in the present study, a heterogeneous and homogeneous gas flow dispersion model for simulation and optimization of a large-scale catalytic slurry reactor for the direct synthesis of dimethyl ether (dme) from synthesis gas (syngas) and co2, using a churn-turbulent regime was developed. in the heterogeneous flow model, the gas phase was distributed into two bubble phases including small and large...

This research aimed to evaluate the effectiveness of various diffusers in a bioreactor for producing liquid organic fertilizer (LOF) using cow urine and slurry waste as materials. LOF was produced by treating with Urine-Single Orifice Diffuser (USOD), Urine-Coarse Bubble (UCBD), Urine-Fine (UFBD), Slurry-Single (SSOD), Slurry-Coarse (SCBD), Slurry-Fine (SFBD) equipped water pump an external aer...

Experiments were performed in a three-phase bubble column to study variations of bubble rise velocities. The dynamic gas disengagement (DGD) technique and the fast response pressure transducers were utilized to investigate the bubble rise in the column. The superficial gas velocity of large bubbles and small bubbles, the rise velocities of larger and small bubble fractions were studied consider...

In the present study, a heterogeneous and homogeneous gas flow dispersion model for simulation and optimization of a large-scale catalytic slurry reactor for the direct synthesis of dimethyl ether (DME) from synthesis gas (syngas) and CO2, using a churn-turbulent regime was developed. In the heterogeneous flow model, the gas phase was distributed into two bubble phases including small and large...

An experimental study has been carried out to characterize bubble formation, growth, and detachment mechanisms in a stagnant liquid column. Both bubble frequency and bubble detachment size were measured in different gas flow rates, injector diameters and orientations, submergence height, and liquid properties. Experiments were performed for air injection flow rate ranges between 200 mlph and 12...

Pig slurry was used as the sole nutrient source to produce biomass of microalga Scenedesmus almeriensis using laboratory-scale bubble column photobioreactors. No differences in terms productivity were observed between fresh and digested pig slurry. The optimum dilution enable processing largest amount per litre 5%, which led a rate 0.68 g·L−1·day−1, comparable that standard growth medium formul...

fertilizer plant waste carbon slurry has been investigated after some processing as an adsorbent for the removal of dyes and phenols using columns. the results show that the carbonaceous adsorbent prepared from carbon slurry being porous and having appreciable surface area (380 m2/g) can remove dyes both cationic (meldola blue, methylene blue, chrysoidine g, crystal violet) as well as anionic (...