Gaseous emissions from ceramics manufactured with urban sewage sludge during firing processes
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The re-use of sewage sludge without any treatment as primary material—mixed with clays—in order to obtain structural ceramics for buildings has been successfully improved. In the Ecobrick® project, the firing of a mixture of specific percentages of three components (clays, sludges and forest debris) resulted in a lighter and more thermal and acoustic insulating brick, compared with conventional clay-bricks. Volatile organic compounds (VOC) emission from the manufacturing of ceramics is the most important aspect to control. In the Ecobrick® project VOC emissions were monitored by using a bench-scale furnace. The study was conducted using an EPA recommended sampling train and portable sampling tubes that were thermally desorbed and analyzed by gas chromatography/mass spectrometry. Drying of raw sewage-sludge and firing processes were considered separately. In this paper, we present VOC emissions coming from the firing step of the Ecobrick® production
CitacióCusido, J.; Cremades, L.V.; Gonzalez, M. Gaseous emissions from ceramics manufactured with urban sewage sludge during firing processes. "Waste management", Maig 2003, vol. 23, núm. 3, p. 273-280.
Versió de l'editorhttp://www.sciencedirect.com/science/journal/0956053X