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| Titel |
Hydrocarbons emissions from Cerro Prieto Geothermal Power Plant, Mexico |
| VerfasserIn |
Karina Navarro, Rafael Navarro-Gonzalez, José de la Rosa, Oscar Peralta, Telma Castro, Mireya Imaz |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250086996
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| Publikation (Nr.) |
 EGU/EGU2014-953.pdf |
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| Zusammenfassung |
| One of the most important environmental issues related to the use of geothermal fluids to
generate electricity is the emission of non-condensable gases to the atmosphere. Mexico has
one of the largest geothermal plants in the world. The facility is located at Cerro Prieto, Baja
California, roughly 30 km south of Mexicali and the international boundary between
Mexico and United States. The Cerro Prieto power plant has 13 units grouped on four
individual powerhouses. Gas samples from 9 units of the four powerhouses were
collected during 4 campaigns conducted in May-July, 2010, February, 2012, December,
2012, and May, 2013. Gas samples from the stacks were collected in 1000 ml Pyrex
round flasks with Teflon stopcocks, and analyzed by gas chromatography–mass
spectrometry. Methane was the most abundant aliphatic hydrocarbon, with a concentration
that ranged from less than 1% up to 3.5% of the total gas mixture. Normal alkanes
represented the second most abundant species, and displayed a decreasing abundance
with increasing carbon number in the homologous series. Isoalkanes were also
present as isobutane and isopentane. Cycloalkanes occurring as cyclopentane and
cyclohexane, were detected only at trace level. Unsaturated hydrocarbons (alkenes and
alkynes) were not detected. Benzene was detected at levels ranging from less than 1%
up to 3.4% of the total gas mixture. Other aromatic hydrocarbons detected were
toluene, and xylenes, and were present at lower concentrations ( |
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