 Heavy metal leachability based on the standard leach test was also found to be below the detection limit for Cd, Cu, Pb, As and Cr of SSA. As far as the compressive strength of lightweight material was concerned, the compressive strength of lightweight material using fly ash was higher than that of lightweight material using bottom ash.
Keywords
SSA; recycling; lightweight material; compressive strength;
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Times Cited By KSCI : 1  (Citation Analysis)
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