Start-up of anaerobic digestion of source-sorted organic municipal solid waste in the absence of classical inocula

Rania Maroun, Mutasem El Fadel

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    29 Scopus citations

    Abstract

    This study investigates the start-up and operation of bench-scale anaerobic digesters treating the source-sorted organic fraction of municipal solid waste in the absence of mesophilic inocula. The experimental program consisted of starting up a digester with two consecutive interventions implemented to approach steady state. While start-up was relatively slow, re-inoculation with cattle manure together with effluent dilution reduced the acclimation period and achieved better stability and effectiveness, accommodating a feeding rate at an OLR = 2.03 kg total volatile solids (TVS) m-3 day-1 and an equivalent hydraulic retention time (HRT) = 148 days. The latter highlights the long duration that should be taken into consideration in the design and start-up of anaerobic digestion systems for municipal solid waste, in countries where this system is not established, before reaching optimal steady-state conditions.

    Original languageBritish English
    Pages (from-to)6808-6814
    Number of pages7
    JournalEnvironmental Science and Technology
    Volume41
    Issue number19
    DOIs
    StatePublished - 1 Oct 2007

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