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Neuer-Etscheidt, K. ; Nordsieck, H.O.* ; Liu, Y.* ; Kettrup, A. ; Zimmermann, R.

PCDD/F and other micropollutants in MSWI crude gas and ashes during plant start-up and shut-down processes.

Environ. Sci. Technol. 40, 342-349 (2006)

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Open Access Green as soon as Postprint is submitted to ZB.

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Nonstationary combustion conditions at municipal solid waste incineration (MSWI) plants cause increased crude gas concentrations of polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), and other products of incomplete combustion (PIC). Such transient conditions occur, e.g., during and after start-up processes in MSWI plants. The start-up and shut-down processes of a MSWI plant were investigated in detail. PCDD/F and other PIC concentrations were determined in the crude gas, in the boiler ash, and in the ash from the electrostatic precipitator (ESP ash), with the outcome that only the start-up procedure significantly affected the concentrations of the organic pollutants in the flue gas and in the ESP ash. The shut-down procedure was evaluated as less problematic for the concentration of the organic pollutants. Moreover the concentration of the PCDD/F and other PIC in the boiler ash was determined as not influenced by shut-down and start-up processes. The homologue profiles and the congener patterns as well as the PCDF/PCDD ratio in the flue gas and in the ESP ash change during MSWI start-up. The changing patterns point at a transition from dominant de novo synthesis to precursor synthesis.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords pcdd/f; start-up; shut-down; flue gas; solid residues

ISSN (print) / ISBN 0013-936X

e-ISSN 1520-5851

Journal Environmental Science & Technology

Quellenangaben Volume: 40, Issue: 1, Pages: 342-349

Publisher ACS

Publishing Place Washington, DC

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Ecological Chemistry (IOEC)
PPM-MEX-Molecular EXposomics (MEX)
Cooperation Group Comprehensive Molecular Analytics (CMA)