This paper presents a method of simple and multiple water fuel emulsions preparation in a liquid-liquid contactor with Couette-Taylor flow (CTF contactor). This method concerns the integration of the CTF contactor with diesel engines for the injection of just-prepared emulsions. Stable simple O/W and multiple O/W/O emulsions, both with quite narrow drop size distribution, have been prepared. Th...

Extraction of heavy metals in membrane contactors was investigated theoretically in this study. Extraction of Cu2+ with a kerosene solution of di(2-ethylhexyl) phosphoric acid (D2EHPA) was studied. Simulations were performed using computational fluid dynamics of mass and momentum transfer in all subdomains of a circular membrane contactor. The membrane contactor consists of three sections: lume...

In this study, hydrogen was recovered and purified by using a membrane contactor unit from CO2-rich gas without the use of any basic chemicals such as amines. The operational parameters were adjusted to achieve high CO2 removal H2 recovery. effects flow rate, pressure, composition (CO2/H2 ratio), pressure difference between liquid gas, gas/liquid ratio on recovery investigated. Depending contac...

This work aims to intensify trans-p-coumaric acid (p-CA) heterologous production. p-CA exhibits antimicrobial properties, low hydrosolubility, and retro-inhibition activity, making its production limited due accumulation in the broth. To overcome these limitations, an in-stream product recovery process (ISPR) is proposed consists a liquid-liquid extraction assisted by hollow fiber membrane cont...

Abstract In this study, a mathematical model is proposed for CO2 separation from N2/CO2 mixtureusing a hollow fiber membrane contactor by various absorbents. The contactor assumed as non-wetted membrane; radial and axial diffusions were also considered in the model development. The governing equations of the model are solved via the finite...

Absorption of CO2 from a gas mixture containing CO2 and nitrogen by water-based CNT nanofluids in gas–liquid hollow fiber membrane contactor was modeled and solved using COMSOL Multiphysics 5.4. The model assumed partial wetting of the membrane, along with diffusion in the axial and radial directions. In addition, Brownian motion and grazing effects were both considered in the model. The main c...

Introduction: Removal of ammonia from water of a waste water treatment plant by a membrane contactor were simulated on transient state and compared with experimental data. This technology will be applied in the hydrogen and oxygen production by electrolysis via renewable energies as can be seen in Figure 1. The aim of this study relies on fulfill the process requirements in the electrolysis, si...