Site-specific methane (CH4) and ethane (C2H6) emission rates from the onshore oil gas (O&G) sector in Romania were quantified, using mobile tracer dispersion method. As part of coordinated Romanian Methane Emission Oil & Gas measurement campaign, this study supported investigation CH4 emissions O&G around Bucharest. measured at 200 sites highly skewed with a heavy tail described by ...

Anthropogenic greenhouse gas emissions have caused changes to the Earth’s climate, resulting in catastrophic weather events that are becoming more frequent and intense. Developing carbon-neutral processes for CO2 conversion powered by renewable energy is one way of attaining a circular economy, as waste converted new carbon-containing product, without also being created by-product during proces...

Measurements of the vertical and latitudinal variations of temperature and C2H2 and C2H6 abundances in the stratosphere of Saturn can be used as stringent constraints on seasonal climate models, photochemical models, and dynamics. The summertime photochemical loss timescale for C2H6 in Saturn’s middle and lower stratosphere (∼40–10,000 years, depending on altitude and latitude) is much greater ...

The current work focused on the sunlight-driven thermo-photocatalytic reduction of carbon dioxide (CO2), primary greenhouse gas, by ethane (C2H6), second most abundant element in shale aiming at generation ethanol (EtOH), a renewable fuel. To promote this process, hybrid catalyst was prepared and properly characterized, comprising strontium titanate (SrTiO3) co-doped with ruthenium oxide (RuO2)...

Nitrogenase-3 of Azotobacter vinelandii is synthesized under conditions of molybdenum and vanadium deficiency. The minimal metal requirement for its synthesis, and its metal content, indicated that the only transition metal in nitrogenase-3 was iron [Chisnell, Premakumar and Bishop (1988) J. Bacteriol. 170, 27-33; Pau, Mitchenall and Robson (1989) J. Bacteriol. 171, 124-129]. A new species of n...

Urban areas are increasingly recognized as a globally important source of methane to the atmosphere; however, the location of methane sources and relative contributions of source sectors are not well known. Recent atmospheric measurements in Los Angeles, California, USA, show that more than a third of the city’s methane emissions are unaccounted for in inventories and suggest that fugitive foss...

The presence of specific hydrocarbon gas molecules in various types of water cavities in natural gas hydrates (NGHs) are governed by the relative stabilities of these encapsulated guest molecule-water cavity combinations. Using molecular quantum chemical dispersion-corrected hybrid density functional computations, the interaction (ΔE(host--guest)) and cohesive energies (ΔE(coh)), enthalpies, an...

The oxidative coupling of methane (OCM) to C2 hydrocarbons (C2H4 and C2H6) has aroused worldwide interest over the past decade due rise vast new shale gas resources. However, obtaining higher selectivity can be very challenging in a typical OCM process presence easily oxidized products such as C2H4 C2H6. Regarding this, different types catalysts have been studied achieve desirable yields. In th...