Theoretical and experimental studies of CO2 absorption by the amine solvent system in parallel-plate membrane contactors

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Title:	Theoretical and experimental studies of CO2 absorption by the amine solvent system in parallel-plate membrane contactors
Authors:	Chii-Dong Ho;Luke Chen;Li-Chen;Jing-Wei Liou;Li-Yang Jen
Keywords:	Carbon dioxide absorption;MEA solvent;Membrane contactor;Mass transfer;Conjugated Graetz problem
Date:	2016-11
Issue Date:	2016-12-17 02:11:10 (UTC+8)
Publisher:	Pergamon Press
Abstract:	The absorption efficiency of CO2 in ethanolamine (MEA) solvent system of a parallel-plate membrane contactor with both concurrent- and countercurrent-flow operations was investigated theoretically and experimentally. A two-dimensional modeling equation for predicting the concentration distribution and total absorption rate was developed, and the analytical solution for the resultant partial differential equations is obtained using the separated variables method with an orthogonal expansion technique. The theoretical predictions of the absorption efficiency, total absorption rate, average Sherwood number and concentration distributions were presented graphically with the mass-transfer Graetz number, inlet CO2 concentration, and both gas feed and absorbent flow rates as parameters.
Relation:	Separation and Purification Technology
DOI:	10.1016/j.seppur.2016.11.070
Appears in Collections:	[Graduate Institute & Department of Water Resources and Environmental Engineering] Journal Article

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