The goal of this study is to investigate the performance of a pilot-scale trickle-bed air biofilter (TBAB) for treating volatile organic compounds (VOCs) emitted from a manufacturer of optoelectronic apparatus. Different empty-bed residence times (EBRTs) of 90, 60, 30, 20 and 15 s were evaluated. Greater than 90% VOC removal efficiencies were achieved at EBRTs longer than 20 s. EBRTs of 20-30s ...

Direct non-oxidative methane conversion (DNMC) is one of the most promising options to convert (CH4) in natural gas remote extraction sites liquid aromatics, which easier transport compared CH4 gas. The main constraint DNMC low conversion, and thus aromatics product yield due thermodynamic limitation. This work reports a recycle reactor/hydrogen (H2) membrane separator achieve high by circumven...

A flow process for Pd-catalyzed carbon fluorine bond formation is described. A microreactor using a packed-bed design allows for easy handling of large quantities of insoluble CsF with precise control over reaction times, efficient mixing, and the ability to safely handle elevated temperatures and pressures. A variety of aryl triflates, including heteroaryl ones, were converted to their corresp...

This paper reported an experimental research of steady-state heat transfer behaviour of a gas flowing through a fixed bed under the different operating conditions. Studies had been carried out in a fixed-bed packed methanol synthesis catalyst percolated by air at appropriate flow rate. Both radial and axial direction temperature distribution had been investigated under the different operating c...

Traveling-Wave Microwave Reactor (TMR) presents a novel heterogeneous catalytic reactor concept based on coaxial waveguide structure. In the current paper, both modeling and experimental studies of catalyst heating in TMR are presented. The developed 3D multiphysics model was validated from electromagnetic heat transfer points view. Extrudes silicon carbide (SiC) were selected as supports micro...

Abstract--Following Trinh and Ramkrishna (1996a, Chem. Engng Sci., in press), spatial patterns due to steady-state multiplicity in catalyst particles in a packed-bed catalytic reactor is investigated further under isothermal conditions. In this work, axial dispersion is included in the fluid phase while the assumption of lumped resistance to transport (within the particles) at the particle surf...

Multiphase catalytic reactions are prominent in chemical engineering; however it is difficult to achieve efficient reactions. Computational fluid dynamics (CFD) software simulates fluid flow so interactions between phases may be analyzed and improved. This project included use of CFD to simulate an experiment on multiphase flow to compare results on flow regime and pressure drop. Results includ...

A tubular pilot scale fixed-bed reactor for the Fischer–Tropsch Synthesis (FTS) was simulated to numerically demonstrate the conversion of synthesis gas (CO+H2) to higher hydrocarbons over an iron based catalyst. The reactor was a 3.1 cm diameter and 2.75 m length steel tube. The feed temperature were between 563583 K. Saturated water was employed to control the peak temperature within the cata...

The Rayon grade pulp (RGP) drain effluent of pulp and paper mill was studied to find out pollutant loading and its control measures by low cost and efficient treatment method. Upflow anaerobic fixed packed bed reactor (UAFPBR) with brick ballasts as packing material was used for this purpose. This was compared with conventional anaerobic treatment method. The digested slurry was taken as inocul...