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Browsing by Subject "Methane"

Now showing items 21-40 of 41

Estudio de deshidoaromatización de metano sobre catalizadores 3%mo/hzsm-5 y permeación de hidrogeno a través de membranas La6W012

Zanón González, Raquel (Universitat Politècnica de València, 2016-01-18)

[EN] Study of methane dehydroaromatization on 3%Mo/HZSM-5 catalysts at 700°C and 0.207 bar, and occasionally at higher temperature (750°C). Hydrogen permeation through ceramic membranes made of La6W012 was investigated ...
Evolution of chemical composition and gas emissions from aged pig slurry during outdoor storage with and without prior solid separation

Moset, V.; Cambra López, María; Estellés, F.; Torres Salvador, Antonio Germán; Cerisuelo, Alba (Elsevier, 2012-01)

Chemical composition and gas emissions from two types of pig slurry were evaluated: the liquid fraction of mechanical solid-liquid separated slurry (SS), and raw slurry (RS). The slurry was obtained at the end of a pig ...
Experimental study of the anaerobic urban wastewater treatment in a submerged hollow-fibre membrane bioreactor at pilot scale

Giménez García, Juan Bautista; Robles Martínez, Ángel; Carretero Martín, Laura; Durán Pinzón, Freddy; Ruano García, María Victoria; Gatti, Marcela Noemi; Ribes Bertomeu, Jose; Ferrer Polo, José; Seco Torrecillas, Aurora (Elsevier, 2011-10)

The aim of this study was to assess the effect of several operational variables on both biological and separation process performance in a submerged anaerobic membrane bioreactor pilot plant that treats urban wastewater. ...
Factors affecting CH4 and NH3 emissions from pig slurry in commercial farms

Fernández Ochando, Álvaro (Universitat Politècnica de València, 2014-02-04)

[ES] Hoy en día cada vez hay más preocupación sobre los posibles efectos medioambientales provocados por la ganadería. La ganadería es una importante fuente de gases contaminantes a la atmósfera como el amoníaco (NH3) y ...
Impacto del nivel de grasa y su interacción con la fibra sobre las emisiones de amoniaco y metano en purines de cerdos de cebo

Flores Gil, Viviana Nathalie (Universitat Politècnica de València, 2016-07-19)

[EN] Nutritional strategies in pig production are of utmost relevance in the reduction of the impact on the environment. The objective of this study was to assess the effect of the inclusion of an unreliable source of ...
Light-Promoted Hydrogenation of Carbon Dioxide¿An Overview

Puga Vaca, Alberto (Springer Verlag (Germany), 2016-09)

[EN] Hydrogenation of carbon dioxide is considered as a viable strategy to generate fuels while closing the carbon cycle (heavily disrupted by the abuse in the exploitation of fossil resources) and reducing greenhouse gas ...
Low frequency aeration of pig slurry affects slurry characteristics and emissions of greenhouse gases and ammonia

Calvet, S.; Hunt, J.; Misselbrook, T. (Elsevier, 2017)

[EN] Low frequency aeration of slurries may reduce ammonia (NH3) and methane (CH4) emissions without increasing nitrous oxide (N2O) emissions. The aim of this study was to quantify this potential reduction and to establish ...
Maximising resource recovery from wastewater grown microalgae and primary sludge in an anaerobic membrane co-digestion pilot plant coupled to a composting process

Serna-García, R.; Ruiz-Barriga, P.; Noriega-Hevia, G.; Serralta Sevilla, Joaquín; Paches Giner, Maria Aguas Vivas; Bouzas, A. (Elsevier, 2021-03-01)

[EN] A pilot-scale microalgae (Chlorella spp.) and primary sludge anaerobic co-digestion (ACoD) plant was run for one year in an anaerobic membrane bioreactor (AnMBR) at 35 °C, 70 d solids retention time and 30 d hydraulic ...
Modelación matemática del tratamiento del efluente de un Biorreactor Anaerobio de Membranas (AnMBR)

Yeste Donaire, Patricio Antonio (Universitat Politècnica de València, 2017-08-30)

Wastewaters, which traditionally have been conceived as a waste with a high impact on public health and environment, begin to be considered in much of the world as a resource from a energetic point of view and for producing ...
Monitorización de las concentraciones atmosféricas de metano y óxido nitroso a partir del Metop/IASI

García, O.; Schneider, M.; Ertl, B.; Sepúlveda, E.; Borger, C.; Diekmann, C.; Hase, F.; Khosrawi, F.; Cansado, A.; Aullé, M. (Universitat Politècnica de València, 2020-12-28)

[EN] Future of the Earth-atmosphere system will depend, to a large extent, on our capability of understanding all the processes driving climate change and, in this context, of outstanding importance are the monitoring and ...
New Combustion Modelling Approach for Methane-Hydrogen Fueled Engines Using Machine Learning and Engine Virtualization

Molina, Santiago; Novella Rosa, Ricardo; Gómez-Soriano, Josep; Olcina-Girona, Miguel (MDPI AG, 2021-11)

