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Fabrication and characterization of superhydrophobic polypropylene hollow fiber membranes for carbon dioxide absorption
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2012 (Engelska)Ingår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 90, nr 1, s. 167-174Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The membrane wetting by amine absorbents results in performance deterioration of membrane gas absorption system for CO(2) post-combustion capture. To solve this problem, in this study, the polypropylene membrane fiber was modified by depositing a rough layer on the surface to improve its hydrophobicity. Weighing the coating homogeneity, hydrophobicity and modification process efficiency, the mixture of cyclohexanone and MEK system was considered as the best non-solvent. The contact angle increased dramatically from 122 to 158 by the modification, thereby obtaining superhydrophobic membrane surface. The membrane-absorbent interaction results demonstrated that the modification treatment effectively enhanced the stability and maintained the superhydrophobicity of fibers contacting with the absorbent. In addition, continuous CO(2) absorption experiments for up to 20 days were carried out in untreated and modified polypropylene hollow fiber membrane contactors, using 1 mol L(-1) MEA solution as the absorbent. The long-term system operation results indicated that, even though additional mass transfer resistance was introduced by the surface coating, the modified polypropylene hollow fiber membrane contactor was still technically feasible for CO(2) capture from the power stations.

Ort, förlag, år, upplaga, sidor
2012. Vol. 90, nr 1, s. 167-174
Nyckelord [en]
CO(2) capture, Hollow fiber membrane contactors, Partial wetting, Hydrophobic modification
Nationell ämneskategori
Energisystem
Identifikatorer
URN: urn:nbn:se:kth:diva-58806DOI: 10.1016/j.apenergy.2010.12.038ISI: 000297426100026Scopus ID: 2-s2.0-80055031249OAI: oai:DiVA.org:kth-58806DiVA, id: diva2:474636
Anmärkning
QC 20120109Tillgänglig från: 2012-01-09 Skapad: 2012-01-09 Senast uppdaterad: 2017-12-08Bibliografiskt granskad

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Yan, Jinyue
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