Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 158, Issue 2-3, Pages 585-592Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2008.01.116
Keywords
Dioxin; Heavy metals; Sewage sludge; Emission; Cement kiln Tyres; Waste Co-combustion
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Funding
- CEMEX ESPANA, S.A.
- Spanish MCT [CTQ-05262/PPQ, GV06/069]
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In this work, an analysis of the emission of different pollutants when replacing partially the fuel type used in a cement kiln is done. The wastes used to feed the kiln were tyres and two types of sewage sludge, The increasing mass flow of sludge is between 700 kg h(-1) and 5500 kg h(-1) l, for a total production of clinker of 150 t h(-1), whereas the fed tyres were in the flow range of 500-1500 kg h(-1). Dioxins and furans, polycyclic aromatic hydrocarbons (PAHs) and other hydrocarbons, heavy metals, HCl and HF. CO, CO2, NO, and other parameters of the stack were analyzed, according to the standard methods of sampling and determination, through more than I year in six series: one blank (no sewage sludge) and five more with increasing amount of sludge and/or tyres. The emission of PAHs and dioxins seems to increase with the amount of tyres fed to the kiln, probably due to the led point used for this waste. (C) 2008 Elsevier B.V. All rights reserved.
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