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  4. Effect of selected metal ions on the photocatalytic degradation of bog lake water natural organic matter
 
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2011
Journal Article
Title

Effect of selected metal ions on the photocatalytic degradation of bog lake water natural organic matter

Abstract
Herein we report the photocatalytic degradation of natural organic matter from a bog lake (Lake Hohloh, Black Forest, Germany) in the presence of 0, 5, and 10 ?mol L-1 of added Cu2+, Mn2+, Zn2+ and Fe3+. The reactions were followed by size exclusion chromatography with organic carbon detection (SEC-DOC) and by measurements of low molecular weight organic acids. Addition of Cu2+ had the largest effect of all four studied metals, leading to a retardation in the molecular size changes in NOM: degradation of the larger molecular weight fraction was inhibited leading to reduced production of smaller molecular weight metabolites. Similarly, addition of Cu2+ reduced the production of formic and oxalic acids, and reduced the bioavailability of the partially degraded NOM.
Author(s)
Tercero Espinoza, L.A.  orcid-logo
Haseborg, E. ter
Weber, M.
Karle, E.
Peschke, R.
Frimmel, F.H.
Journal
Water Research  
DOI
10.1016/j.watres.2010.10.013
Language
English
Fraunhofer-Institut für System- und Innovationsforschung ISI  
Keyword(s)
  • heterogeneous photocatalysis

  • natural organic matter

  • size exclusion chromatography

  • low molecular weight organic

  • degradation

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