Extracellular Polymeric Substances Govern the Surface Charge of Biogenic Elemental Selenium Nanoparticles

Handle URI:
http://hdl.handle.net/10754/598300
Title:
Extracellular Polymeric Substances Govern the Surface Charge of Biogenic Elemental Selenium Nanoparticles
Authors:
Jain, Rohan; Jordan, Norbert; Weiss, Stephan; Foerstendorf, Harald; Heim, Karsten; Kacker, Rohit; Hübner, René; Kramer, Herman; van Hullebusch, Eric D.; Farges, François; Lens, Piet N. L.
Abstract:
© 2014 American Chemical Society. The origin of the organic layer covering colloidal biogenic elemental selenium nanoparticles (BioSeNPs) is not known, particularly in the case when they are synthesized by complex microbial communities. This study investigated the presence of extracellular polymeric substances (EPS) on BioSeNPs. The role of EPS in capping the extracellularly available BioSeNPs was also examined. Fourier transform infrared (FT-IR) spectroscopy and colorimetric measurements confirmed the presence of functional groups characteristic of proteins and carbohydrates on the BioSeNPs, suggesting the presence of EPS. Chemical synthesis of elemental selenium nanoparticles in the presence of EPS, extracted from selenite fed anaerobic granular sludge, yielded stable colloidal spherical selenium nanoparticles. Furthermore, extracted EPS, BioSeNPs, and chemically synthesized EPS-capped selenium nanoparticles had similar surface properties, as shown by ζ-potential versus pH profiles and isoelectric point measurements. This study shows that the EPS of anaerobic granular sludge form the organic layer present on the BioSeNPs synthesized by these granules. The EPS also govern the surface charge of these BioSeNPs, thereby contributing to their colloidal properties, hence affecting their fate in the environment and the efficiency of bioremediation technologies.
Citation:
Jain R, Jordan N, Weiss S, Foerstendorf H, Heim K, et al. (2015) Extracellular Polymeric Substances Govern the Surface Charge of Biogenic Elemental Selenium Nanoparticles. Environ Sci Technol 49: 1713–1720. Available: http://dx.doi.org/10.1021/es5043063.
Publisher:
American Chemical Society (ACS)
Journal:
Environmental Science & Technology
Issue Date:
3-Feb-2015
DOI:
10.1021/es5043063
PubMed ID:
25536371
Type:
Article
ISSN:
0013-936X; 1520-5851
Sponsors:
The authors thank Dr. Graciella Gil-Gonzalez (KAUST, Saudi Arabia) for insightful discussion, Ferdi Battles (UNESCO-IHE, The Netherlands) for the Nanosizer and acid–base titration experiments, Berend Lolkema (UNESCO-IHE, The Netherlands) for TOC, TN, and 3D EEM analysis, Elfi Christalle (Helmholtz-Zentrum, Dresden-Rossendorf, Germany) for SEM-EDXS measurements, and Purvi Jain (Utrecht University, The Netherlands) for DNA measurements.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorJain, Rohanen
dc.contributor.authorJordan, Norberten
dc.contributor.authorWeiss, Stephanen
dc.contributor.authorFoerstendorf, Haralden
dc.contributor.authorHeim, Karstenen
dc.contributor.authorKacker, Rohiten
dc.contributor.authorHübner, Renéen
dc.contributor.authorKramer, Hermanen
dc.contributor.authorvan Hullebusch, Eric D.en
dc.contributor.authorFarges, Françoisen
dc.contributor.authorLens, Piet N. L.en
dc.date.accessioned2016-02-25T13:18:16Zen
dc.date.available2016-02-25T13:18:16Zen
dc.date.issued2015-02-03en
dc.identifier.citationJain R, Jordan N, Weiss S, Foerstendorf H, Heim K, et al. (2015) Extracellular Polymeric Substances Govern the Surface Charge of Biogenic Elemental Selenium Nanoparticles. Environ Sci Technol 49: 1713–1720. Available: http://dx.doi.org/10.1021/es5043063.en
dc.identifier.issn0013-936Xen
dc.identifier.issn1520-5851en
dc.identifier.pmid25536371en
dc.identifier.doi10.1021/es5043063en
dc.identifier.urihttp://hdl.handle.net/10754/598300en
dc.description.abstract© 2014 American Chemical Society. The origin of the organic layer covering colloidal biogenic elemental selenium nanoparticles (BioSeNPs) is not known, particularly in the case when they are synthesized by complex microbial communities. This study investigated the presence of extracellular polymeric substances (EPS) on BioSeNPs. The role of EPS in capping the extracellularly available BioSeNPs was also examined. Fourier transform infrared (FT-IR) spectroscopy and colorimetric measurements confirmed the presence of functional groups characteristic of proteins and carbohydrates on the BioSeNPs, suggesting the presence of EPS. Chemical synthesis of elemental selenium nanoparticles in the presence of EPS, extracted from selenite fed anaerobic granular sludge, yielded stable colloidal spherical selenium nanoparticles. Furthermore, extracted EPS, BioSeNPs, and chemically synthesized EPS-capped selenium nanoparticles had similar surface properties, as shown by ζ-potential versus pH profiles and isoelectric point measurements. This study shows that the EPS of anaerobic granular sludge form the organic layer present on the BioSeNPs synthesized by these granules. The EPS also govern the surface charge of these BioSeNPs, thereby contributing to their colloidal properties, hence affecting their fate in the environment and the efficiency of bioremediation technologies.en
dc.description.sponsorshipThe authors thank Dr. Graciella Gil-Gonzalez (KAUST, Saudi Arabia) for insightful discussion, Ferdi Battles (UNESCO-IHE, The Netherlands) for the Nanosizer and acid–base titration experiments, Berend Lolkema (UNESCO-IHE, The Netherlands) for TOC, TN, and 3D EEM analysis, Elfi Christalle (Helmholtz-Zentrum, Dresden-Rossendorf, Germany) for SEM-EDXS measurements, and Purvi Jain (Utrecht University, The Netherlands) for DNA measurements.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleExtracellular Polymeric Substances Govern the Surface Charge of Biogenic Elemental Selenium Nanoparticlesen
dc.typeArticleen
dc.identifier.journalEnvironmental Science & Technologyen
dc.contributor.institutionUNESCO-IHE Institute for Water Education, Delft, Netherlandsen
dc.contributor.institutionHelmholtz-Zentrum Dresden-Rossendorf, Dresden, Germanyen
dc.contributor.institutionDelft University of Technology, Delft, Netherlandsen
dc.contributor.institutionUniversite Paris-Est, Marne-la-Vallee, Franceen
dc.contributor.institutionMuseum National d'Histoire Naturelle, Paris, Franceen

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