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Related Experiment Video

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Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure

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Volatile organic compounds absorption in a cross-flow rotating packed bed.

Yu-Shao Chen¹, Yi-Chun Hsu, Chia-Chang Lin

¹Department of Chemical Engineering, National Taiwan University, Taipei, 106 Taiwan.

Environmental Science & Technology

|May 29, 2008

Summary

This study evaluated a cross-flow rotating packed bed (RPB) for volatile organic compound (VOC) absorption. The mass transfer coefficient (KGa) improved with higher operational rates, leading to a new empirical correlation.

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Published on: December 10, 2019

Area of Science:

Chemical Engineering
Environmental Engineering
Mass Transfer

Background:

Volatile organic compounds (VOCs) pose environmental and health risks.
Efficient absorption processes are crucial for VOC removal.
Rotating packed beds (RPBs) offer enhanced mass transfer characteristics.

Purpose of the Study:

To evaluate the performance of a cross-flow rotating packed bed (RPB) for absorbing VOCs into water.
To investigate the impact of operational parameters on the mass transfer coefficient (KGa).
To develop and validate an empirical correlation for KGa in a cross-flow RPB.

Main Methods:

Experimental setup utilizing a cross-flow RPB.
Absorption of isopropyl alcohol, acetone, and ethyl acetate into water.
Systematic variation of rotational speed, liquid rate, and gas rate.
Determination of the volumetric mass transfer coefficient (KGa).

Main Results:

The mass transfer coefficient (KGa) increased with increasing rotational speed, liquid rate, and gas rate.
A novel empirical correlation for KGa in a cross-flow RPB was developed.
The proposed correlation accurately estimated experimental data and literature values.
Cross-flow RPB demonstrated potential for higher gas handling capacity compared to countercurrent RPB.

Conclusions:

The cross-flow RPB is an effective system for VOC absorption.
Operational parameters significantly influence mass transfer efficiency.
The developed empirical correlation provides a valuable tool for designing and optimizing cross-flow RPB systems.
Cross-flow RPB offers advantages in handling high gas flow rates for VOC abatement.