To improve the energy efficiency of an industrial process thermochemical storage (TCES) can be used to store excess or typically wasted thermal for utilisation later. Magnesium carbonate (MgCO3) has a turning temperature 396 °C, theoretical potential 1387 J/g and is low cost (~GBP 400/1000 kg). Research studies that assess MgCO3 use as medium TCES material are lacking, and, given its potential,...

The kinetics of nitromethane, nitroethane and 1-nitropropane decomposition and oxidation in supercritical water near the critical point has been studied in a flow reactor. The reaction rate constants have been calculated on the assumption of the first order reaction. The pressure varied over a wide range produced strong effect on the rate of the nitrocompounds decomposition in supercritical wat...

The adsorption and dissociation of water on mackinawite (layered FeS) surfaces were studied using dispersion-corrected density functional theory (DFT-D2) calculations. The catalytically active sites for H2O and its dissociated products on the FeS {001}, {011}, {100}, and {111} surfaces were determined, and the reaction energetics and kinetics of water dissociation were calculated using the clim...

We investigate the coupled effects of mineralogy and pressure on the dynamics of axisymmetric thermochemical plumes in the lower mantle, using both high resolution numerical experiments and simple analytical theory. We focus on the effect of composition on the compressibility which has not been studied before. Our results show that the effect of mineralogy is considerable: For relatively low Si...

Macrophyte decomposition is important for carbon and nutrient cycling in lake ecosystems. Currently, little is known about how this process responds to detritus quality and water nutrient conditions in eutrophic shallow lakes in which incomplete decomposition of detritus accelerates the lake terrestrialization process. In this study, we investigated the effects of detritus quality and water nut...

Thermochemical technologies (TCT) enable the promotion of sustainability and operation energy systems, as well in industrial sites. The thermochemical operations can be applied for storage recovery (alternative fuel production from water/wastewater, particular green hydrogen). TCTs are proven to have a higher density long-term compared standard thermal (sensible latent). Nonetheless, these requ...

Bioenergy will be one component of a suite of alternatives to fossil fuels. Effective conversion of biomass to energy will require the careful pairing of advanced conversion technologies with biomass feedstocks optimized for the purpose. Lignocellulosic biomass can be converted to useful energy products via two distinct pathways: enzymatic or thermochemical conversion. The thermochemical pathwa...