Journal: | Quimica nova |
Database: | PERIÓDICA |
System number: | 000313383 |
ISSN: | 0100-4042 |
Authors: | Lacerda, Luiz Drude de1 Santos, Angelo Francisco dos2 Marins, Rozane Valente3 |
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: | 2007 |
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 |
Full text: | Texto completo (Ver HTML) |