background: the modeling aims to simulate or optimize a process in physical, chemical or biological environments and the derived model will provide a considerable assistance to generate data and predict unknown condition, in case of sufficient suitability. unsuitable disposal and elimination of waste tires have polluted the environment and human life areas, it also have caused removal of a huge...

Biological methanation of renewable H2 and CO2 has been projected to have considerable potential in future energy systems by coupling power gas infrastructures. A suitable technology facilitate the biological is ex-situ trickle bed reactor which a methanogenic biofilm produces CH4 from CO2. Biofilm irrigation constitutes critical element for control previously shown both enhance decrease perfor...

.................................................................................................................................................... 1 I – INTRODUCTION .................................................................................................................................... 2 II – BACKGROUND .................................................................................

Acetic acid is an essential industrial building block and can be produced by acetogenic bacteria from molecular hydrogen (H 2 ) carbon dioxide (CO ). When gasses are supplied as substrates, bioreactor design plays important role for their availability. Trickle-bed bioreactors (TBs) have enhanced gas-to-liquid mass transfer cells remain in the system forming a biofilm on carriers. So far, TBs be...

Carbon nanotubes (CNT) supported (10 wt.%) nickel catalysts were evaluated for the hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL) using a trickle-bed reactor at 180 °C and 30 bar. The effect nature precursors salts (NiNIT- Ni(NO3)2.6H2O, NiACET- Ni(CH3COO)2.4H2O) NiHYD- Ni(OH)2) preparation method on distribution Ni particles inside (CNTIN) outside (CNTOUT) carbon investigated. s...

One of the key parameters in Fluidized Bed reactors is the control of biofilm thickness and configuration. The effect of upflow velocity on performance and biofilm characteristics of an Anaerobic Fluidized Bed Reactor was studied in treating Currant wastewater at various loading rates. The reactor used this study was made of a plexiglass column being 60 mm diameter, 140 cm height, and a volume ...