Performance of a commercial-scale DiCOM™ demonstration facility treating mixed municipal solid waste in comparison with laboratory-scale data

L. Walker; R. Cord-Ruwisch; S. Sciberras

doi:10.1016/j.biortech.2011.12.079

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Performance of a commercial-scale DiCOM™ demonstration facility treating mixed municipal solid waste in comparison with laboratory-scale data

Journal article

Open access

Peer reviewed

Performance of a commercial-scale DiCOM™ demonstration facility treating mixed municipal solid waste in comparison with laboratory-scale data

L. Walker, R. Cord-Ruwisch and S. Sciberras

Bioresource Technology, Vol.126, pp.404-411

2012

DOI: https://doi.org/10.1016/j.biortech.2011.12.079

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Abstract

The current paper describes the performance of a commercial-scale (20,000 tpa) demonstration facility of the DiCOM™ process, a biological treatment for the organic fraction of municipal solid waste (OFMSW). The 21-d process combines aerobic composting and high-solids (30% DM), thermophilic (55 °C) anaerobic digestion (AD), within a single vessel. Mechanically sorted OFMSW, derived from mixed household MSW (324 t), was exposed to sequential aerobic/anaerobic/aerobic treatment. The AD, initiated by adding anaerobic inoculum from a previous trial, was stable (without pH intervention) and the onset of methanogenesis, rapid (<3 h). Volatile fatty acids formed during AD (including propionate) were exhausted prior to reuse of the inoculum. As measured by an electron flux from solids to gaseous end-products, AD accounted for the greatest portion of solids degradation (86% = 160 m3 CH4/dry t OFMSW). However, unlike laboratory trials, limited degradation occurred during initial aerobic treatment. The discharged solids were classified as a composted soil conditioner.

Details

Title: Performance of a commercial-scale DiCOM™ demonstration facility treating mixed municipal solid waste in comparison with laboratory-scale data
Authors/Creators: L. Walker (Author/Creator) - Murdoch University
R. Cord-Ruwisch (Author/Creator) - Murdoch University
S. Sciberras (Author/Creator) - AnaeCo Ltd., Bentley, Western Australia, Australia
Publication Details: Bioresource Technology, Vol.126, pp.404-411
Publisher: Elsevier BV
Identifiers: 991005543237207891
Copyright: © 2012 Elsevier Ltd.
Murdoch Affiliation: School of Biological Sciences and Biotechnology
Language: English
Resource Type: Journal article

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Citation topics: 3 Agriculture, Environment & Ecology; 3.83 Bioengineering; 3.83.416 Anaerobic Digestion
Web Of Science research areas: Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels
ESI research areas: Biology & Biochemistry