TY - JOUR
T1 - Treatment of oil sands process-affected water using moving bed biofilm reactors
T2 - With and without ozone pretreatment
AU - Shi, Yijing
AU - Huang, Chunkai
AU - Rocha, Ketley Costa
AU - El-Din, Mohamed Gamal
AU - Liu, Yang
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - Two moving bed biofilm reactors (MBBRs) were operated to treat raw (untreated) and 30. mg/L ozone-treated oil sands process-affected water (OSPW). After 210. days, the MBBR process showed 18.3% of acid-extractable fraction (AEF) and 34.8% of naphthenic acids (NAs) removal, while the ozonation combined MBBR process showed higher removal of AEF (41.0%) and NAs (78.8%). Biodegradation of raw and ozone treated OSPW showed similar performance. UPLC/HRMS analysis showed a highest NAs removal efficiency with a carbon number of 14 and a -. Z number of 4. Confocal laser scanning microscopy (CLSM) showed thicker biofilms in the raw OSPW MBBR (97. ±. 5. μm) than in the ozonated OSPW MBBR (71. ±. 12. μm). Quantitative polymerase chain reaction (. q-PCR) results showed higher abundance of gene copies of total bacteria and nitrogen removal relevant bacteria in the ozonated OSPW MBBR, but no significant difference was found. MiSeq sequencing showed Proteobacteria, Nitrospirae, and Acidobacteria were dominant.
AB - Two moving bed biofilm reactors (MBBRs) were operated to treat raw (untreated) and 30. mg/L ozone-treated oil sands process-affected water (OSPW). After 210. days, the MBBR process showed 18.3% of acid-extractable fraction (AEF) and 34.8% of naphthenic acids (NAs) removal, while the ozonation combined MBBR process showed higher removal of AEF (41.0%) and NAs (78.8%). Biodegradation of raw and ozone treated OSPW showed similar performance. UPLC/HRMS analysis showed a highest NAs removal efficiency with a carbon number of 14 and a -. Z number of 4. Confocal laser scanning microscopy (CLSM) showed thicker biofilms in the raw OSPW MBBR (97. ±. 5. μm) than in the ozonated OSPW MBBR (71. ±. 12. μm). Quantitative polymerase chain reaction (. q-PCR) results showed higher abundance of gene copies of total bacteria and nitrogen removal relevant bacteria in the ozonated OSPW MBBR, but no significant difference was found. MiSeq sequencing showed Proteobacteria, Nitrospirae, and Acidobacteria were dominant.
KW - Biofilm
KW - Microbial community
KW - Moving bed biofilm reactor (MBBR)
KW - Oil sands process-affected water (OSPW)
KW - Ozonation
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U2 - 10.1016/j.biortech.2015.05.068
DO - 10.1016/j.biortech.2015.05.068
M3 - Review article
C2 - 26038326
AN - SCOPUS:84930651101
SN - 0960-8524
VL - 192
SP - 219
EP - 227
JO - Bioresource Technology
JF - Bioresource Technology
ER -