9, July 2026

INVESTIGATIONS OF GAS HOLD UP IN BAFFLED REVERSED FLOW JET LOOP REACTOR

VOLUME-12; ISSUE-7; JULY-2026

Author(s): 1. Manishkumar A. Patil, 2. Pradip J. Patil

Authors Affiliations:

1,2 Department of chemical engineering, TKIET,Warananagar,India

DOIs:10.2015/IJIRMF/202607001     |     Paper ID: IJIRMF202607001


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Gas–liquid contactors play an essential role in numerous chemical, biochemical, petrochemical, and environmental processes because of their ability to enhance mass transfer between phases. Among these contactors, the Baffled Reversed Flow Jet Loop Reactor (BRFJLR) offers superior gas dispersion, higher turbulence, improved liquid circulation, and enhanced gas residence time compared to conventional bubble columns and jet loop reactors. In the present study, the hydrodynamic behavior of a BRFJLR was investigated by evaluating gas holdup, which is one of the most important parameters governing reactor performance and mass transfer efficiency. Experimental investigations were carried out using a gas–liquid two-phase system comprising compressed air as the gas phase and aqueous solutions .The effects of gas flow rate, liquid flow rate, nozzle diameter, nozzle immersion height, nozzle position (concentric and eccentric), alcohol concentration, and liquid properties on gas holdup were systematically examined. Gas holdup was determined experimentally by measuring the reduction in liquid height after stopping the gas and liquid supply under steady-state operating conditions. The results demonstrated that gas holdup increased with increasing gas flow rate, liquid flow rate, alcohol concentration, and nozzle immersion height. The smaller nozzle diameter (18.7 mm) produced higher gas holdup than the larger nozzle because of increased jet velocity and improved gas dispersion. Furthermore, the concentric nozzle arrangement provided higher gas holdup than the eccentric arrangement due to more uniform flow circulation. Among the investigated liquids, n-butanol exhibited the maximum gas holdup, particularly at higher concentrations and operating flow rates, owing to its higher viscosity and favorable hydrodynamic characteristics. The findings indicate that the baffled reversed flow jet loop reactor provides efficient gas–liquid contact and can be effectively employed in biochemical reactors, fermentation systems, wastewater treatment processes, and other industrial applications requiring enhanced mass transfer. 
Baffled Reversed Flow Jet Loop Reactor (BRFJLR); Gas Holdup; Gas–Liquid Hydrodynamics; Jet Loop Reactor; Draft Tube Reactor; Air–Liquid Two-Phase Flow; Nozzle Diameter; Nozzle Immersion Height.

Manishkumar A. Patil, Pradip J. Patil (2026); INVESTIGATIONS OF GAS HOLD UP IN BAFFLED REVERSED FLOW JET LOOP REACTOR, International Journal for Innovative Research in Multidisciplinary Field, ISSN(O): 2455-0620, Vol-12, Issue-7, Available on –   https://www.ijirmf.com/

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