A thermochemical representation of the Na-Al-Si-B-O system relevant for nuclear waste glass has been developed based on the associate species approach for the glass solution phase. Thermochemical data were assessed and associate species data determined for binary and ternary subsystems in the Na2O-Al2O3-B2O3-SiO2 system. Computed binary and ternary phase diagrams were compared to published diag...

The Cu-Cl thermochemical cycle for hydrogen production was selected on the basis of its high efficiency and moderate temperature requirements. The modeling and simulation of Cu-Cl thermochemical cycle for hydrogen production is investigated in Aspen Plus. Since this cycle is a high energy-consuming process, the heat integration technique is implemented to recover the waste heat such that the pr...

The effect of substitution of Al(3+), Ga(3+) and Sc(3+) ions in the Mn(3+) site of La0.5Sr0.5MnO3 on the thermochemical splitting of CO2 to generate CO has been studied in detail. Both La0.5Sr0.5Mn1-xGaxO3 and La0.5Sr0.5Mn1-xScxO3 give high yields of O2 and generate CO more efficiently than La0.5Sr0.5Mn1-xAlxO3 or the parent La0.5Sr0.5MnO3. Substitution of even 5% Sc(3+) (x = 0.05) results in a...

This article reviews various waste decomposition technologies composed of thermochemical and biochemical conversion routes for the generation biohydrogen from biomass wastes. Due to escalation global energy consumptions, concerns on security fuelled increasing processes meet such demands. The development hydrogen has always sustained interest due its immense prospects as a clean source. Instead...

The thermochemical and electrical behavior of ironmaking slag produced from titanomagnetite concentrates has been assessed in the vicinity its tapping temperature. A combination electrochemical measurements a modified thermal imaging furnace computational thermodynamic calculations was employed to elucidate potential use as molten oxide electrolyte for extraction high-purity metal. results show...

In this study, a corrosion-stable silica membrane was developed to be used in H2 purification during the hydrogen iodide decomposition (2HI → + I2), which is new application of membranes. From practical perspective, separation length enlarged up 400 mm and one end tubes closed avoid any thermal variation along sealing issues. The membranes consisted three-layer structure comprising porous α-Al2...