Emissão de mercúrio para a atmosfera pela queima de gás natural no Brasil



Document title: Emissão de mercúrio para a atmosfera pela queima de gás natural no Brasil
Journal: Quimica nova
Database: PERIÓDICA
System number: 000313383
ISSN: 0100-4042
Authors: 1
2
3
Institutions: 1Universidade Federal Fluminense, Departamento de Geoquimica, Niteroi, Rio de Janeiro. Brasil
2Petroleo Brasileiro S.A., Gas & Energia, Rio de Janeiro. Brasil
3Universidade Federal do Ceara, Instituto de Ciencias do Mar, Fortaleza, Ceara. Brasil
Year:
Season: Abr
Volumen: 30
Number: 2
Pages: 366-369
Country: Brasil
Language: Portugués
Document type: Artículo
Approach: Experimental, analítico
English abstract Increasing natural gas use in Brazil triggered a discussion of its role as a Hg source. We show that Hg emissions to the atmosphere from fossil fuel combustion for power generation in Brazil contribute with 6.2% (4.2 t yr-1) to the total anthropogenic Hg atmospheric emissions, with coal combustion and biomass burning as major sources. Natural gas contributes with 0.04 t yr-1, mostly from electricity generation (88%) and industrial uses (7.6%). Preliminary results on Hg concentrations in natural gas suggest that a large fraction of it is trapped during refining and transport, which may create Hg point sources between extraction and consumption
Disciplines: Geociencias,
Química,
Ingeniería
Keyword: Ingeniería ambiental,
Gas natural,
Mercurio,
Emisiones atmosféricas,
Contaminación atmosférica
Keyword: Earth sciences,
Chemistry,
Engineering,
Environmental engineering,
Natural gas,
Mercury,
Atmospheric emissions,
Atmospheric pollution
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