Electrochemical Mass Transfer Measurements of CO₂ in MDEA Solutions

Abstract:

The mass transfer coefficients at different axial positions in a bubble column have been measured using a conductivity method. Measurements of CO2 absorption in methyldiethanolamine solutions were carried out in a prismatic column 0.06 m side and 1.03 m height. Five electrode pairs were placed at various axial positions in the column. Measurements were conducted at different gas flow rates and amine concentration. It was found that the local mass transfer varied in the axial direction. An experimental model was developed to obtain the absorption rate values using the electrochemical method data. The model agrees quite well with the experimental obtained data.

• Periodical: Defect and Diffusion Forum (Volumes 312-315)
• Pages: 87-92
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.312-315.87
• Online since: April 2011
• Authors: Rocío Maceiras, Xosé R. Nóvoa, Angeles Cancela, Estrella Álvarez
• Keywords: Absorption, Bubble Column, Carbon Dioxide CO₂, Electrochemical Method, Mass Transfer Coefficient, Methyldiethanolamine

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