Hydrogen emissions from the hydrogen value chain-emissions profile and impact to global warming.

Future energy systems could rely on hydrogen (H) to achieve decarbonisation and net-zero goals. In a similar energy landscape to natural gas, H emissions occur along the supply chain. It has been studied how current gas infrastructure can support H, but there is little known about how H emissions affect global warming as an indirect greenhouse gas.

Carbon isotopic characterisation and oxidation of UK landfill methane emissions by atmospheric measurements.

Biological oxidation of methane in landfill cover material can be calculated from the carbon isotopic signature (δC) of emitted CH Enhanced microbial consumption of methane in the aerobic portion of the landfill cover is indicated by a shift to heavier (less depleted) isotopic values in the residual methane emitted to air. This study was conducted at four landfill sites in southwest England. Measurement of CH using a mobile vehicle mounted instrument at the four sites was coupled with Flexfoil bag sampling of ambient air for high-precision isotope analysis.

Effect of superfine pulverization of powdered activated carbon on adsorption of carbamazepine in natural source waters.

The purpose of this study is to investigate adsorptive removal of carbamazepine from natural source waters by superfine pulverized powdered activated carbon. Superfine pulverization is becoming an increasingly attractive approach to decrease the diffusion path of a target adsorbate molecule and improve the overall the kinetics of activated carbon adsorption. Here we report the impact of pulverization on powdered activated carbon characteristics, and carbamazepine adsorption behavior in distilled and deionized water and natural organic matter solutions.

Quantification of methane emissions from UK biogas plants.

The rising number of operational biogas plants in the UK brings a new emissions category to consider for methane monitoring, quantification and reduction. Minimising methane losses from biogas plants to the atmosphere is critical not only because of their contribution of methane to global warming but also with respect to the sustainability of renewable energy production. Mobile greenhouse gas surveys were conducted to detect plumes of methane emissions from the biogas plants in southern England that varied in their size, waste feed input materials and biogas utilization.