Results 251 to 260 of about 4,417 (299)
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Methane Emissions, Ruminants, and CO2
Microbe Magazine, 2010Mark Rasmussen's letter (October 2009 Microbe, p. 437) does a creditable job of clarifying the issue of the ruminant contribution to global methane emissions. But in doing so he inadvertently offers up an even larger falsehood than the one he is correcting: that “the carbon dioxide emitted by ruminants contributes as much or more towards global warming
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Combined CO2 Capture & Methanation
2021Current multistage CCU technologies using renewable electricity to yield fuels suffer from low energy efficiency and require large capital expenditures. To increase the efficiency of the whole process and reduce its cost, a possible innovative solution is represented by the combined capture and hydrogenation of CO2.
S. Cimino +5 more
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Recovery of Methane and CO2 Sequestration
2019Recovery of CBM on a commercial scale is associated with the dewatering process. The release in pressure liberates the adsorbed gas for the production. The vacant site can be utilized for the adsorption of other gases. Also the incumbent gas molecules can be displaced with a gas molecule that has more affinity towards the coal as compared to that of ...
Shivanjali Sharma +2 more
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Methane recovery from methane hydrate using pressurized CO2
Fluid Phase Equilibria, 2005Abstract The dynamics of CH 4 replacement in CH 4 hydrate with high-pressure CO 2 was observed with in situ laser Raman spectroscopy at temperatures ranging from 271.2 to 275.2 K and at an initial pressure of 3.25 MPa. The amount of CH 4 hydrate decomposition was found to be almost proportional to that of CO 2 hydrate formation for a series of
Masaki Ota +4 more
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On the Support Effect of the CO2 Methanation
2020This thesis addresses the catalyst support effect in the CO2 methanation, specifically the impact of the acid/base properties of the catalyst support. In the first part, support-activity correlations are developed by excluding particle sizes effects of the active component on the catalyst performance. To this end, uniform colloidal Ru nanoparticles are
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CO2 enhanced coalbed methane production in the Netherlands
Energy, 2002Abstract The technical and economical feasibility of CO2 sequestration in deep coal layers combined with enhanced coalbed methane (ECBM) production in the Netherlands has been explored. Annually, 3.4 Mtonne CO2 from chemical installations can be delivered to sequestration locations at 15 €/tonne and another 55 Mtonne from power generating facilities ...
Hamelinck, C.N. +7 more
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Properties of CO2 – Methane – Water for CO2 Geothermal Applications
SPE Europe Energy Conference and ExhibitionAbstract Using CO2 as a heat extraction medium from the subsurface offers several compelling advantages. These benefits result from CO2's distinct properties, notably its lower viscosity compared to water, as well as its pronounced density variations under varying pressures. Using CO2, it becomes possible to harness higher flow rates and
V. Arekhov +3 more
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Methanation of CO2 on supported Ru catalysts
Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1981The transformation of C in the form of CO2 into hydrocarbons was investigated on supported Ru catalysts. Special attention was paid to the surface processes occurring during the removal of the O atoms of CO2 by H2 and on the identification of surface species formed during the reaction.
Frigyes Solymosi +2 more
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Utilization of dissolved CO2 to control methane and acetate production in methanation reactor
Bioresource TechnologyThis study investigated the influence of dissolved CO2 on the selection of metabolic pathway using a methanation membrane bioreactor supplied with H2/CO2. Various ratios of H2/CO2 were applied (3.3, 3.8, 4.0, 4.5, and 5.0 (v/v)) to manipulate dissolved CO2 levels in the medium.
F. Paillet +6 more
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Aspects of CO2-reforming of Methane
1994The paper analyses present knowledge on the CO 2 -reforming reaction and discusses process options. CO 2 -reforming resembles conventional reforming. Different reaction rates can probably be related to kinetics. CO 2 -reforming involves higher thermody-namic potential for carbon formation. Three solutions are discussed: the use of noble metal catalysts,
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