TY - JOUR
T1 - Treatment of thin stillage in a high-rate anaerobic fluidized bed bioreactor (AFBR)
AU - Andalib, Mehran
AU - Hafez, Hisham
AU - Elbeshbishy, Elsayed
AU - Nakhla, George
AU - Zhu, Jesse
N1 - Funding Information:
The authors gratefully acknowledge GreenField Ethanol Inc., Chatham, Canada , Natural Science and Engineering Research Council of Canada (NSERC) , Ontario Center of Excellence (OCE), Canada , for their support and interest in this project.
PY - 2012/10
Y1 - 2012/10
N2 - The primary objective of this work was to investigate the treatability of thin stillage as a by-product of bioethanol production plants using an anaerobic fluidized bed bioreactor (AFBR) employing zeolite with average diameter of (dm) of 425-610μm and specific surface area (SSA) of 26.5m2/g as the carrier media. Despite the very high strength of thin stillage with chemical oxygen demand of 130,000mgTCOD/L and suspended solids of 47,000mgTSS/L, the AFBR showed up to 88% TCOD and 78% TSS removal at very high organic and solids loading rates (OLR and SLR) of 29kg COD/m3d and 10.5kgTSS/m3d respectively and hydraulic retention time (HRT) of 3.5days. Methane production rates of up to 160L/d at the steady state equivalent to 40LCH4/Lthin stillaged and biogas production rate per reactor volume of 15.8Lgas/Lreactord were achieved.
AB - The primary objective of this work was to investigate the treatability of thin stillage as a by-product of bioethanol production plants using an anaerobic fluidized bed bioreactor (AFBR) employing zeolite with average diameter of (dm) of 425-610μm and specific surface area (SSA) of 26.5m2/g as the carrier media. Despite the very high strength of thin stillage with chemical oxygen demand of 130,000mgTCOD/L and suspended solids of 47,000mgTSS/L, the AFBR showed up to 88% TCOD and 78% TSS removal at very high organic and solids loading rates (OLR and SLR) of 29kg COD/m3d and 10.5kgTSS/m3d respectively and hydraulic retention time (HRT) of 3.5days. Methane production rates of up to 160L/d at the steady state equivalent to 40LCH4/Lthin stillaged and biogas production rate per reactor volume of 15.8Lgas/Lreactord were achieved.
KW - Fluidized bed bioreactor
KW - High rate anaerobic digester
KW - Suspended solids
KW - Thin stillage
UR - http://www.scopus.com/inward/record.url?scp=84865553580&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2012.07.008
DO - 10.1016/j.biortech.2012.07.008
M3 - Article
C2 - 22864177
AN - SCOPUS:84865553580
SN - 0960-8524
VL - 121
SP - 411
EP - 418
JO - Bioresource Technology
JF - Bioresource Technology
ER -
