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An add-on nitrifying membrane bioreactor as effluent polishing technique for 17 alpha-ethinylestradiol

Bart De Gusseme UGent, Benny Pycke UGent, Tom Hennebel UGent, Nico Boon UGent and Willy Verstraete UGent (2009) PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL II, PTS A AND B. p.195-202
abstract
17 alpha-ethinylestradiol (EE2), the active compound of the contraceptive pill, is a recalcitrant estrogen with a high endocrine disrupting potency. This compound is not adequately removed in the current wastewater treatment plants (WWTP). Increasing concern about the fate of low-level concentrations of endocrine disruptors stimulates research on alternative methods for WWTP effluent polishing. The aim of this study was to establish an innovative and effective biological removal technique for EE2 by means of a nitrifier enrichment culture (NEC) applied in a membrane bioreactor (MBR). In batch incubation tests, the NEC was able to remove EE2 from both synthetic minimal medium and WWTP effluent (maximum removal rate of 9 mu g EE2 g(-1) VSS h(-1)). The role of nitrification was demonstrated by means of a specific test in which nitrification was selectively inhibited. Application of the nitrifying consortium in a MBR resulted in a continuous removal of EE2, in combination with a complete nitrification. Variation of the ammonium concentration in the influent pointed out that an optimal EE2 removal efficiency of 99% was possible at an environmentally relevant influent concentration of 83 ng EE2 L-1 and a minimal ammonium concentration of 1 NH4+-N mg L-1. Consequently, the advanced removal of EE2 from WWTP effluent can be achieved without the addition of supplementary nitrogen. This research opens new perspectives to remove estrogenic compounds from WWTP effluents. The application of nitrifying consortia in an add-on MBR system can offer a sustainable solution for these point sources of endocrine disruptors in the environment.
Please use this url to cite or link to this publication:
author
organization
year
type
conference (proceedingsPaper)
publication status
published
subject
keyword
pharmaceuticals, micropollutants, estrogens, ammonia-oxidizing bacteria (AOB), ammonia monooxygenase (AMO), microfiltration, BACTERIUM NITROSOMONAS-EUROPAEA, ENDOCRINE DISRUPTING COMPOUNDS, ADVANCED OXIDATION PROCESSES, WATER TREATMENT PLANTS, WASTE-WATER, ACTIVATED-SLUDGE, ESTROGENIC COMPOUNDS, TREATMENT WORKS, REMOVAL, PHARMACEUTICALS
in
PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL II, PTS A AND B
editor
SC Li, YJ Wang, FX Cao, P Huang and Y Zhang
pages
195 - 202
publisher
Science Press Beijing
place of publication
Beijing, PR China
conference name
International Symposium on Environmental Science and Technology
conference location
Shanghai, PRChina
conference start
2009-06-02
conference end
2009-06-05
Web of Science type
Proceedings Paper
Web of Science id
000271258000037
ISBN
978-7-03-024459-8
language
English
UGent publication?
yes
classification
P1
id
781982
handle
http://hdl.handle.net/1854/LU-781982
date created
2009-11-16 21:28:11
date last changed
2017-01-02 09:52:42
@inproceedings{781982,
  abstract     = {17 alpha-ethinylestradiol (EE2), the active compound of the contraceptive pill, is a recalcitrant estrogen with a high endocrine disrupting potency. This compound is not adequately removed in the current wastewater treatment plants (WWTP). Increasing concern about the fate of low-level concentrations of endocrine disruptors stimulates research on alternative methods for WWTP effluent polishing. The aim of this study was to establish an innovative and effective biological removal technique for EE2 by means of a nitrifier enrichment culture (NEC) applied in a membrane bioreactor (MBR). In batch incubation tests, the NEC was able to remove EE2 from both synthetic minimal medium and WWTP effluent (maximum removal rate of 9 mu g EE2 g(-1) VSS h(-1)). The role of nitrification was demonstrated by means of a specific test in which nitrification was selectively inhibited. Application of the nitrifying consortium in a MBR resulted in a continuous removal of EE2, in combination with a complete nitrification. Variation of the ammonium concentration in the influent pointed out that an optimal EE2 removal efficiency of 99\% was possible at an environmentally relevant influent concentration of 83 ng EE2 L-1 and a minimal ammonium concentration of 1 NH4+-N mg L-1. Consequently, the advanced removal of EE2 from WWTP effluent can be achieved without the addition of supplementary nitrogen. This research opens new perspectives to remove estrogenic compounds from WWTP effluents. The application of nitrifying consortia in an add-on MBR system can offer a sustainable solution for these point sources of endocrine disruptors in the environment.},
  author       = {De Gusseme, Bart and Pycke, Benny and Hennebel, Tom and Boon, Nico and Verstraete, Willy},
  booktitle    = {PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL II, PTS A AND B},
  editor       = {Li, SC and Wang, YJ and Cao, FX and Huang, P and Zhang, Y},
  isbn         = {978-7-03-024459-8},
  keyword      = {pharmaceuticals,micropollutants,estrogens,ammonia-oxidizing bacteria (AOB),ammonia monooxygenase (AMO),microfiltration,BACTERIUM NITROSOMONAS-EUROPAEA,ENDOCRINE DISRUPTING COMPOUNDS,ADVANCED OXIDATION PROCESSES,WATER TREATMENT PLANTS,WASTE-WATER,ACTIVATED-SLUDGE,ESTROGENIC COMPOUNDS,TREATMENT WORKS,REMOVAL,PHARMACEUTICALS},
  language     = {eng},
  location     = {Shanghai, PRChina},
  pages        = {195--202},
  publisher    = {Science Press Beijing},
  title        = {An add-on nitrifying membrane bioreactor as effluent polishing technique for 17 alpha-ethinylestradiol},
  year         = {2009},
}

Chicago
De Gusseme, Bart, Benny Pycke, Tom Hennebel, Nico Boon, and Willy Verstraete. 2009. “An Add-on Nitrifying Membrane Bioreactor as Effluent Polishing Technique for 17 Alpha-ethinylestradiol.” In Progress in Environmental Science and Technology, Vol Ii, Pts A and B, ed. SC Li, YJ Wang, FX Cao, P Huang, and Y Zhang, 195–202. Beijing, PR China: Science Press Beijing.
APA
De Gusseme, B., Pycke, B., Hennebel, T., Boon, N., & Verstraete, W. (2009). An add-on nitrifying membrane bioreactor as effluent polishing technique for 17 alpha-ethinylestradiol. In SC Li, Y. Wang, F. Cao, P. Huang, & Y. Zhang (Eds.), PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL II, PTS A AND B (pp. 195–202). Presented at the International Symposium on Environmental Science and Technology, Beijing, PR China: Science Press Beijing.
Vancouver
1.
De Gusseme B, Pycke B, Hennebel T, Boon N, Verstraete W. An add-on nitrifying membrane bioreactor as effluent polishing technique for 17 alpha-ethinylestradiol. In: Li S, Wang Y, Cao F, Huang P, Zhang Y, editors. PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL II, PTS A AND B. Beijing, PR China: Science Press Beijing; 2009. p. 195–202.
MLA
De Gusseme, Bart, Benny Pycke, Tom Hennebel, et al. “An Add-on Nitrifying Membrane Bioreactor as Effluent Polishing Technique for 17 Alpha-ethinylestradiol.” Progress in Environmental Science and Technology, Vol Ii, Pts A and B. Ed. SC Li et al. Beijing, PR China: Science Press Beijing, 2009. 195–202. Print.