Anaerobic batch conversion of pine wood torrefaction condensate

Tharaka Rama Krishna C. Doddapaneni, Ramasamy Praveenkumar, Henrik Tolvanen, Marja R. T. Palmroth, Jukka Konttinen, Jukka Rintala

    Research output: Contribution to journalArticleScientificpeer-review

    19 Citations (Scopus)


    Organic compound rich torrefaction condensate, owing to their high water content and acidic nature, have yet to be exploited for practical application. In this study, microbial conversion of torrefaction condensate from pine wood through anaerobic batch digestion (AD) to produce methane was evaluated. Torrefaction condensate exhibited high methane potentials in the range of 430-492mL/g volatile solids (VS) and 430-460mL/gVS under mesophilic and thermophilic conditions, respectively. Owing to the changes in the composition, the methane yields differed with the torrefaction condensates produced at different temperatures (225, 275 and 300°C), with a maximum of 492±18mL/gVS with the condensate produced at 300°C under mesophilic condition. The cyclic batch AD experiments showed that 0.1VSsubstrate:VSinoculum is optimum, whereas the higher substrate loading (0.2-0.5) resulted in a reversible inhibition of the methane production. The results suggest that torrefaction condensate could be practically valorized through AD.

    Original languageEnglish
    Pages (from-to)299-307
    Number of pages9
    JournalBioresource Technology
    Early online date22 Nov 2016
    Publication statusPublished - Feb 2017
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 2


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