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, Kotaro 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

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

    ASJC Scopus subject areas

    • Biotechnology

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