Electrodialytic separation of levulinic acid catalytically synthesized from woody biomass for use in microbial conversion

Hiroshi Habe*, Susumu Kondo, Yuya Sato, Tomoyuki Hori, Manabu Kanno, Nobutada Kimura, Hideaki Koike, Kohtaro Kirimura

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Levulinic acid (LA) is produced by the catalytic conversion of a variety of woody biomass. To investigate the potential use of desalting electrodialysis (ED) for LA purification, electrodialytic separation of levulinate from both reagent and cedar-derived LA solution (40–160 g L−1) was demonstrated. When using reagent LA solution with pH5.0–6.0, the recovery rates of levulinate ranged from 68 to 99%, and the energy consumption for recovery of 1 kg of levulinate ranged from 0.18 to 0.27 kWh kg−1. With cedar-derived LA solution (pH6.0), good agreement in levulinate recovery (88–99%), and energy consumption (0.18–0.22 kWh kg−1) were observed in comparison to the reagent LA solutions, although a longer operation time was required due to some impurities. The application of desalting ED was favorable for promoting microbial utilization of cedar-derived LA. From 0.5 mol L−1 of the ED-concentrated sodium levulinate solution, 95.6% of levulinate was recovered as LA calcium salt dihydrate by crystallization. This is the first report on ED application for LA recovery using more than 20 g L−1 LA solutions (40–160 g L−1).

Original languageEnglish
Pages (from-to)448-453
Number of pages6
JournalBiotechnology Progress
Volume33
Issue number2
DOIs
Publication statusPublished - 2017 Mar 1

Keywords

  • Levulinate
  • Pseudomonas sp
  • cellulosic biomass
  • desalting electrodialysis
  • microbial conversion

ASJC Scopus subject areas

  • Biotechnology

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