Intensified Biobutanol Recovery by using Zeolites with Complementary Selectivity

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Stijn Van der Perre
  • Pierre Gelin
  • Benjamin Claessens
  • Ana Martin-Calvo
  • Julien Cousin Saint Remi
  • Tim Duerinck
  • Gino V. Baron
  • Miguel Palomino
  • Ledys Y. Sánchez
  • Susana Valencia
  • Ranjeet Singh
  • Paul A. Webley
  • Fernando Rey
  • Joeri F. M. Denayer

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)2968-2977
Journal / PublicationChemSusChem
Volume10
Issue number14
Publication statusPublished - 21 Jul 2017

Abstract

A vapor-phase adsorptive recovery process is proposed as an alternative way to isolate biobutanol from acetone–butanol–ethanol (ABE) fermentation media, offering several advantages compared to liquid phase separation. The effect of water, which is still present in large quantities in the vapor phase, on the adsorption of the organics could be minimized by using hydrophobic zeolites. Shape-selective all-silica zeolites CHA and LTA were prepared and evaluated with single-component isotherms and breakthrough experiments. These zeolites show opposite selectivities; adsorption of ethanol is favorable on all-silica CHA, whereas the LTA topology has a clear preference for butanol. The molecular sieving properties of both zeolites allow easy elimination of acetone from the mixture. The molecular interaction mechanisms are studied by density functional theory (DFT) simulations. The effects of mixture composition, humidity and total pressure of the vapor stream on the selectivity and separation behavior are investigated. Desorption profiles are studied to maximize butanol purity and recovery. The combination of LTA with CHA-type zeolites (Si-CHA or SAPO-34) in sequential adsorption columns with alternating adsorption and desorption steps allows butanol to be recovered in unpreceded purity and yield. A butanol purity of 99.7 mol % could be obtained at nearly complete butanol recovery, demonstrating the effectiveness of this technique for biobutanol separation processes.

Research Area(s)

  • adsorption, biobutanol, biorefineries, downstream processing, zeolites

Citation Format(s)

Intensified Biobutanol Recovery by using Zeolites with Complementary Selectivity. / Van der Perre, Stijn; Gelin, Pierre; Claessens, Benjamin; Martin-Calvo, Ana; Cousin Saint Remi, Julien; Duerinck, Tim; Baron, Gino V.; Palomino, Miguel; Sánchez, Ledys Y.; Valencia, Susana; Shang, Jin; Singh, Ranjeet; Webley, Paul A.; Rey, Fernando; Denayer, Joeri F. M.

In: ChemSusChem, Vol. 10, No. 14, 21.07.2017, p. 2968-2977.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review