GHG and black carbon emission inventories from Mezquital Valley: The main energy provider for Mexico Megacity.

The greenhouse gases and black carbon emission inventory from IPCC key category Energy was accomplished for the Mezquital Valley, one of the most polluted regions in Mexico, as the Mexico City wastewater have been continuously used in agricultural irrigation for more than a hundred years. In addition, thermoelectric, refinery, cement and chemistry industries are concentrated in the southern part of the valley, near Mexico City. Several studies have reported air, soil, and water pollution data and its main sources for the region. Paradoxically, these sources contaminate the valley, but boosted its economic development. Nevertheless, no research has been done concerning GHG emissions, or climate change assessment. This paper reports inventories performed by the 1996 IPCC methodology for the baseline year 2005. Fuel consumption data were derived from priority sectors such as electricity generation, refineries, manufacturing & cement industries, transportation, and residential use. The total CO2 emission result was 13,894.9 Gg, which constituted three-quarters of Hidalgo statewide energy category. The principal CO2 sources were energy transformation (69%) and manufacturing (19%). Total black carbon emissions were estimated by a bottom-up method at 0.66 Gg. The principal contributor was on-road transportation (37%), followed by firewood residential consumption (26%) and cocked brick manufactures (22%). Non-CO2 gas emissions were also significant, particularly SO2 (255.9 Gg), which accounts for 80% of the whole Hidalgo State emissions. Results demonstrated the negative environmental impact on Mezquital Valley, caused by its role as a Megacity secondary fuel and electricity provider, as well as by the presence of several cement industries.

Biocinética y modelado dinámico de la degradación anaerobia de vinazas de jugo de caña

El trabajo pretende desarrollar un modelo fenomenológico basado en principios conservativos y fundamentado en ecuaciones lineales adimensionales, aunque la realidad del sistema analizado contiene propiedades dinámicas no lineales. Como consecuencia de este hecho, no puede ser empleado un modelo único en todos los casos estudiados, aunque resulta de mucha utilidad tener modelos predictivos, a pesar de las posibles desviaciones que pudieran presentarse en el sistema. Por lo cual el modelo descripto es una herramienta prometedora que puede ayudar a entender las interacciones en estos procesos, desde reactores piloto hasta plantas de gran escala

Biocinética y modelado dinámico de la degradación anaerobia de vinazas de jugo de caña

El trabajo pretende desarrollar un modelo fenomenológico basado en principios conservativos y fundamentado en ecuaciones lineales adimensionales, aunque la realidad del sistema analizado contiene propiedades dinámicas no lineales. Como consecuencia de este hecho, no puede ser empleado un modelo único en todos los casos estudiados, aunque resulta de mucha utilidad tener modelos predictivos, a pesar de las posibles desviaciones que pudieran presentarse en el sistema. Por lo cual el modelo descripto es una herramienta prometedora que puede ayudar a entender las interacciones en estos procesos, desde reactores piloto hasta plantas de gran escala