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Kinetic model
for an up-flow anaerobic packed bed bioreactor: Dairy
wastewater treatment
G. D. Najafpour*,
M. Tajallipour, M. Komeili, and M. Mohammadi
Department of Chemical Engineering, Noushirvani University
of Technology, Babol, Iran.
*Corresponding author. E-mail:
najafpour@nit.ac.ir
or
najafpour8@yahoo.com.
Tel/Fax:
+98-111-3234204.
Accepted 11 June, 2009 |
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Kinetic studies of anaerobic digestion process of
cheese whey were conducted in a pilot-scale up-flow
anaerobic packed bed bioreactor (UAPB). An influent COD
concentration of 59419 mg/l was utilized at steady state
condition. Logistic and Monod kinetic models were employed
to describe microbial activities of cheese whey in an
anaerobic digester. The hydraulic retention times (HRT) in
the range of 6 to 24 h were investigated throughout the
experiments. Lactose conversions were 58.5 and 99.4% for HRT
of 6 and 16 h, respectively. The methane production rates
were 6.57 and 3.25 l/h for HRT of 6 and 24
h, respectively.
Monod biokinetic coefficients, Ks, and
methane yield (YM) were 8.59, 7.63 (h-1)
and 0.11 (g methane/g lactose), respectively.
Key words:
Anaerobic filter, UAPB, cheese whey, methane yield, kinetic
model, monod, logistic. |
