Intermediate-Scale High-Solids Anaerobic Digestion System Operational Development

    Research output: NRELTechnical Report


    Anaerobic bioconversion of solid organic wastes represents a disposal option in which two useful products may be produced, including a medium Btu fuel gas (biogas) and a compost-quality organic residue. The application of high-solids technology may offer several advantages over conventional low-solids digester technology. The National Renewable Energy Laboratory (NREL) has developed a uniquedigester system capable of uniformly mixing high-solids materials at low cost. During the first 1.5 years of operation, a variety of modifications and improvements were instituted to increase the safety, reliability, and performance of the system. Those improvements, which may be critical in further scale-up efforts using ,the NREL high-solids digester design are detailed in this report.
    Original languageAmerican English
    Number of pages33
    StatePublished - 1995

    NREL Publication Number

    • NREL/TP-22990

    Other Report Number

    • DOE/R4/10591-1


    • anaerobic digestion
    • high-solids technology
    • solid organic wastes


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