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Title of the item:

Multiblock Copolymer Grafting for Butanol Biofuel Recovery by a Sustainable Membrane Process.

Title :
Multiblock Copolymer Grafting for Butanol Biofuel Recovery by a Sustainable Membrane Process.
Authors :
Vijay Kumar S; Laboratoire de Chimie Physique Macromoleculaire, Université de Lorraine, CNRS UMR 7375 , 1 rue Grandville, BP 20451, 54 001 Nancy Cedex, France.
Arnal-Herault C; Laboratoire de Chimie Physique Macromoleculaire, Université de Lorraine, CNRS UMR 7375 , 1 rue Grandville, BP 20451, 54 001 Nancy Cedex, France.
Wang M; Laboratoire de Chimie Physique Macromoleculaire, Université de Lorraine, CNRS UMR 7375 , 1 rue Grandville, BP 20451, 54 001 Nancy Cedex, France.
Babin J; Laboratoire de Chimie Physique Macromoleculaire, Université de Lorraine, CNRS UMR 7375 , 1 rue Grandville, BP 20451, 54 001 Nancy Cedex, France.
Jonquieres A; Laboratoire de Chimie Physique Macromoleculaire, Université de Lorraine, CNRS UMR 7375 , 1 rue Grandville, BP 20451, 54 001 Nancy Cedex, France.
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Source :
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2016 Jun 29; Vol. 8 (25), pp. 16262-72. Date of Electronic Publication: 2016 Jun 15.
Publication Type :
Journal Article
Language :
English
Imprint Name(s) :
Original Publication: Washington, D.C. : American Chemical Society
Contributed Indexing :
Keywords: biofuel; butanol; grafted copolymer materials; membranes; pervaporation membrane process; structure−property relationships
Entry Date(s) :
Date Created: 20160609 Date Completed: 20180711 Latest Revision: 20180711
Update Code :
20220301
DOI :
10.1021/acsami.6b01900
PMID :
27267173
Academic Journal
Biobutanol is an attractive renewable biofuel mainly obtained by the acetone-butanol-ethanol (ABE) fermentation process. Nevertheless, the alcohol concentration has to be limited to a maximum of 2 wt % in ABE fermentation broths to avoid butanol toxicity to the microorganisms. The pervaporation (PV) membrane process is a key sustainable technology for butanol recovery in these challenging conditions. In this work, the grafting of azido-polydimethylsiloxane (PDMS-N3) onto a PDMS-based multiblock copolymer containing alkyne side groups led to a series of original membrane materials with increasing PDMS contents from 50 to 71 wt %. Their membrane properties were assessed for butanol recovery by pervaporation from a model aqueous solution containing 2 wt % of n-butanol at 50 °C. The membrane flux J50μm for a reference thickness of 50 μm strongly increased from 84 to 192 g/h m(2) with increasing PDMS content for free-standing dense membranes with thicknesses in the range of 38-95 μm. At the same time, the intrinsic butanol permeability increased from 1.47 to 4.68 kg μm/h m(2) kPa and the permeate butanol content was also strongly improved from 38 to 53 wt %, corresponding to high and very high membrane separation factors of 30 and 55, respectively. Therefore, the new grafted copolymer materials strongly overcame the common permeability/selectivity trade-off for butanol recovery by a sustainable membrane process.

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