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Mercury Stable Isotope Fractionation During Coal Combustion in Coal-Fired Boilers: Reconciling Atmospheric Hg Isotope Observations with Hg Isotope Fractionation Theory

Bulletin of environmental contamination and toxicology, 2019-05, Vol.102 (5), p.657-664 [Peer Reviewed Journal]

Springer Science+Business Media, LLC, part of Springer Nature 2019 ;Bulletin of Environmental Contamination and Toxicology is a copyright of Springer, (2019). All Rights Reserved. ;ISSN: 0007-4861 ;EISSN: 1432-0800 ;DOI: 10.1007/s00128-018-2531-1 ;PMID: 30603766

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Title:
Mercury Stable Isotope Fractionation During Coal Combustion in Coal-Fired Boilers: Reconciling Atmospheric Hg Isotope Observations with Hg Isotope Fractionation Theory
Author: Sun, Ruoyu
Subjects: Aquatic Pollution ; Atmospheric models ; Boilers ; COAL ; COMBUSTION ; Combustion products ; Computer simulation ; Discharge ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; ENVIRONMENTAL SCIENCES ; Flue gas ; Focused Review ; Fractionation ; Gases ; Isotope fractionation ; Isotopes ; Mercury ; Mercury (metal) ; MERCURY 202 ; PARTICULATES ; Pollution ; REDOX PROCESS ; REVIEWS ; Soil Science & Conservation ; Species ; Stable isotopes ; Waste Water Technology ; Water Management ; Water Pollution Control
Is Part Of: Bulletin of environmental contamination and toxicology, 2019-05, Vol.102 (5), p.657-664
Description: Mercury (Hg) stable isotope is a useful tool to understand the transformation of atmospheric Hg. The observation on the enrichment of heavier isotopes in gaseous elemental Hg (GEM) relative to oxidized Hg II species in atmosphere cannot be convincingly explained by isotope fractionation of Hg redox processes. This review shows that the large Hg isotope mass dependent fractionation (MDF) in coal-fired boilers is one of the underlying reasons. The reported Hg isotope data of feed coals and their combustion products are first summarized to give a general overview of how Hg isotopes fractionate before Hg discharge from coal-fired boilers. Then, predictive MDF models are discussed to simulate δ 202 Hg values of different Hg species in coal combustion flue gases. The discharged GEM is predicted to have the highest δ 202 Hg followed by gaseous Hg II and particulate-bound Hg II , which is in consistent with the observed MDF pattern of atmospheric Hg species.
Publisher: New York: Springer US
Language: English
Identifier: ISSN: 0007-4861
EISSN: 1432-0800
DOI: 10.1007/s00128-018-2531-1
PMID: 30603766
Source: ProQuest Central

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Mercury Stable Isotope Fractionation During Coal Combustion in Coal-Fired Boilers: Reconciling Atmospheric Hg Isotope Observations with Hg Isotope Fractionation Theory

Springer Science+Business Media, LLC, part of Springer Nature 2019 ;Bulletin of Environmental Contamination and Toxicology is a copyright of Springer, (2019). All Rights Reserved. ;ISSN: 0007-4861 ;EISSN: 1432-0800 ;DOI: 10.1007/s00128-018-2531-1 ;PMID: 30603766

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