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Fletta eftir efnisorði "Koltvíoxíð"

Fletta eftir efnisorði "Koltvíoxíð"

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    Calculations of Product Selectivity in Electrochemical CO2 Reduction 
    Hussain, Javed; Jónsson, Hannes; Skulason, Egill (American Chemical Society (ACS), 2018-04-23)
    CO2 can be reduced electrochemically to form valuable chemicals such as hydrocarbons and alcohols using copper electrodes, whereas the other metal electrodes tested so far mainly form CO or formate, or only the side product, H2. Accurate modeling of ...
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    CarbFix2: CO2 and H2S mineralization during 3.5 years of continuous injection into basaltic rocks at more than 250 °C 
    Clark, Deirdre; Oelkers, Eric H.; Gunnarsson, Ingvi; Sigfússon, Bergur; Snæbjörnsdóttir, Sandra Ósk; Aradóttir, Edda S.; Gíslason, Sigurður Reynir (Elsevier BV, 2020-06)
    The CarbFix method was upscaled at the Hellisheiði geothermal power plant to inject and mineralize the plant’s CO2 and H2S emissions in June 2014. This approach first captures the gases by their dissolution in water, and the resulting gas-charged water ...
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    The chemistry and potential reactivity of the CO2-H2S charged injected waters at the basaltic CarbFix2 site, Iceland 
    Clark, Deirdre; Gunnarsson, Ingvi; Aradóttir, Edda S.; Arnarson, Magnús Þ.; Þorgeirsson, Þorsteinn A.; Sigurðardóttir, Sigrún S.; Sigfússon, Bergur; Snæbjörnsdóttir, Sandra Ósk; Oelkers, Eric H.; Gíslason, Sigurður Reynir (Elsevier BV, 2018-07)
    The CarbFix2 project aims to capture and store the CO2 and H2S emissions from the Hellisheiði geothermal power plant in Iceland by underground mineral storage. The gas mixture is captured directly by its dissolution into water at elevated pressure. ...
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    CO2 content beneath northern Iceland and the variability of mantle carbon 
    Hauri, Erik H.; Maclennan, J.; McKenzie, D.; Gronvold, K.; Óskarsson, N.; Shimizu, N. (Geological Society of America, 2017-11-16)
    Primitive basalt melt inclusions from Borgarhraun, northern Iceland, display large correlated variations in CO2 and nonvolatile incompatible trace elements (ITEs) such as Nb, Th, Rb, and Ba. The average CO2/ITE ratios of the Borgarhraun melt inclusion ...
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    A comparative study of life cycle carbon emissions and embodied energy between sun-dried bricks and fired clay bricks 
    Dabaieh, Marwa; Heinonen, Jukka; El-Mahdy, Deena; Hassan, Dalya M. (Elsevier BV, 2020-12-01)
    This study presents a comparison of the life cycle carbon emission (LCCO2) and embodied energy calculation between two kinds of bricks, sun-dried and fired clay, as means of evaluating the energy and climate impact of each brick type and the economics ...
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    Effect of Coronavirus Disease 2019 on CO2 Emission in the World 
    Safarian, Sahar; Unnthorsson, Runar; Richter, Christiaan (Taiwan Association for Aerosol Research, 2020-05)
    In order to decrease spreading of Coronavirus disease 2019 (COVID-19) over the world, the activity of many industries has declined, several flights were cancelled and so many people staying home that made drop in fuel consumption in road transport. ...
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    The effect of the 2014-15 Bárðarbunga volcanic eruption on chemical denudation rates and the CO2 budget 
    Galeczka, Iwona; Oelkers, Eric H.; Gíslason, Sigurður Reynir (Elsevier BV, 2018-07)
    Chemical denudation rates during the 2014–15 Bárðarbunga eruption, calculated using river chemical fluxes, increased substantially confirming that volcanic activity and its products such as fresh lava, and acidic volatiles accelerates these rates. ...
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    Experimental observations of CO2-water-basaltic glass interaction in a large column reactor experiment at 50 °C 
    Clark, Deirdre; Galeczka, Iwona M.; Dideriksen, Knud; Voigt, Martin J.; Wolff-Boenisch, Domenik; Gíslason, Sigurður Reynir (Elsevier BV, 2019-10)
    Mineralization of water dissolved carbon dioxide injected into basaltic rocks occurs within two years in field-scale settings. Here we present the results from a CO2-water-basaltic glass laboratory experiment conducted at 50 °C and 80 bar pressure in ...
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    Sugar-stimulated CO2 sequestration by the green microalga Chlorella vulgaris 
    Fu, Weiqi; Guðmundsson, Steinn; Wichuk, Kristine; Palsson, Sirus; Pálsson, Bernhard Ö; Salehi-Ashtiani, Kourosh; Brynjolfsson, Sigurdur (Elsevier BV, 2019-03)
    To convert waste CO2 from flue gases of power plants into value-added products, bio-mitigation technologies show promise. In this study, we cultivated a fast-growing species of green microalgae, Chlorella vulgaris, in different sizes of photobioreactors ...
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    Why do RuO2 electrodes catalyze electrochemical CO2 reduction to methanol rather than methane or perhaps neither of those? 
    Tayyebi, Ebrahim; Hussain, Javed; Skulason, Egill (Royal Society of Chemistry (RSC), 2020-09-21)
    The electrochemical CO2reduction reaction (CO2RR) on RuO2and RuO2-based electrodes has been shown experimentally to produce high yields of methanol, formic acid and/or hydrogen while methane formation is not detected. This CO2RR selectivity on RuO2is ...