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  • Title: Anaerobic digestion of municipal solid wastes: dry thermophilic performance.
    Author: Forster-Carneiro T, Pérez M, Romero LI.
    Journal: Bioresour Technol; 2008 Nov; 99(17):8180-4. PubMed ID: 18434139.
    Abstract:
    The purpose of this study was to analyze the performance of two laboratory-scale reactors (5.0L) treating organic fraction of municipal solid waste (OFMSW): source sorted OFMSW (SS_OFMSW) obtained from a university restaurant and mechanically selected municipal fraction (MS_OFMSW) obtained from a Municipal Treatment Plant placed in Cadiz-Spain. Discontinuous reactors operated at thermophilic (55 degrees C) and dry (20% total solid) conditions. Different decomposition patterns were observed: (1) the SS_OFMSW exhibited the classical waste decomposition pattern with a fast start up phase beginning within 0-5 days and 20-30 and a subsequent stabilization phase. The VS removal was 45% with a cumulative biogas of 120L in approx. 60 days; (2) the MS_OFMSW showed a methanogenic pattern throughout the whole experimental period (60 days) and this gave higher levels of organic biodegradation (56%VSr) and biogas production (82L). Both processes were completed and a high level of cumulative methane production was achieved in less than 60 days, proximally 25-30L.
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