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Volume 7, Issue 2 (Suppl)
J Ecosyst Ecography, an open access journal
ISSN:2157-7625
September 18-20, 2017
September 18-20, 2017 Toronto, Canada
Joint Conference
International Conference on
International Conference on
Environmental Microbiology and Microbial Ecology
&
Ecology and Ecosystems
J Ecosyst Ecography 2017, 7:2 (Suppl)
DOI: 10.4172/2157-7625-C1-030
Efficiency of an upflow anaerobic sludge blanket reactor treating potato starch processing wastewater
and related process kinetics, functional microbial community and sludge morphology
Philip Antwi
1
, Jianzheng Li
1
, Portia Opoku Boadi
1
, Jia Meng
1
, Frank Koblah Quashie
1
, Xin Wang
1
, Nanqi Ren
1
and
Gerardo Buelna
2
1
Harbin Institute of Technology, China
2
Centre de Recherch Industrielle du Qu bec, Canada
H
erein, an upflow anaerobic sludge blanket reactor was employed to treat potato starch processing wastewater and the efficacy,
kinetics, microbial diversity andmorphology of sludge granules were investigated.When organic loading rate (OLR) ranging from
2.70 to 13.27kgCOD/m3.d was implemented with various hydraulic retention times (72h, 48h and 36h), COD removal could reach
92.0-97.7%. Highest COD removal (97.7%) was noticed when OLR was 3.65 kgCOD/m3.d, but had declined to 92.0% when OLR was
elevated to 13.27 kgCOD/m3.d. Methane and biogas production increased from 0.48 to 2.97 L/L.d and 0.90 to 4.28 L/L.d, respectively.
Kinetics and predictions by modified-Gompertz model agreed better with experimental data as opposed to first-order kinetic model.
Functional population with highest abundance was Chloroflexi (28.91%) followed by Euryarchaeota (22.13%), Firmicutes (16.7%),
Proteobacteria (16.25%) and Bacteroidetes (7.73%). Compared with top sludge, tightly-bound extracellular polymeric substances was
high within bottom and middle sludge. Morphology was predominantly Methanosaeta-like cells, Methanosarcina-like cells, rods and
cocci colonies.
kobbyjean@yahoo.co.uk philipantwi@stu.hit.edu.cn