H2S emissions from Cerro Prieto geothermal power plant, Mexico, and air pollutants measurements in the area

► We measured pollutant gases during spring 2010 at Cerro Prieto, Mexico. ► Non-condensable gases from vent stacks were sampled and analyzed. ► A dispersion model was applied to H2S and validated. ► Pollutants measured never exceeded the Mexican air quality norms. ► Dispersion modeling shows concent...

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Bibliographic Details
Published in:	Geothermics Vol. 46; pp. 55 - 65
Main Authors:	Peralta, Oscar, Castro, Telma, Durón, Matilde, Salcido, Alejandro, Celada-Murillo, Ana-Teresa, Navarro-González, Rafael, Márquez, Claudia, García, José, de la Rosa, José, Torres, Ricardo, Villegas-Martínez, Raymundo, Carreón-Sierra, Susana, Imaz, Mireya, Martínez-Arroyo, Amparo, Saavedra, Isabel, Espinosa, María de la Luz, Torres-Jaramillo, Alejandro
Format:	Journal Article
Language:	English
Published:	Oxford Elsevier Ltd 01-04-2013 Elsevier
Subjects:	AERMOD dispersion modeling of H2S Air pollution Cerro Prieto geothermal plant Coefficients Criteria Dispersions Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Environmental concentration of H2S Exact sciences and technology Geothermal power plants Geothermics Goodness of fit Meteorological parameters Pollutants Pollution, environment geology Mexico Cerro Prieto Baja California Mexico Mexico, Baja California, Cerro Prieto AERMOD dispersion modeling of H2S Air pollution Environmental concentration of H2S Cerro Prieto geothermal plant hydrogen sulfide gas models atmospheric emission boundary layer concentration pollution North America gas chromatography pollutants quality power plants AERMOD dispersion modeling of H S winds standard samples Environmental concentration of H dispersion
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Summary:	► We measured pollutant gases during spring 2010 at Cerro Prieto, Mexico. ► Non-condensable gases from vent stacks were sampled and analyzed. ► A dispersion model was applied to H2S and validated. ► Pollutants measured never exceeded the Mexican air quality norms. ► Dispersion modeling shows concentrations of 0.045ppm in 15km radius. We measured meteorological parameters and environmental concentrations of hydrogen sulfide (H2S) and criteria pollutants at Cerro Prieto, Mexico, from May to July 2010. In addition, non-condensable gases from vent stacks at Cerro Prieto geothermal power plant were sampled and analyzed by gas chromatography–mass spectrometry. A dispersion model, which was validated with environmental measurements, was applied to H2S. Criteria pollutants never exceeded the Mexican air quality standards. Results from dispersion modeling were compared against measured concentrations showing acceptable agreements for Chi square goodness of fit (χ2) in the 95% significance level (α=0.05), at afternoons and evening events when boundary layer is decreasing and wind speed is less than 5.5ms−1. Determination coefficient of curve fitting for computed concentrations at less than 4km from the source was 0.513 and farther 0.568. This study was the first to measure criteria pollutants and H2S in Cerro Prieto area.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0375-6505 1879-3576
DOI:	10.1016/j.geothermics.2012.12.001