Hollow Fibers with Encapsulated Green Amino Acid-Based Ionic Liquids for Dehydration
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Embargo End Date:
2021-11-18
Type
ArticleAuthors
Gebreyohannes, Abaynesh Yihdego
Upadhyaya, Lakshmeesha
Silva, Liliana P.

Falca, Gheorghe
Carvalho, Pedro J.

Nunes, Suzana Pereira

KAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Date
2020-11-18Embargo End Date
2021-11-18Submitted Date
2020-08-15Permanent link to this record
http://hdl.handle.net/10754/666071
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Dehydration technologies with low energy consumption using non-toxic materials are important in industrial, residential, and transport applications. Herein, nanocomposite polymeric hollow fibers with high dehydration capability were demonstrated with the incorporation of green amino acid-based ionic liquids. The ionic liquid was encapsulated in designed submicrometer carbon capsules (ENILs) and dispersed in thin polydimethylsiloxane (PDMS) coating layers. The effect of different coating compositions and operation conditions on the water vapor permeance and selectivity of water vapor over nitrogen was investigated using vacuum and sweep gas. Both sorption and permeation results suggested strong interactions between the water vapor and the encapsulated ionic liquid. The selectivity greatly depends on the PDMS coating and the amount of loaded ENIL. A linear increase of the water vapor over nitrogen selectivity was observed up to 50% ENIL loading in PDMS. The membrane systems had water vapor permeance up to 10,600 GPU and selectivity of 4500, which are promising characteristics for application in membrane air dehumidification and other dehydration processesCitation
Gebreyohannes, A. Y., Upadhyaya, L., Silva, L. P., Falca, G., Carvalho, P. J., & Nunes, S. P. (2020). Hollow Fibers with Encapsulated Green Amino Acid-Based Ionic Liquids for Dehydration. ACS Sustainable Chemistry & Engineering. doi:10.1021/acssuschemeng.0c06001Publisher
American Chemical Society (ACS)Additional Links
https://pubs.acs.org/doi/10.1021/acssuschemeng.0c06001ae974a485f413a2113503eed53cd6c53
10.1021/acssuschemeng.0c06001