Gaseous emissions from ceramics manufactured with urban sewage sludge during firing processes.
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.
Cusidó
J A
JA
Institut Politècnic del Campus de Terrassa, Universitat Politècnica de Catalunya, Ctra. Nacional 150, km. 14.5, Barcelona, Spain. joan.antoni.cusido@upc.es
Cremades
L V
LV
González
M
M
D016902:Air Pollution, Indoor / Q000032:analysis; D002516:Ceramics / Q000032:analysis*; D006256:Hazardous Waste / Q000032:analysis*; D006801:Humans; D009930:Organic Chemicals / Q000032:analysis*; D012037:Refuse Disposal / Q000379:methods; D012722:Sewage / Q000032:analysis*; D014835:Volatilization
D006256:Hazardous Waste; D009930:Organic Chemicals; D012722:Sewage