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Preparation of microporous PVDF hollow fiber membrane contactors for CO2 stripping from diethanolamine solution

Naim, Rosma and Ismail, Ahmad Fauzi and Mansourizadeh, Amir (2012) Preparation of microporous PVDF hollow fiber membrane contactors for CO2 stripping from diethanolamine solution. Journal of Membrane Science, 392-93 . pp. 29-37. ISSN 0376-7388

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Official URL: https://www.sciencedirect.com/science/article/pii/...

Abstract

Microporous polyvinylidene fluoride (PVDF) hollow fiber membranes were fabricated via a wet-spinning process. The prepared fibers were characterized in terms of contact angle, gas permeability, wetting pressure and morphology. CO 2 stripping from preloaded aqueous diethanolamine solution was conducted through the gas-liquid membrane contactors. The effects of lithium chloride (LiCl) concentration on the membrane properties and CO 2 stripping performance were investigated. The addition of different LiCl concentration resulted in a less finger-like structure, with highly effective surface porosity and high wetting pressure. Conversely, N 2 permeability, contact angle value and membrane pore size were reduced as the concentration of the additives were increased. For stripping flux performance, membrane with 5wt% LiCl demonstrated the highest flux of 1.61×10 -2mol/m 2s at 110ml/min of the liquid flow rate. It was found that the membrane with less finger-like structure and higher effective surface porosity exhibited higher stripping efficiency. These results suggest that developed membrane structure can be an alternative for the CO 2 stripping through gas-liquid membrane contactors.

Item Type:Article
Uncontrolled Keywords:CO2 stripping, Gas–liquid membrane contactor
Subjects:T Technology > TP Chemical technology
Divisions:Petroleum and Renewable Energy Engineering
ID Code:47408
Deposited By: Fazli Masari
Deposited On:22 Jun 2015 05:56
Last Modified:31 Oct 2018 12:37

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