hydrogen technology is becoming ever more relevant because hydrogen use can help containinggreenhouse gas emission if co2 capture and storage techniques are implemented in the hydrogen productiontechnology (when hydrogen is produced from fossil fuels). for this reason this work aims at carryingout a comparative analysis of possible energy scenarios in urban districts: a medium-small italian cit...

While disasters occur relatively frequently almost none are of a scale as serious or complex the triple disaster that devastated coastal regions Tohoku, Japan. How can region recover from horrific triggered by earthquake, tsunami and radioactive contamination linked to explosions reactor meltdowns at Fukushima Dai-ichi nuclear power plant? Recovery reconstruction in cases large-scale involves m...

BACKGROUND While microbial electrolysis cells (MECs) can simultaneously produce bioelectrochemical hydrogen and treat wastewater, they consume considerable energy to overcome the unfavorable thermodynamics, which is not sustainable and economically feasible in practical applications. This study presents a proof-of-concept system in which hydrogen can be produced in an MEC powered by theoretical...

This study includes determination Montelukast sodium by using flow injection chemiluminescence technique, the optimum concentrations were (150) ppm of magnesum ion, (5×10-4) M luminol, (0.001) hydrogen peroxide, linearity concetraction (0.1-0.001) that give highest luminescence intensity, and correlation cofficient was (0.9054), The relative standard deviation RSD% (2.3) detection limit (0.0001...

ABSTRACT. The effect of acetic acid and ethanol as polar aqueous solvents on sulfuric with hydrogen peroxide an oxidant was studied. A small amount these significantly improved the copper leaching recovery. parameters such temperature, stirring speed, H2O2 concentration, solid/liquid ratio, H2SO4 concentration particle size were examined. About 76.33% highest Cu extraction gained 2 M H2O2, 600 ...

The relaxation of the field ionisation rate after depletion of a tungsten surface is studied for hydrogen and helium with a pulsed laser atom probe. The reduction of the field ion rate and its recovery to a steady state value within some milliseconds is due to a correlation between field ion rate and surface coverage. Three possible models are discussed for explaining the enhancement of the rat...

Flow-Through Catalysts for Diesel Engine Emissions Control Royal Commission Report on Diesel Emissions Chemical Reaction Fronts on Platinum Surfaces Platinum Catalyses the Conversion of Methane to Higher Alkanes Metal-Hydrogen Systems The Plastic Flow of Iridium Ammonia Sensor Uses Platinum Films Partners in Innovation Conference Recovery of Platinum Group Metals from High Level Radioactive Was...

Samples of the activated microporous aluminophosphate Co-APO-5, featuring ca. 20% of Co(3+) cations, when immersed in water evolve molecular oxygen at room temperature in an endothermic process, without the need for either light or a sacrificial reactant. Successive drying of the sample at temperatures around 520 K releases molecular hydrogen, with recovery of the initial conditions. Several hy...

Adaptation to smells is a well-known phenomenon and appears to be one of the major characteristics of olfaction. However, no standardized protocols for the psychophysical measurement of olfactory adaptation and recovery are available to date. Twenty normosmic participants were included. Hydrogen sulfide (H2S) and phenylethyl alcohol were used in different concentrations based on air dilution ol...

Turning organic wastes into hydrogen (H2) by using anaerobic fennentative technology is an ideal concept because this can accomplish both waste treatment and energy recovery objectives. However, H2 production using anaerobic fennentative approaches faces a fundamental limitation of poor H2 production yield (i.e. < 4 mol H2 per mol of hexose). This article gives an overview on the limitations of...