| dc.creator |
Kuscu, Oezlem Selcuk |
|
| dc.creator |
Sponza, Delia Teresa |
|
| dc.date |
2009-03-31T21:00:00Z |
|
| dc.date.accessioned |
2020-10-06T09:39:30Z |
|
| dc.date.available |
2020-10-06T09:39:30Z |
|
| dc.identifier |
310afcf4-0b83-414a-a011-4619d500ab42 |
|
| dc.identifier |
10.1016/j.biortech.2008.10.049 |
|
| dc.identifier |
https://avesis.sdu.edu.tr/publication/details/310afcf4-0b83-414a-a011-4619d500ab42/oai |
|
| dc.identifier.uri |
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/56773 |
|
| dc.description |
The effects of increasing nitrobenzene (NB) concentrations and hydraulic retention times (HRT) on the treatment of NB were investigated in a sequential anaerobic baffled reactor (ABR)/aerobic completely stirred tank reactor (CSTR) system. In the first step of the study, the maximum COD removal efficiencies were found as 88% and 92% at NB concentrations varying between 30 mg L-1 and 210 mg L-1 in ABR. The minimum COD removal efficiency was 79% at a NB concentration of 700 mg L-1. The removal efficiency of NB was nearly 100% for all NB concentrations in the ABR reactor. The methane gas production and the methane gas percentage remained stable (1500 mL day(-1) and 48-50%, respectively) as the NB concentration was increased from 30 to 210 mg L-1. In the second step of the study it was found that as the HRT decreased from 10.38 days to 2.5 days the COD removal efficiencies decreased slightly from 94% to 92% in the ABR. For maximum COD and NB removal efficiencies the optimum HRT was found as 2.5 days in the ABR. The total COD removal efficiency was 95% in sequential anaerobic (ABR)/aerobic (CSTR) reactor system at a minimum HRT of 1 day. When the HRT was decreased from 10.38 days to 1 day, the methane percentage decreased from 42% to 29% in an ABR reactor treating 100 mg L-1 NB. Nitrobenzene was reduced to aniline under anaerobic conditions while aniline was mineralized to catechol with meta cleavage under aerobic conditions. (C) 2008 Elsevier Ltd. All rights reserved. |
|
| dc.language |
eng |
|
| dc.rights |
info:eu-repo/semantics/closedAccess |
|
| dc.title |
Effects of nitrobenzene concentration and hydraulic retention time on the treatment of nitrobenzene in sequential anaerobic baffled reactor (ABR)/continuously stirred tank reactor (CSTR) system |
|
| dc.type |
info:eu-repo/semantics/article |
|