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

Research output: Contribution to journalArticlepeer-review

5 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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