The coupling of reactions in catalytic membrane reactors provides novel reactor configurations that allow shifting the thermodynamic equilibrium and yields of thermodynamically limited reactions and enhancing significantly the rate of production. An interesting pair to couple is the dehydrogenation of ethylbenzene to styrene and the hydrogenation of nitrobenzene to aniline. Hydrogen produced in...

The application of the expanded granular sludge bed (EGSB) reactor for the anaerobic treatment of low-strength soluble wastewaters using ethanol as a model substrate was investigated in laboratory-scale reactors at 30oC. Chemical oxygen demand (COD) removal efficiency was above 80% at organic loading rates up to12 g COD/L . d with influent concentrations as low as 100 to 200 mg COD/L. These res...

Three-Phase Fluidized Beds have found an important place in processing technology as Reactors. Gas-Liquid-Solid fluidization is considered in the present paper as operating bed of fluidized solid particles simultaneously with co-current upward flow of a continuous liquid phase and a gaseous phase dispersed in the form of bubbles. In the present study, the experimental work of the author on heat...

Carbon nanofibers have been immobilized onto carbon felt as the first step for their industrial application in Oxidative DeHydrogenation (ODH) reactions, exhibiting a stable performance with a high selectivity to styrene in the ODH of ethyl benzene at temperatures around 300 K lower than the actual industrial process, and inhibiting the problem that loose small particle as CNFs shows for being ...

Ethylene production via oxidative coupling of methane (OCM) in adiabatic packed-bed reactors is a promising route within the context natural gas valorization. However, high exothermicity OCM imposes low inlet temperatures and, hence, space-time yields. Layered-bed are proposed present work as potential alternative to mitigate this issue. In modeling investigation, first layer active Sr/La2O3 ca...

A generalized nonlinear mathematical model for fixed-bed tubular chemical reactors with cooling is proposed. The model is suitable for simulation experiments. A strategy, focused on simplifying and adapting the "primary" model to control applications is shown. This procedure is driven through the so-called "pseudohomogeneous" form of the model until a final description which is linear and relat...

Palladium-based membranes for hydrogen separation have been studied by several research groups during the last 40 years. Much effort has been dedicated to improving the hydrogen flux of these membranes employing different alloys, supports, deposition/production techniques, etc. High flux and cheap membranes, yet stable at different operating conditions are required for their exploitation at ind...

Residue catalytic hydrogenation was carried out in a two-stage downflow fixed-bed reactor system, with HDM catalyst the first stage and HDS second one, to mimic industrial operation. The experiments were run at five sets of temperatures (395 °C (first reactor)/405 (second reactor), 400 °C/410 °C, 405 °C/415 410 °C/420 420 °C/430 °C). It found that initial deactivation mainly caused by rapid dep...

The aim of the present study was to assess the impact of adding cultures of Thiobacillus denitrificans and Thiomicrospira denitrificans to two upflow anaerobic sludge bed (UASB) reactors: one inoculated with granular sludge and the other filled only with activated carbon (AC). The performances of the bioreactors and the changes in biomass were compared with a non-bioaugmented control UASB react...