Analysis of mercury species present during coal combustion by thermal desorption

[EN] Mercury in coal and its emissions from coal-fired boilers is a topic of primary environmental concern in the United States and Europe. The predominant forms of mercury in coal-fired flue gas are elemental (Hg0) and oxidized (Hg2+, primarily as HgCl2). Because Hg2+ is more condensable and far mo...

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Authors: López Antón, María Antonia, Yuan, Yang, Perry, Ron, Maroto Valer, Mercedes
Format: article
Publication Date:2010
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/84561
Online Access:http://hdl.handle.net/10261/84561
Access Level:Open access
Keyword:Mercury
Mercurio
Thermal desorption
Coal combustion
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spelling Analysis of mercury species present during coal combustion by thermal desorptionLópez Antón, María AntoniaYuan, YangPerry, RonMaroto Valer, MercedesMercuryMercurioThermal desorptionCoal combustion[EN] Mercury in coal and its emissions from coal-fired boilers is a topic of primary environmental concern in the United States and Europe. The predominant forms of mercury in coal-fired flue gas are elemental (Hg0) and oxidized (Hg2+, primarily as HgCl2). Because Hg2+ is more condensable and far more water soluble than Hg0, the wide variability in mercury speciation in coal-fired flue gases undermines the total mercury removal efficiency of most mercury emission control technologies. It is important therefore to have an understanding of the behaviour of mercury during coal combustion and the mechanisms of mercury oxidation along the flue gas path. In this study, a temperature programmed decomposition technique was applied in order to acquire an understanding of the mode of decomposition of mercury species during coal combustion. A series of mercury model compounds were used for qualitative calibration. The temperature appearance range of the main mercury species can be arranged in increasing order as HgCl2 < HgS < HgO < HgSO4. Different fly ashes with certified and reference values for mercury concentration were used to evaluate the method. This study has shown that the thermal decomposition test is a newly developed efficient method for identifying and quantifying mercury species from coal combustion products.The financial support for this work was provided by the project ABETRAP (RFCR-CT-2006-00006) and Ministerio de Ciencia e Innovacion (programme of postdoctoral contracts abroad).Peer reviewedElsevier201320132010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/84561reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.fuel.2009.08.034info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/845612026-05-22T06:33:51Z
dc.title.none.fl_str_mv Analysis of mercury species present during coal combustion by thermal desorption
title Analysis of mercury species present during coal combustion by thermal desorption
spellingShingle Analysis of mercury species present during coal combustion by thermal desorption
López Antón, María Antonia
Mercury
Mercurio
Thermal desorption
Coal combustion
title_short Analysis of mercury species present during coal combustion by thermal desorption
title_full Analysis of mercury species present during coal combustion by thermal desorption
title_fullStr Analysis of mercury species present during coal combustion by thermal desorption
title_full_unstemmed Analysis of mercury species present during coal combustion by thermal desorption
title_sort Analysis of mercury species present during coal combustion by thermal desorption
dc.creator.none.fl_str_mv López Antón, María Antonia
Yuan, Yang
Perry, Ron
Maroto Valer, Mercedes
author López Antón, María Antonia
author_facet López Antón, María Antonia
Yuan, Yang
Perry, Ron
Maroto Valer, Mercedes
author_role author
author2 Yuan, Yang
Perry, Ron
Maroto Valer, Mercedes
author2_role author
author
author
dc.subject.none.fl_str_mv Mercury
Mercurio
Thermal desorption
Coal combustion
topic Mercury
Mercurio
Thermal desorption
Coal combustion
description [EN] Mercury in coal and its emissions from coal-fired boilers is a topic of primary environmental concern in the United States and Europe. The predominant forms of mercury in coal-fired flue gas are elemental (Hg0) and oxidized (Hg2+, primarily as HgCl2). Because Hg2+ is more condensable and far more water soluble than Hg0, the wide variability in mercury speciation in coal-fired flue gases undermines the total mercury removal efficiency of most mercury emission control technologies. It is important therefore to have an understanding of the behaviour of mercury during coal combustion and the mechanisms of mercury oxidation along the flue gas path. In this study, a temperature programmed decomposition technique was applied in order to acquire an understanding of the mode of decomposition of mercury species during coal combustion. A series of mercury model compounds were used for qualitative calibration. The temperature appearance range of the main mercury species can be arranged in increasing order as HgCl2 < HgS < HgO < HgSO4. Different fly ashes with certified and reference values for mercury concentration were used to evaluate the method. This study has shown that the thermal decomposition test is a newly developed efficient method for identifying and quantifying mercury species from coal combustion products.
publishDate 2010
dc.date.none.fl_str_mv 2010
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/84561
url http://hdl.handle.net/10261/84561
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.fuel.2009.08.034
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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