Fuel 212 (2018) 19–26 Contents lists available at ScienceDirect Fuel journal homepage: www.elsevier.com/locate/fuel Full Length Article Feature changes of mercury during the carbonation of FGD gypsum from diﬀerent sources a, b b a a Tan Wenyi , Gu Suping , Xia Wei , Li Youxu , Zhang Zixin Environment Engineering School, Nanjing Institute of Technology, Nanjing 211167, PR China Nanjing Huaneng Power Int'l Inc, 210044, PR China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Flue gas desulfurization gypsum (FGDG), as byproducts in power plants, is produced in large quantities. A novel Flue gas desulfurization gypsum (FGDG) technology to recycle FGDG in carbonation process has recently been found. However, the potential hazards to Heavy metals human health and to environment originated from heavy metals residual in FGDG have to be considered in the Mercury recycled process. In this study, six FGDG samples (denoted as S1-S6) from coal-ﬁred power plants equipped with CO sequestration diﬀerent FGD conﬁgurations were collected. Heavy metal contents in six original FGDG samples and in their corresponding solid products after carbonation were determined by ICP-OES and cold vapor atomic ﬂuorescence spectrometer (CVAFS). As one of toxic heavy metals present in FGDG, Hg speciation variations induced
Fuel – Elsevier
Published: Jan 15, 2018
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