Potentially toxic elements in lignite and its combustion residues

Particle Size, Proximate, and Ultimate AnalysesChemical AnalysisPetrographic AnalysisMineralogySEM-EDSTrace Element AbundanceTrace Element AssociationTrace Element Enrichment and VolatilityEnvironmental ConcernsThe particle size analysis (Table 1) showed that the lignite has 10 % particles <6.70 μm, 50 % <22.88 μm, and 90 % <87.23 μm. Lignite fly ash and bottom ash have 90 % particles <112.78 and <172.04 μm, respectively. The content of finer size particles is relatively higher in the fly ash than bottom ash. The significant presence of finer particles in...