TY - JOUR
T1 - Hythane (H2 + CH4) production from petrochemical wastewater containing mono-ethylene glycol via stepped anaerobic baffled reactor
AU - Elreedy, Ahmed
AU - Tawfik, Ahmed
AU - Kubota, Kengo
AU - Shimada, Yusuke
AU - Harada, Hideki
N1 - Funding Information:
The first author is very grateful for Ministry of Higher Education (MOHE) for giving him a PhD scholarship to study at Egypt-Japan University of Science and Technology (E-JUST).
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - Hythane (H2 + CH4) production from petrochemical wastewater containing mono-ethylene glycol (MEG) via a novel stepped anaerobic baffled (SAB) reactor was investigated. The reactor was continuously operated for five months at constant hydraulic retention time (HRT) of 72 h and different organic loading rates (OLRs) of 0.33, 0.67 and 1.67 gCOD l-1 d-1. The maximum H2 yield of 359.01 ± 33.46 ml H2 gCODremoved-1 and H2 production rate of 5.12 ± 0.48 l d-1 were obtained at OLR of 1.67 gCOD l-1 d-1. Nevertheless, the maximum methane yield of 159.11 ± 14.72 ml CH4 gCODremoved-1 and methane production rate of 2.48 ± 0.22 l d-1 were recorded at OLR of 0.67 gCOD l-1 d-1. The maximum CH4 and H2 content of 52.08 and 49.84% were achieved at OLR of 0.33 and 1.67 gCOD l-1 d-1, respectively. Compartment-wise hythane profiles were assessed to optimize the production rate. Microbial community analysis was conducted and showed the dominant bacteria of Proteobacteria (44.3%), Firmicutes (28.9%), Chloroflexi (8.9%), Actinobacteria (5.7%), and Bacteroidetes (5.6%).
AB - Hythane (H2 + CH4) production from petrochemical wastewater containing mono-ethylene glycol (MEG) via a novel stepped anaerobic baffled (SAB) reactor was investigated. The reactor was continuously operated for five months at constant hydraulic retention time (HRT) of 72 h and different organic loading rates (OLRs) of 0.33, 0.67 and 1.67 gCOD l-1 d-1. The maximum H2 yield of 359.01 ± 33.46 ml H2 gCODremoved-1 and H2 production rate of 5.12 ± 0.48 l d-1 were obtained at OLR of 1.67 gCOD l-1 d-1. Nevertheless, the maximum methane yield of 159.11 ± 14.72 ml CH4 gCODremoved-1 and methane production rate of 2.48 ± 0.22 l d-1 were recorded at OLR of 0.67 gCOD l-1 d-1. The maximum CH4 and H2 content of 52.08 and 49.84% were achieved at OLR of 0.33 and 1.67 gCOD l-1 d-1, respectively. Compartment-wise hythane profiles were assessed to optimize the production rate. Microbial community analysis was conducted and showed the dominant bacteria of Proteobacteria (44.3%), Firmicutes (28.9%), Chloroflexi (8.9%), Actinobacteria (5.7%), and Bacteroidetes (5.6%).
KW - Hythane
KW - Microbial community
KW - Mono-ethylene glycol
KW - Organic loading rate
KW - Petrochemical wastewater
KW - Stepped anaerobic baffled reactor
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U2 - 10.1016/j.ibiod.2015.09.015
DO - 10.1016/j.ibiod.2015.09.015
M3 - Article
AN - SCOPUS:84943543989
SN - 0964-8305
VL - 105
SP - 252
EP - 261
JO - International Biodeterioration and Biodegradation
JF - International Biodeterioration and Biodegradation
ER -