Enhancement in the production of high purity hydrogen (H2) from synthesis gas, obtained by coal gasification, is limited by the thermodynamics of the water-gas shift reaction (WGSR). However, this constraint can be overcome by concurrent WGSR and carbonation (of calcium oxide) reaction to enhance H2 production. The carbonation of calcium oxide forming calcium carbonate incessantly drives the eq...

The need for high purity hydrogen for use in lowtemperature fuel cells has led to a resurgence of interest in the purification of hydrogen derived from reforming carbon -based feedstocks. A common process used to reduce the carbon monoxide concentration of the reformate gas to an acceptable level is the water gas shift reaction (WGSR). In the reaction, carbon monoxide is combined with water to ...

BACKGROUND Citrobacter amalonaticus Y19 is a good biocatalyst for production of hydrogen (H2) from oxidation of carbon monoxide (CO) via the so-called water-gas-shift reaction (WGSR). It has a high H2-production activity (23.83 mmol H2 g-1 cell h-1) from CO, and can grow well to a high density on various sugars. However, its H2-production activity is expressed only when CO is present as an indu...

The high calorific value of rice husk and rich silica content in ash make its valorization becomes attractive. This study presents the thermodynamics simulation performance combustion using a realistic decomposition approach. A non-ideal gas approach fugacity coefficient were also considered calculation. In this study, devolatilization is simulated to form (64.78%), liquid/tar (7.28%), solid/ch...

A scale-up study has been performed with three different size reactors to establish the optimum operating conditions for the hydrogen production from synthesis gas by biological water-gas shift reaction using the photosynthetic bacterium Rhodosprilliunt rubrum. Optimum medium composition and operating conditions previously determined in a bench scale 1.25 L continuous stirred tank reactor (CSTR...

in this work the kinetic data demanded for kinetic modeling were obtained in temperatures 350, 400, 450 and 500 oc by conducting experimentations on a fe-cr nanocatalyst prepared from a novel method and a commercial fe-cr-cu one. the collected data were subjected to kinetic modeling by using two models derived from redox and associative mechanisms as well as an empirical one. the coefficients o...

Abstract The kinetic patterns of the attainment equilibrium product composition in non-catalytic processes partial oxidation and steam carbon dioxide reforming hydrocarbons temperature range 1400–1800 K, characteristic these processes, were analyzed. need for such analysis is caused by rapidly increasing consumption natural gas as a chemical feedstock growing attention to environmental problems...