Abstract：
:The methane productivity and long chain fatty acids (LCFAs) degradation capability of unacclimatized seed sludge (USS) and acclimatized seed sludge (ASS) at different substrate ratios of fats oil and grease (FOG) and mixed sewage sludge were investigated in this study. Biogas produced in ASS in initial phase of anaerobic digestion had higher methane content (65-76%) than that in USS (26-73%). The degradation of major LCFAs in the ASS was 22-80%, 33-191%, and 7-64% higher for the substrate ratios of 100:10, 100:20, and 100:30, respectively, as compared to the LCFAs' degradation in USS. Microbial acclimatization increased the population of Firmicutes (40%), Bacteroidetes (32%), Synergistetes (10%), and Euryarchaeota (8%) in ASS, which supported the faster rate of LCFAs degradation for its later conversion to methane. The significant abundance of Syntrophomonas and Methanosarcina genera in ASS supported faster generation rate of methane in an obligatory syntrophic relationship.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Kurade MB,Saha S,Kim JR,Roh HS,Jeon BHdoi
10.1016/j.biortech.2019.122294subject
Has Abstractpub_date
2020-01-01 00:00:00pages
122294eissn
0960-8524issn
1873-2976pii
S0960-8524(19)31524-Xjournal_volume
296pub_type
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