Edp Naturgas Energia

Bilbao, Spain

Edp Naturgas Energia

Bilbao, Spain
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Izquierdo U.,University of the Basque Country | Barrio V.L.,University of the Basque Country | Bizkarra K.,University of the Basque Country | Gutierrez A.M.,Edp Naturgas Energia | And 5 more authors.
Chemical Engineering Journal | Year: 2014

This study examined the use of three different Zeolites L as catalyst support for biogas valorisation - a renewable resource - through reforming processes. These aluminosilicates are characterised by their high surface areas, affinity for CO2, and thermal stability, which makes them an interesting and promising support for reforming reactions at high temperature. Three nickel monometallic and their homologous rhodium-nickel bimetallic catalysts were prepared by the incipient wetness impregnation method for each type of Zeolite L. Significant physicochemical differences between the Zeolites L and catalysts were noticed by the characterisation using scanning electron microscope (SEM), transmission electron microscope (TEM), inductively coupled plasma atomic emission spectrometry (ICP-AES), H2 chemisorption, N2 physisorption, temperature programmed reduction (TPR) X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) techniques. The catalysts were tested in dry reforming (DR), steam reforming (SR) with steam to carbon (S/C) ratio of 1.0 and 2.0; oxidative reforming (OR) at O2/CH4=0.25; and tri-reforming (TR) with S/C ratio of 1.0 and O2/CH4=0.25. For all the experiments, a synthetic biogas, which consisted of 60% CH4 and 40% CO2 (vol.), was fed to a fixed bed reactor system at 1073K and atmospheric pressure. The same experimental conditions and reactions were studied in previous works of the authors, in which γ-Al2O3 was used as a catalyst support. Thus, this work allows comparing the achieved activities by the tested catalysts supported on those different supports. Among the processes studied, for the biogas SR at S/C=1.0 and TR processes, H2/CO ratios near to 2.0 were obtained, which is an appropriate ratio for the Fischer-Tropsch synthesis (FTS). In the case of the catalysts tested, the Rhodium (Rh) incorporation improved their activity. RhNi catalyst based on Zeolite L (30-60nm) is the most active catalyst for hydrogen generation. © 2013 Elsevier B.V.


Gutierrez A.Ma.,EDP Naturgas Energia | Ortiz A.,EDP Naturgas Energia | Arraibi J.R.,EDP Naturgas Energia | Barrio L.,University of the Basque Country | And 6 more authors.
International Gas Research Conference Proceedings | Year: 2014

The LIFE BIOGRID European project is a highly innovative energy project that combines biogas production with carbon capture and storage technology. The project demonstrates the concept called "carbon-negative-bio-energy". The environmentals impact associated with Biomethane as transport fuel and its injection into the Spanish distribution natural gas network from a pig manure biogas production plant were studied. The carbon-negative-bio-energy concept was demonstrated using the Life Cycle Assessment (LCA) method, which consists in the combination of biogas production plant with two carbon capture and storage (CCS) prototype systems, i.e., Gas treatment Power Package and Pilot Algae Plant (PAP). The use of the Biomethane as transport fuel showed a positive environmental impact but the impact from the LIFE BIOGRID process represented 50% of environmental benefit comparing with other alternative fuel. Taking into account the CO2 capture from manure, the negative total impact of biogas production and upgrading processes means that the manure has captured more CO2 than all the process consumptions together as electricity, water, chemical products, etc. Using the PAP system, the CO2 emissions to the atmosphere were avoided by CO2 sequestration from algae. The results for the life cycle assessment (LCA) of the system confirmed the negative total impact of the LIFE BIOGRID process with grid injection, in terms of the kg of CO2 eq. This is an abstract of a paper presented at the International Gas Union Research Conference (Copenhagen, Denmark 9/17-19/2014).


Castro-Hurtado I.,University of Navarra | Ayerdi I.,University of Navarra | Castano E.,University of Navarra | Gutierrez A.M.,EDP Naturgas Energia | Arraibi J.R.,EDP Naturgas Energia
Proceedings of the 2015 10th Spanish Conference on Electron Devices, CDE 2015 | Year: 2015

The aim of this work is to implement a series of novel multiparametric techniques based on micro-nanotechnology to evaluate the quality of natural gas. Two low cost sensors have been fabricated by thin film technology and tested under different natural gas compositions. A thermal conductivity sensor to determine the MN of the gas, and a SAW sensor, which detects the change on gas viscosity, to calculate the HCV of the mixture. These microsensors provide an accurate relationship between the parameter to be determined and the physical property measured. The advantage of the method proposed is that the properties (HCV or MN) of the gas mixture are measured by indirect methods employing MEMS, this means that low cost and combustion-less process is carried out. © 2015 IEEE.


Castro-Hurtado I.,University of Navarra | Ayerdi I.,University of Navarra | Castano E.,University of Navarra | Gutierrez A.Ma.,EDP Naturgas Energia | Arraibi J.R.,EDP Naturgas Energia
International Gas Research Conference Proceedings | Year: 2014

A series of novel multiparametric techniques based on micro-nanotechnology was developed to evaluate the quality of natural gas. These microsensors provide an accurate relationship between the parameter to be determined and the physical property measured. Some quality parameters of natural gas, e.g., high calorific value and methane number, can be determined by this low cost and combustion-less process. These sensors can also be integrated into an intelligent sensor network for developing a smart metering system that will result in a more rational use of energy and greater cost savings. This is an abstract of a paper presented at the International Gas Union Research Conference (Copenhagen, Denmark 9/17-19/2014).

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