Kinetics on anaerobic co-digestion of bagasse and digested cow manure with short hydraulic retention time

The anaerobic co-digestion of bagasse with digested cow manure was operated in 3 l semi-continuous reactor under mesophlic temperature at 34 ± 1°C. Short hydraulic retention time and high organic loading rate applied were 10 days and 3.465 kg volatile solids (VS)/m3.day, respectively. Anaerobic co-d...

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Bibliographic Details
Published in:Research in Agricultural Engineering (Praha) 2017, Vol.63 (3), p.121-127
Main Authors: Darwin, Darwin, Fazil, Afrizal, Ilham, Muhammad, Sarbaini, Sarbaini, Purwanto, Satria
Format: Article
Language:English
Subjects:
Anaerobic digestion
Bagasse
Biogas
Cattle manure
Decay rate
Growth rate
high organic loading rate
Hydraulic retention time
kinetic parameters
Load distribution
Loading rate
Manures
Microorganisms
Organic loading
Retention
Retention time
single stage anaerobic digestion
Substrates
Volatile solids
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Summary:The anaerobic co-digestion of bagasse with digested cow manure was operated in 3 l semi-continuous reactor under mesophlic temperature at 34 ± 1°C. Short hydraulic retention time and high organic loading rate applied were 10 days and 3.465 kg volatile solids (VS)/m3.day, respectively. Anaerobic co-digestion of bagasse with digested cow manure obtained higher biogas yield (69 ml/g VS) compared with the anaerobic digestion of digested cow manure alone (20.42 ml/g.VS). ?Kinetic assessment revealed that the maximum specific growth rate, the maximum rate of substrate consumption, half-velocity constant, endogenous decay constant and microbial growth yield obtained were 3.917 day–1, 870.309 mg/mg, 15.09 mg/l , 8.1518 day–1 and 0.0193 mg/mg, respectively. This result indicated that a longer retention time was required to allow the bacterial growth.
ISSN:1212-9151
1805-9376
DOI:10.17221/18/2016-RAE