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Effects of ferrous iron on the performance and microbial community in aerobic granular sludge in relation to nutrient removal
Biotechnology progress, 2017-05, Vol.33 (3), p.716-725
Yilmaz, Gulsum
Cetin, Ender
Bozkurt, Umit
Aleksanyan Magden, Karin
2017
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Yilmaz, Gulsum
Cetin, Ender
Bozkurt, Umit
Aleksanyan Magden, Karin
Titel
Effects of ferrous iron on the performance and microbial community in aerobic granular sludge in relation to nutrient removal
Ist Teil von
Biotechnology progress, 2017-05, Vol.33 (3), p.716-725
Ort / Verlag
United States: Wiley Subscription Services, Inc
Erscheinungsjahr
2017
Quelle
MEDLINE
Beschreibungen/Notizen
Lab‐scale experiments were conducted to investigate the effects of ferrous iron on nutrient removal performance and variations in the microbial community inside aerobic granular sludge for 408 days. Two reactors were simultaneously operated, one without added ferrous iron (SBR1), and one with 10 mg Fe2+ L−1 of added ferrous iron (SBR2). A total of 1 mg Fe2+ L−1 of added ferrous iron was applied to SBR1 starting from the 191st day to observe the resulting variations in the nutrient removal performance and the microbial community. The results show that ammonia‐oxidizing bacteria (AOB) could not oxidize ammonia due to a lack of iron compounds, but they could survive in the aerobic granular sludge. Limited ferrous iron addition encouraged nitrification. Enhanced biological phosphorus removal (EBPR) from both reactors could not be maintained regardless of the amount of ferrous iron that was applied. EBPR was established in both reactors when the concentration of mixed liquor suspended solid (MLSS) and the percentage of Accumulibacteria increased. A total of 10 mg Fe2+ L−1 of added ferrous iron had a relatively adverse effect on the growth of AOB species compared to 1 mg Fe2+ L−1 of added ferrous iron, but it encouraged the growth of Nitrospira sp. and Accumulibacteria, which requires further study. It could be said that the compact and stable structure of aerobic granular sludge preserved AOB and NOB from Fe‐deficient conditions, and wash‐out during the disintegration period. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 33:716–725, 2017
Sprache
Englisch
Identifikatoren
ISSN: 8756-7938
eISSN: 1520-6033
DOI: 10.1002/btpr.2456
Titel-ID: cdi_proquest_miscellaneous_1873403782
Format
–
Schlagworte
Acid mine drainage
,
aerobic granular sludge
,
Aerobiosis - drug effects
,
Ammonia
,
Bacteria
,
Disintegration
,
ferrous iron
,
Iron - pharmacology
,
Iron compounds
,
microbial community
,
Microorganisms
,
Nitrification
,
Nitrification - drug effects
,
Nitrogen - metabolism
,
Oxidation
,
Phosphorus
,
Phosphorus - metabolism
,
Phosphorus removal
,
Reactors
,
Sewage - microbiology
,
Sludge
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