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Production of bio‐energy from organic waste: effect of temperature and substrate composition
Author(s) -
Kerroum Derbal,
Mossaab BencheikhLehocine,
Hassen Meniai Abdessalam
Publication year - 2014
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3044
Subject(s) - mesophile , anaerobic digestion , biogas , biogas production , waste management , thermophile , municipal solid waste , chemistry , pulp and paper industry , sewage sludge , digestion (alchemy) , biodegradable waste , waste treatment , substrate (aquarium) , environmental science , methane , sewage treatment , engineering , biology , chromatography , bacteria , biochemistry , ecology , organic chemistry , genetics , enzyme
SUMMARY This article presents the influence of temperature and influent substrate composition on the produced biogas volume in an anaerobic co‐digestion process. Four cases of anaerobic digestion were considered. Digestion of waste sludge only and anaerobic co‐digestion of sludge mixed with solid waste in mesophilic (T = 35 °C) and thermophilic (T = 55 °C) phases. The obtained results show that thermophilic co‐digestion gives the best results; although the temperature has an effect on biogas production, it remains however quite relative compared to the effect of solid waste. They confirm, surely, that the combined effect of temperature and solid waste improves considerably the biogas production rate (GPR). Changing conditions from mesophilic to thermophilic ones for waste sludge alone and for waste sludge mixed with solid waste results in an increase of the GPR from 0.18 to 0.39 m 3 /m 3 .d and from 0.29 to 0.96 m 3 /m 3 .d, respectively. Copyright © 2013 John Wiley & Sons, Ltd.