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<p>Liquid-liquid flow through milli-meter-sized channels inducing slug is one of the most popular process intensification techniques. Milli-meter-sized channel marks the transition between the macro and micro domains where inertial and surface forces are important. Slug flow which occurs during flow in millichannels is known to be a tool for process intensification owing to its unique characteristics of dual transport mechanism of convection and diffusion. In this study, a model liquid-liquid system (toluene-acetic acid-water) has been selected for performing mass transfer and flow pattern studies. Nowadays agrowaste-based nanomaterials are preferred over metal-based ones owing to their unique sustainable feature. The efficacy of activated carbon nanoparticles from coconut shells and nanocellulose from rice straw for mass transfer applications has been presented in this work. The range of slug flow along with mass transfer is higher in cases where nanomaterials are mixed with the water phase. A detailed hydrodynamics and mass transfer study has been performed in straight millichannels of 2&#xa0;mm ID. An unprecedented enhancement of 65% mass transfer has been noticed for the water phase containing dispersed nanocellulose.</p>

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A Sustainable Route of Mass Transfer for Liquid-Liquid Flow in Millimeter-Sized Conduit: Unearthing the Potential of Agrowaste-Derived Nanomaterials

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Abhishek Kumar,
  • Abhijit Anand,
  • Anikesh Tripathi,
  • Pravesh Narain Singh,
  • Utsav Mishra,
  • Debashis Panda,
  • Krishna Deo Prasad Nigam,
  • Koushik Guha Biswas

摘要

Liquid-liquid flow through milli-meter-sized channels inducing slug is one of the most popular process intensification techniques. Milli-meter-sized channel marks the transition between the macro and micro domains where inertial and surface forces are important. Slug flow which occurs during flow in millichannels is known to be a tool for process intensification owing to its unique characteristics of dual transport mechanism of convection and diffusion. In this study, a model liquid-liquid system (toluene-acetic acid-water) has been selected for performing mass transfer and flow pattern studies. Nowadays agrowaste-based nanomaterials are preferred over metal-based ones owing to their unique sustainable feature. The efficacy of activated carbon nanoparticles from coconut shells and nanocellulose from rice straw for mass transfer applications has been presented in this work. The range of slug flow along with mass transfer is higher in cases where nanomaterials are mixed with the water phase. A detailed hydrodynamics and mass transfer study has been performed in straight millichannels of 2 mm ID. An unprecedented enhancement of 65% mass transfer has been noticed for the water phase containing dispersed nanocellulose.