In:
Waste Management & Research: The Journal for a Sustainable Circular Economy, SAGE Publications, Vol. 31, No. 8 ( 2013-08), p. 869-873
Abstract:
An experimental apparatus was constructed to perform hybrid solid anaerobic digestion batch processing of the organic fraction of municipal solid waste. The preliminary process was carried out with a high total solids concentration of about 33% w w −1 and with an initial organic load of about 340 kg VS kg −1 . The fresh organic fraction to inoculum ratio used to enhance the anaerobic process start-up was 0.910 kg VS kg VS −1 . The process was conducted by spreading the percolate on top of the mixture. The percolate was stored in a separate section of the apparatus with a mean hydraulic retention time of about 1 day. During the process, acetate, butyrate and propionate in the percolate reached concentrations ranging from 3000 to 11 000 mg L −1 . In spite of these high concentrations, the biomethane produced from both the solid and the percolate was quite high, at about 210 NL kg VS −1 . The digestate obtained at the end of the run showed rather good features for being classified as an organic fertilizer according to Italian law. However, a residual phytotoxicity level was detected by a standardized test showing a germination index of about 50%.
Type of Medium:
Online Resource
ISSN:
0734-242X
,
1096-3669
DOI:
10.1177/0734242X13477902
Language:
English
Publisher:
SAGE Publications
Publication Date:
2013
detail.hit.zdb_id:
1480483-9
detail.hit.zdb_id:
46937-3
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