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Co-digestion of cultivated microalgae and sewage sludge from municipal waste water treatment

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Title Co-digestion of cultivated microalgae and sewage sludge from municipal waste water treatment
 
Creator OLSSON, J
FENG, XM
ASCUE, J
GENTILI, FG
SHABIIMAM, MA
NEHRENHEIM, E
THORIN, E
 
Subject Biogas production
Co-digestion
Microalgae
Sewage sludge
BIOGAS PRODUCTION
ANAEROBIC-DIGESTION
ALGAE CULTIVATION
ACTIVATED-SLUDGE
ENERGY CROPS
SOLID-WASTES
METHANE
BIOMASS
GROWTH
BIODEGRADABILITY
 
Description In this study two wet microalgae cultures and one dried microalgae culture were co-digested in different proportions with sewage sludge in mesophilic and thermophilic conditions. The aim was to evaluate if the co-digestion could lead to an increased efficiency of methane production compared to digestion of sewage sludge alone. The results showed that co-digestion with both wet and dried microalgae, in certain proportions, increased the biochemical methane potential (BMP) compared with digestion of sewage sludge alone in mesophilic conditions. The BMP was significantly higher than the calculated BMP in many of the mixtures. This synergetic effect was statistically significant in a mixture containing 63% (w/w VS based) undigested sewage sludge and 37% (w/w VS based) wet algae slurry, which produced 23% more methane than observed with undigested sewage sludge alone. The trend was that thermophilic co-digestion of microalgae and undigested sewage sludge did not give the same synergy. (C) 2014 Elsevier Ltd. All rights reserved.
 
Publisher ELSEVIER SCI LTD
 
Date 2014-12-28T16:46:21Z
2014-12-28T16:46:21Z
2014
 
Type Article
 
Identifier BIORESOURCE TECHNOLOGY, 171203-210
0960-8524
1873-2976
http://dx.doi.org/10.1016/j.biortech.2014.08.069
http://dspace.library.iitb.ac.in/jspui/handle/100/16920
 
Language English