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Biogenic palladium enhances diatrizoate removal from hospital wastewater in a microbial electrolysis cell

Bart De Gusseme UGent, Tom Hennebel UGent, Lynn Vanhaecke UGent, Maarten Soetaert UGent, Joachim Desloover UGent, Klaas Wille UGent, Kim Verbeken UGent, Willy Verstraete UGent and Nico Boon UGent (2011) ENVIRONMENTAL SCIENCE & TECHNOLOGY. 45(13). p.5737-5745
abstract
decrease the load of pharmaceuticals to the environment, decentralized wastewater treatment has been proposed for important point-sources such as hospitals. In this study, a microbial electrolysis cell (MEC) was used for the dehalogenation of the iodinated X-ray contrast medium diatrizoate. The presence of biogenic palladium nanoparticles (bio-Pd) in the cathode significantly enhanced diatrizoate removal by direct electrochemical reduction and by reductive catalysis using the H(2) gas produced at the cathode of the MEC. Complete deiodination of 3.3 mu M (2 mg L(-1)) diatrizoate from a synthetic medium was achieved after 24 h of recirculation at an applied voltage of -0.4 V. An equimolar amount of the deiodinated metabolite 3,5-diacetamidobenzoate (DAB) was detected. Higher cell voltages increased the dehalogenation rates, resulting in a complete removal after 2 h at -0.8 V. At this cell Voltage, the MEC was also able to remove 85% of diatrizoate from hospital effluent containing 0.5 mu M (292 mu g L(-1)), after 24 h of recirculation. Complete removal was obtained when the effluent was continuously fed at a volumetric loading rate of 204 mg diatrizoate m(-3) total cathodic compartment (TCC) day(-1) to the MEC with a hydraulic retention time of 8 h. At -0.8 V, the MEC system could also eliminate 54% of diatrizoate from spiked urine during a 24 h recirculation experiment. The final product DAB was demonstrated to be removable by nitrifying biomass, which suggests that the combination of a MEC and bio-Pd in its cathode offers potential to dehalogenate pharmaceuticals, and to significantly lower the environmental burden of hospital waste streams.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
AQUATIC ENVIRONMENT, FUEL-CELLS, PD-BASED CATALYSTS, RAY CONTRAST-MEDIA, PHARMACEUTICALS, NANOPARTICLES, PRODUCTS, HYDRODEHALOGENATION, DECHLORINATION, REDUCTION
journal title
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Environ. Sci. Technol.
volume
45
issue
13
pages
5737 - 5745
Web of Science type
Article
Web of Science id
000292075100041
JCR category
ENVIRONMENTAL SCIENCES
JCR impact factor
5.228 (2011)
JCR rank
8/203 (2011)
JCR quartile
1 (2011)
ISSN
0013-936X
DOI
10.1021/es200702m
project
Biotechnology for a sustainable economy (Bio-Economy)
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1857737
handle
http://hdl.handle.net/1854/LU-1857737
date created
2011-07-12 16:19:45
date last changed
2013-02-27 12:59:20
@article{1857737,
  abstract     = {decrease the load of pharmaceuticals to the environment, decentralized wastewater treatment has been proposed for important point-sources such as hospitals. In this study, a microbial electrolysis cell (MEC) was used for the dehalogenation of the iodinated X-ray contrast medium diatrizoate. The presence of biogenic palladium nanoparticles (bio-Pd) in the cathode significantly enhanced diatrizoate removal by direct electrochemical reduction and by reductive catalysis using the H(2) gas produced at the cathode of the MEC. Complete deiodination of 3.3 mu M (2 mg L(-1)) diatrizoate from a synthetic medium was achieved after 24 h of recirculation at an applied voltage of -0.4 V. An equimolar amount of the deiodinated metabolite 3,5-diacetamidobenzoate (DAB) was detected. Higher cell voltages increased the dehalogenation rates, resulting in a complete removal after 2 h at -0.8 V. At this cell Voltage, the MEC was also able to remove 85\% of diatrizoate from hospital effluent containing 0.5 mu M (292 mu g L(-1)), after 24 h of recirculation. Complete removal was obtained when the effluent was continuously fed at a volumetric loading rate of 204 mg diatrizoate m(-3) total cathodic compartment (TCC) day(-1) to the MEC with a hydraulic retention time of 8 h. At -0.8 V, the MEC system could also eliminate 54\% of diatrizoate from spiked urine during a 24 h recirculation experiment. The final product DAB was demonstrated to be removable by nitrifying biomass, which suggests that the combination of a MEC and bio-Pd in its cathode offers potential to dehalogenate pharmaceuticals, and to significantly lower the environmental burden of hospital waste streams.},
  author       = {De Gusseme, Bart and Hennebel, Tom and Vanhaecke, Lynn and Soetaert, Maarten and Desloover, Joachim and Wille, Klaas and Verbeken, Kim and Verstraete, Willy and Boon, Nico},
  issn         = {0013-936X},
  journal      = {ENVIRONMENTAL SCIENCE \& TECHNOLOGY},
  keyword      = {AQUATIC ENVIRONMENT,FUEL-CELLS,PD-BASED CATALYSTS,RAY CONTRAST-MEDIA,PHARMACEUTICALS,NANOPARTICLES,PRODUCTS,HYDRODEHALOGENATION,DECHLORINATION,REDUCTION},
  language     = {eng},
  number       = {13},
  pages        = {5737--5745},
  title        = {Biogenic palladium enhances diatrizoate removal from hospital wastewater in a microbial electrolysis cell},
  url          = {http://dx.doi.org/10.1021/es200702m},
  volume       = {45},
  year         = {2011},
}

Chicago
De Gusseme, Bart, Tom Hennebel, Lynn Vanhaecke, Maarten Soetaert, Joachim Desloover, Klaas Wille, Kim Verbeken, Willy Verstraete, and Nico Boon. 2011. “Biogenic Palladium Enhances Diatrizoate Removal from Hospital Wastewater in a Microbial Electrolysis Cell.” Environmental Science & Technology 45 (13): 5737–5745.
APA
De Gusseme, B., Hennebel, T., Vanhaecke, L., Soetaert, M., Desloover, J., Wille, K., Verbeken, K., et al. (2011). Biogenic palladium enhances diatrizoate removal from hospital wastewater in a microbial electrolysis cell. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 45(13), 5737–5745.
Vancouver
1.
De Gusseme B, Hennebel T, Vanhaecke L, Soetaert M, Desloover J, Wille K, et al. Biogenic palladium enhances diatrizoate removal from hospital wastewater in a microbial electrolysis cell. ENVIRONMENTAL SCIENCE & TECHNOLOGY. 2011;45(13):5737–45.
MLA
De Gusseme, Bart, Tom Hennebel, Lynn Vanhaecke, et al. “Biogenic Palladium Enhances Diatrizoate Removal from Hospital Wastewater in a Microbial Electrolysis Cell.” ENVIRONMENTAL SCIENCE & TECHNOLOGY 45.13 (2011): 5737–5745. Print.