Methane is the second largest contributor to global warming after CO2, and it is hard to abate due to its low concentration in the emission sources and in the atmosphere. However, removing methane from the atmosphere will accelerate achieving net-zero ta
Calculations for the system H2O-CO2-CH4, using the HSMRK equations for H2O and CO2 of Kerrick and Jacobs (1981) and the HSMRK equation for CH4 of this study, indicate that compared to the binary H2O-CO2 system, small amounts of CH4 in the ternary system H2O-CO2-CH4 slightly increases ...
The measured CO2(L/day) production in the respiration chamber was not different(P = 0.39) from the calculated CO2 production using the CO2 T. This result concludes a reasonable accuracy and precision of CH4 estimation by the CO2 T compared with the CO2 R.Md N.HaqueDepartment of Large ...
To investigate the impacts of major factors on carbon loss via gaseous emissions, carbon dioxide (CO2) and methane (CH4) emissions from the ground of open dairy lots were tested by a scale model experiment at various air temperatures (15, 25, and 35 °C), surface velocities (0.4, 0.7, ...
1B). Due to the higher free energy potential and atmospheric concentration of CH4 compared to atmospheric H2 and CO, the energy estimates predict CH4 as the major energy source for all four strains. Our estimates derive from the Gibbs free energy change of the following reactions at atmospheric...
compared to the vegetated habitats, and they became net sources of CO2in summer (157 ± 59 mg CO2 m−2d−1). In photic sediments, ecosystem respiration can quickly outbalance or even outweigh CO2removal via photosynthesis, as photosynthetic activity remains limited to low-biomass ...
CO2 Hydrate: Formation and Dissociation Compared to Methane Hydrate For CO2 disposal in the form of hydrate it is important to know the decomposition kinetics at moderate pressures and temperatures, similar to those that could be realized in the storage systems. This paper has considered the preserv...
2 shows that even for the alkanes the highest value of the CH4/CO2 selectivity is low, being only 0.36 for cyclo-decane and 0.34 for pentane. This means that in the output stream there will be roughly three times more CO2 as compared to CH4. The 10 ILs screened in Figures 1 and 2 ...
In addition, CO2 is depleted in 13C by ∼10 permil compared to ΣCO2 owing to the equilibrium isotope effect. Assimilation of this "light" CO2 by methanogemc archaea and autotrophic SRB, combined with enzymatic isotope effects, could also yield lipid and biomass that are highly depleted in...
Although the problem regarding the development of catalyst, it is found that DRM is better compared to the steam reforming of methane in terms of the environmental impact because CO2 emissions are reduced by approximately 61% (Alkhani, 2022). Due to its advantages, DRM has been suggested for ...