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A Study on the Absorption of Carbon Dioxide using PVDF/Plasma Membrane Contactor  

Choi, Seung-Hak (Korea Research Institute of Chemical Technology)
Gao, Tongzhai (Department of Chemical Engineering, Sun-Moon University)
Oh, Sae-Joong (Department of Chemical Engineering, Sun-Moon University)
Publication Information
Korean Chemical Engineering Research / v.43, no.1, 2005 , pp. 161-169 More about this Journal
Abstract
Numerical simulation and experiments were carried out on the absorption of carbon dioxide using PVDF hollow-fiber membrane contactor. Water or monoethanolamine (MEA) aqueous soluton was used as absorbents. Simulation results showed that the concentration profile of carbon dioxide was less affected by the flow rate of MEA than that of water absorbent. The absorption rate and mass transfer coefficient of carbon dioxide increased as the concentration of MEA increased. The mass transfer coefficients obtained by experiments coincided with those obtained by numerical simulation and theoretical results for $CO_2-water$ system. However, for $CO_2-MEA$ system, the mass transfer coefficients obtained by experiments were lower than those obtained by simulation, while the simulation results agreed well with theoretical results. The durability of plasma-treated hollow fiber membranes was better than that of no plasma-treated ones.
Keywords
Membrane Contactor; PVDF; Carbon Dioxide; Plasma;
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