Co-processing of formic acid or carbon dioxide with CH4 (FA/CH4 = 0.01-0.03 and CO2/CH4 = 0.01-0.03) on Mo/H-ZSM-5 catalysts at 950 K with the prospect of kinetically coupling dehydrogenation and deoxygenation cycles results instead in a two-zone, staged bed reactor configuration consisting of upstream oxygenate/CH4 reforming and downstream CH4 dehydroaromatization. The addition of an oxygenate...

The effect of draining crop fields during the wheat season on the soil CH4 andN2O emissions during the rice season in this article. There were four treatments:traditional cultivation during the wheat season + cultivation without fertilizationduring the rice season (CK1 field), traditional cultivation during the wheat season +traditional cultivation during the rice season (CK2 field), draining t...

Thirty-five available feeds were fermented in vitro in order to investigate their soluble total organic carbon (TOCs) and methane (CH4) production rate. A fermentation reactor was designed to capture the CH4 gas emitted and to collect liquor from the reactor during in vitro fermentation. The results showed that CH4 production rate greatly varied among feeds with different ingredients. The lowes...

This study compares the CH4 fluxes from two arctic wetland sites of different annual temperatures during 2004 to 2006. The PEATLAND-VU model was used to simulate the emissions. The CH4 module of PEATLANDVU is based on the Walter-Heimann model. The first site is located in northeast Siberia, Indigirka lowlands, Kytalyk reserve (70 N, 147 E) in a continuous permafrost region with mean annual temp...

mil-53-cu has been synthesized hydrothermally and has been used for the first time for gas separation. mil-53-cu shows adsorption capacities of 8.1, 0.7 and 0.5 m.mol/g, respectively, for ch4, co2 and h2 at 30 bar and 298 k. the high ch4 adsorption capacity of mil-53-cu maybe attributed to the high pore volume and large number of open metal sites. the high selectivity for ch4 over co2 (11.5) an...

Lakes are important components of the global methane (CH4) cycle. In seasonally ice-covered lakes, CH4 transported by ebullition (bubbling) from anoxic sediments gets trapped at the water-ice interface. If not oxidized by methane-oxidizing bacteria (MOB), this can potentially lead to high episodic CH4 emissions at icemelt. To understand the fate of CH4 trapped below ice, we measured depth-distr...

background: iran is located in the seventh rank in terms of co2 emissions resulting from the fuel combustion in the world. gas compressor booster stations, due to the several sources of contaminants, are causing the release of large amounts of co2 and ch4, which will cause climate change therefore, estimating the emissions of the gases from oil and gas, different processing units are necessary....

Climate warming is expected to accelerate peatland degradation and release rates of carbon dioxide (CO2) methane (CH4). Spruce Peatlands Responses Under Changing Environments an ecosystem-scale climate manipulation experiment, designed examine ecosystem response forcings. We examined whether heating up +9 °C 3 m-deep in a peat bog over 7-year period led higher C turnover CO2 CH4 emissions, by m...

Serpentinization is a natural process that transforms ferromagnesian minerals such as olivine into serpentine and produces waters at very high pH gases enriched in methane (CH4) hydrogen (H2). We report the composition of venting two springs (Bain des Japonais Rivière Kaoris) serpentinizing environment Prony Bay (New Caledonia) collected eight times between 2011 2014, along with situ measuremen...

Freshwater lakes are increasingly recognized as significant sources of atmospheric methane (CH4), potentially offsetting the terrestrial carbon sink. We present first study dissolved CH4 distributions and lake-air flux from Lake Winnipeg, based on two-years observations collected during all seasons. Methane concentrations across two years had a median value 24.6 nmol L-1 (mean: 41.6 ± 68.2 L-1)...