Document Detail


Ethinylestradiol removal in a conventional and a simultaneous nitrification-denitrification membrane bioreactor.
MedLine Citation:
PMID:  22170824     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The removal of a synthetic estrogen 17α-ethinylestradiol (EE2) was investigated in submerged membrane bioreactors (MBRs) with simultaneous nitrification-denitrification (SND) and conventional nitrification. The influent EE2 concentration was 500 ng/L as EE2. Using a yeast estrogen screen test, the conventional-MBR (C-MBR) and SND MBR (SND-MBR) removed 57 and 58% of the estrogenic activity (EA) respectively; there was no significant difference in their removal efficiencies. Biodegradation was the dominant removal mechanism for both reactors with K(BIO) coefficients of 1.5 ± 0.6 and 1.6 ± 0.4 day(-1) for the C-MBR and the SND-MBR respectively. Sorption to solid particles removed approximately 1% of influent EA in each reactor; the particle partitioning coefficient, K(D), was calculated to be 0.21 ± 0.07 L/(g MLSS) for the C-MBR and 0.27 ± 0.1 L/(g MLSS) for the SND-MBR. These findings suggest that conditions favoring SND in MBRs have no significant impact on EA reduction.
Authors:
M Paetkau; W Yang; N Cicek
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Water science and technology : a journal of the International Association on Water Pollution Research     Volume:  64     ISSN:  0273-1223     ISO Abbreviation:  Water Sci. Technol.     Publication Date:  2011  
Date Detail:
Created Date:  2011-12-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9879497     Medline TA:  Water Sci Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  2333-7     Citation Subset:  IM    
Affiliation:
Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada E-mail: nazim_cicek@umanitoba.ca.
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