Chemical absorption of carbon dioxide with asymmetrically heated polytetrafluoroethylene membranes.

Abstract:

:In this study, the absorption of carbon dioxide using an absorbent composed of 2-amino-2-methyl-L-propanol (AMP) + monoethanolamine (MEA) + piperazine (PZ) in asymmetric and symmetric polytetrafluoroethylene (PTFE) membrane contactors was investigated. Experiments were conducted using various gas flow rates, liquid flow rates, and absorbent blends. CO(2) recovery increased with increasing liquid flow rates. The mean pore size of PTFE membrane reduced via heating treatment. An asymmetric membrane had a better CO(2) recovery than a symmetric membrane. For the asymmetric membrane, placing the smaller pore-size side of the membrane in contact with the liquid phase, reduced the level of wetting of the membrane. The membrane mass transfer coefficient and durability of the PTFE membrane were enhanced by asymmetrically heating.

journal_name

J Environ Manage

authors

Chen SC,Lin SH,Chien RD,Wang YH,Hsiao HC

doi

10.1016/j.jenvman.2010.08.014

subject

Has Abstract

pub_date

2011-04-01 00:00:00

pages

1083-90

issue

4

eissn

0301-4797

issn

1095-8630

pii

S0301-4797(10)00262-8

journal_volume

92

pub_type

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