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Element associations in ash from waste combustion in fluidized bed

Karin Karlfeldt Fedje (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Sebastien Rauch (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik) ; Paul Cho (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Britt-Marie Steenari (Institutionen för kemi- och bioteknik, Oorganisk miljökemi)
Waste Management (0956-053X). Vol. 30 (2010), 7, p. 1273-1279.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: municipal solid-waste, plasma-mass spectrometry, la-icp-ms, fly-ash, trace-elements, heavy-metals, incineration, particles, volatilization, residues



Denna post skapades 2010-07-01. Senast ändrad 2015-03-30.
CPL Pubid: 123559

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)
Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik

Ämnesområden

Kemi

Chalmers infrastruktur