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Title: Selenium Speciation in Biofilms from Granular Sludge Bed Reactors Used for Wastewater Treatment

Abstract

Se K-edge XAFS spectra were collected for various model compounds of Se as well as for 3 biofilm samples from bioreactors used for Se-contaminated wastewater treatment. In the biofilm samples, Se is dominantly as Se(0) despite Se K-edge XANES spectroscopy cannot easily distinguish between elemental Se and Se(-I)-bearing selenides. EXAFS spectra indicate that Se is located within aperiodic domains, markedly different to these known in monoclinc red selenium. However, Se can well occur within nanodivided domains related to monoclinic red Se, as this form was optically observed at the rim of some sludges. Aqueous selenate is then efficiently bioreduced, under sulfate reducing and methanogenic conditions.

Authors:
 [1];  [2]; ;  [3];  [2]
  1. Laboratoire des Geomateriaux, Universite de Marne la Vallee (France)
  2. Dept. of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115 (United States)
  3. Sub-dept. of Environmental Technology, Wageningen Universitaet, 6700 EV Wageningen (Netherlands)
Publication Date:
OSTI Identifier:
21054601
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 882; Journal Issue: 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644483; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTRA; ABSORPTION SPECTROSCOPY; ARSENIC SELENIDES; BIOREACTORS; BIOTECHNOLOGY; CHEMICAL STATE; FINE STRUCTURE; MONOCLINIC LATTICES; RESONANCE IONIZATION MASS SPECTROSCOPY; SELENATES; SELENIUM; SLUDGES; SULFATES; WASTE DISPOSAL; WASTE WATER; WATER TREATMENT; X-RAY SPECTRA; X-RAY SPECTROSCOPY

Citation Formats

Hullenbusch, Eric van, Farges, Francois, USM 201 'Mineralogie', UMR CNRS 7160, Museum National d'Histoire Naturelle, Paris,, Lenz, Markus, Lens, Piet, Brown, Jr, Gordon E, and Stanford Synchrotron Radiation Laboratory, SLAC, MS 69, 2575 Sand Hill Road, Menlo Park, CA 94025. Selenium Speciation in Biofilms from Granular Sludge Bed Reactors Used for Wastewater Treatment. United States: N. p., 2007. Web. doi:10.1063/1.2644483.
Hullenbusch, Eric van, Farges, Francois, USM 201 'Mineralogie', UMR CNRS 7160, Museum National d'Histoire Naturelle, Paris,, Lenz, Markus, Lens, Piet, Brown, Jr, Gordon E, & Stanford Synchrotron Radiation Laboratory, SLAC, MS 69, 2575 Sand Hill Road, Menlo Park, CA 94025. Selenium Speciation in Biofilms from Granular Sludge Bed Reactors Used for Wastewater Treatment. United States. https://doi.org/10.1063/1.2644483
Hullenbusch, Eric van, Farges, Francois, USM 201 'Mineralogie', UMR CNRS 7160, Museum National d'Histoire Naturelle, Paris,, Lenz, Markus, Lens, Piet, Brown, Jr, Gordon E, and Stanford Synchrotron Radiation Laboratory, SLAC, MS 69, 2575 Sand Hill Road, Menlo Park, CA 94025. 2007. "Selenium Speciation in Biofilms from Granular Sludge Bed Reactors Used for Wastewater Treatment". United States. https://doi.org/10.1063/1.2644483.
@article{osti_21054601,
title = {Selenium Speciation in Biofilms from Granular Sludge Bed Reactors Used for Wastewater Treatment},
author = {Hullenbusch, Eric van and Farges, Francois and USM 201 'Mineralogie', UMR CNRS 7160, Museum National d'Histoire Naturelle, Paris, and Lenz, Markus and Lens, Piet and Brown, Jr, Gordon E and Stanford Synchrotron Radiation Laboratory, SLAC, MS 69, 2575 Sand Hill Road, Menlo Park, CA 94025},
abstractNote = {Se K-edge XAFS spectra were collected for various model compounds of Se as well as for 3 biofilm samples from bioreactors used for Se-contaminated wastewater treatment. In the biofilm samples, Se is dominantly as Se(0) despite Se K-edge XANES spectroscopy cannot easily distinguish between elemental Se and Se(-I)-bearing selenides. EXAFS spectra indicate that Se is located within aperiodic domains, markedly different to these known in monoclinc red selenium. However, Se can well occur within nanodivided domains related to monoclinic red Se, as this form was optically observed at the rim of some sludges. Aqueous selenate is then efficiently bioreduced, under sulfate reducing and methanogenic conditions.},
doi = {10.1063/1.2644483},
url = {https://www.osti.gov/biblio/21054601}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 882,
place = {United States},
year = {Fri Feb 02 00:00:00 EST 2007},
month = {Fri Feb 02 00:00:00 EST 2007}
}