Performance of a biotrickling filter for the anaerobic utilization of gas-phase methanol coupled to thiosulphate reduction and resource recovery through volatile fatty acids production

  • Tejaswini Eregowda*
  • , Luck Matanhike
  • , Eldon R. Rene
  • , Piet N.L. Lens
  • *Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    15 Citations (Scopus)

    Abstract

    The anaerobic removal of continuously fed gas-phase methanol (2.5–30 g/m3.h) and the reduction of step-fed thiosulphate (1000 mg/L) was investigated in a biotrickling filter (BTF) operated for 123 d at an empty bed residence time (EBRT) of 4.6 and 2.3 min. The BTF performance during steady step-feed and special operational phases like intermittent liquid trickling in 6 and 24 h cycles and operation without pH regulation were evaluated. Performance of the BTF was not affected and nearly 100% removal of gas-phase methanol was achieved with an ECmax of 21 g/m3.h. Besides, >99% thiosulphate reduction was achieved, in all the phases of operation. The production of sulphate, H2S and volatile fatty acids (VFA) was monitored and a maximum of 2500 mg/L of acetate, 200 mg/L of propionate, 150 mg/L of isovalerate and 100 mg/L isobutyrate was produced.

    Original languageEnglish
    Pages (from-to)591-600
    Number of pages10
    JournalBioresource Technology
    Volume263
    DOIs
    Publication statusPublished - 1 Sept 2018
    Publication typeA1 Journal article-refereed

    Keywords

    • Anaerobic
    • Biotrickling filter (BTF)
    • Gas-phase methanol
    • Steady and intermittent BTF operation
    • Thiosulphate reduction
    • Volatile fatty acid

    Publication forum classification

    • Publication forum level 2

    ASJC Scopus subject areas

    • Bioengineering
    • Environmental Engineering
    • Renewable Energy, Sustainability and the Environment
    • Waste Management and Disposal

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