Element associations in ash from waste combustion in fluidized bed
Artikel i vetenskaplig tidskrift, 2010

The incineration of MSW in fluidized beds is a commonly applied waste management practice. The composition of the ashes produced in a fluidized bed boiler has important environmental implications as potentially toxic trace elements may be associated with ash particles and it is therefore essential to determine the mechanisms controlling the association of trace elements to ash particles, including the role of major element composition. The research presented here uses micro-analytical techniques to study the distribution of major and trace elements and determine the importance of affinity-based binding mechanisms in separate cyclone ash particles from MSW combustion. Particle size and the occurrence of Ca and Fe were found to be important factors for the binding of trace elements to ash particles, but the binding largely depends on random associations based on the presence of a particle when trace elements condensate in the flue gas. (C) 2009 Elsevier Ltd. All rights reserved.

particles

municipal solid-waste

fly-ash

plasma-mass spectrometry

la-icp-ms

volatilization

incineration

heavy-metals

trace-elements

residues

Författare

Karin Karlfeldt Fedje

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

Sebastien Rauch

Chalmers, Bygg- och miljöteknik, Vatten Miljö Teknik

Paul In-Young Cho

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

Britt-Marie Steenari

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

Waste Management

0956-053X (ISSN)

Vol. 30 1273-1279

Ämneskategorier

Kemi

DOI

10.1016/j.wasman.2009.09.012