Application of immobilized and granular dried anaerobic biomass for stabilizing and increasing anaerobic bio-systems tolerance for high organic loads and phenol shocks

Nedal Massalha, Asher Brenner, Chaim Sheindorf, Isam Sabbah

    Research output: Contribution to journalArticlepeer-review

    13 Scopus citations

    Abstract

    This study focuses on the stability and tolerance of continuous-flow bioreactors inoculated with anaerobic methanogens in three different configurations: (R1) dried granular biomass immobilized in PAC-enriched hydrophilic polyurethane foam, (R2) dried granular biomass, and (R3) wet granular biomass. These systems were tested under two different organic loading rates (OLR) of 6.25 and 10.94 (gCOD/(Lreactor*d)), using a glucose-based synthetic mixture. The effect of an instantaneous shock load of phenol (5g/L for three days), and of phenol inclusion in the feed (0.5g/L) were also tested. At the lower OLR, all reactors performed similarly, however, increasing the OLR lead to a significant biomass washout and failure of R3. Biomass in R1 was more tolerant to phenol shock load than R2, though activity was recovered in both systems after about one month. PAC provided protection and shortened the adaptation time for 0.5g/L phenol that continuously was fed.

    Original languageEnglish
    Pages (from-to)106-112
    Number of pages7
    JournalBioresource Technology
    Volume197
    DOIs
    StatePublished - 1 Dec 2015

    Keywords

    • Activated carbon
    • Anaerobic treatment
    • Immobilized biomass
    • Phenol
    • Polyurethane foam

    ASJC Scopus subject areas

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

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