[EN] The achievement of a carbon-free emissions economy is one of the main goals to reduce climate change and its negative effects. Scientists and technological improvements have followed this trend, improving efficiency, ...
New experimental sublimation energy measurements for some relevant astrophysical ices

Luna Molina, Ramón; Satorre Aznar, Miguel Ángel; Santonja Moltó, Mª del Carmen; Domingo Beltran, Manuel (EDP Sciences, 2014-06)

Context. The knowledge of the sublimation energy of ices allows us to better understand the dynamics between surfaces and atmospheres of different environments of astrophysical interest where ices are present. Aims. ...
Partial oxidation of methane and methanol on FeOx-, MoOx- and FeMoOx-SiO2 catalysts prepared by sol-gel method: A comparative study

Cortés Ortiz, William G.; Delgado-Muñoz, Daniel; Guerrero Fajardo, Carlos Alberto; Agouram, Said; Sanchís, Ruth; Solsona, Benjamín; López Nieto, José Manuel (Elsevier, 2020-08)

[EN] FeOx-, MoOx and FeMoOx-SiO2 materials prepared by a sol-gel procedure have been evaluated as catalysts for the partial oxidation of methane and methanol. The effect of decreasing the pH of the synthesis gel on the ...
Replacement of alfalfa hay (Medicago sativa) with maralfalfa hay (Pennisetum sp.) in diets of lactating dairy goats

Criscioni-Ferreira, Patricia Fabiola; Martí Vicent, José Vicente; Pérez Baena, Ion; Palomares Carrasco, José Luis; Larsen, Torben; Fernández Martínez, Carlos Javier (Elsevier Masson, 2016-09)

[EN] The objective of this experiment was to study the effects of substituting alfalfa (Medicago sativa) with maralfalfa (Pennisetum sp.) on energy, nitrogen and carbon balance, methane emission, and milk performance in ...
Representation of a mathematical model to predict methane output in dairy goats

Fernández Martínez, Carlos Javier; Espinos Gutierrez, Francisco Juan; López Luján, Mª del Carmen; García Diego, Fernando Juan; Cervera Fras, Mª Concepción (Elsevier, 2013-02)

Ruminants may contribute to global warming through the release of methane (CH4) gas by enteric fermentation. Most CH4 emissions from ruminants are estimated using simple regression equations. Thus a mechanistic dynamic ...
Segmental Poly(urethane-urea) elastomers based on polycaporlactone: structure and porperties

May Hernandez, Luis Humberto; Hernandez Sanchez, Fernando; Gómez Ribelles, José Luís; Sabater i Serra, Roser (Wiley, 2011)

A series of segmented poly(urethane-urea) polymers have been synthesized varying the hard segments content, based on the combination of polycaprolactone diol and aliphatic diisocyanate (Bis(4-isocyanatocyclohexyl)methane), ...
Selective room-temperature transformation of methane to C1 Oxygenates by deep UV Photolysis over zeolites

Sastre Calabuig, Francesc; Fornes Seguí, Vicente; Corma Canós, Avelino; García Gómez, Hermenegildo (American Chemical Society, 2011-11)

[EN] Methane can directly be transformed into liquid C 1 oxygenated products with selectivities above 95% at 13% conversion by deep UV photocatalysis, in the presence of H 2O and air. Pure silica zeolites, and more ...
Study of the Host Genetic Control over the Ruminal Microbiota and their Relationships with Methane Emissions in Dairy Cattle

Saborío Montero, Alejandro (Universitat Politècnica de València, 2022-07-30)

[ES] El análisis del control genético del hospedador sobre su microbiota ha sido señalado recientemente como un tema prometedor en diferentes campos de estudio. La relación entre el holobionte hospedador-microbioma y los ...
The inclusion of rapeseed meal in fattening pig diets, as a partial replacer of soybean meal, alters nutrient digestion, faecal composition and biochemical methane potential from faeces

Torres-Pitarch, A.; Moset, Verónica; Ferrer Riera, Pablo; Cambra López, María; Hernández, Pilar; Coma, J.; Pascual Amorós, María de los Desamparados; Serrano, Paula; Cerisuelo García, Alba (Elsevier Masson, 2014-12)

[EN] The effects of including rapeseed meal (RSM) as an alternative source of vegetable protein in pig diets on animal performance, nutrient digestibility and methane production from faeces was investigated. A total of 96 ...
Tuning the Adsorption Properties of Zeolites as Adsorbents for CO2 Separation: Best Compromise between the Working Capacity and Selectivity

García, Edder J.; Pérez-Pellitero, Javier; Pirngruber, Gerhard D.; Jallut, Christian; Palomino Roca, Miguel; Rey Garcia, Fernando; Valencia Valencia, Susana (American Chemical Society, 2014-06-11)

The choice of an appropriate adsorbent for CO2 separation by pressure-swing adsorption remains a field of intense research. In this work, several FAU and LTA zeolites with different Na contents (Si/Al ratios) are studied ...