Applied investigation on the interaction of hazardous elements binding on ultrafine and nanoparticles in Chinese anthracite-derived fly ash.
A multifaceted instrumental approach was employed to determine the chemistry and mineralogy of pulverized-coal-combustion fly ashes from two Chinese power plants. Techniques included traditional optical microscopy, X-ray diffraction, and chemical analysis along with a variety of electron beam methods. The aim is to demonstrate and bring together the wide variety of procedures dealing with F as the key element of concern, and determining its location in the mineral nanoparticles. The Hg content of the Anwen (Songzao coalfield) fly ashes is higher than that of the Diandong (East Yunnan) fly ashes, possibly owing to the greater C and Cl in the Anwen fly ashes. Both fly ash sources contain a variety of amorphous and nano-crystalline trace-element-bearing particles, both associated with multi-walled carbon nanotubes and as particles independent of carbons.
Centro Universitário Univates, Programa de Pós Graduação Ambiente e Desenvolvimento, Rua Avelino Tallini, 171, Universitário, 95900-000 Lajeado, RS, Brazil. lfsoliveira@univates.br
Luis F O
LF
Silva
André
A
Jasper
Maria L
ML
Andrade
Carlos H
CH
Sampaio
Shifeng
S
Dai
Xiao
X
Li
Tian
T
Li
Weimei
W
Chen
Xibo
X
Wang
Huidong
H
Liu
Lixin
L
Zhao
Shelley G
SG
Hopps
Robert F
RF
Jewell
James C
JC
Hower
D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry; D002681:China; D060729:Coal Ash / Q000032:analysis* / Q000737:chemistry*; D013058:Mass Spectrometry; D008854:Microscopy, Electron; D053758:Nanoparticles / Q000032:analysis / Q000737:chemistry; D011210:Power Plants; D012542:Scattering, Radiation; D013057:Spectrum Analysis
D000393:Air Pollutants; D060729:Coal Ash; D002244:Carbon