Permanganate formation in the reactions of ozone with Mn(II): a mechanistic study

Research Article| September 01 2008 Permanganate formation in the reactions of ozone with Mn(II): a mechanistic study Erika Reisz; Erika Reisz 1University “Politehnica” of Timişoara, Bulevardul Victoriei 2, 300006 Timişoara, Romania Search for other works by this author on: This Site PubMed Google Scholar Achim Leitzke; Achim Leitzke 2Max-Planck-Institut für Bioanorganische Chemie, Stiftstr. 34-36, P. O. Box 101365, 45470 Mülheim an der Ruhr, Germany Search for other works by this author on: This Site PubMed Google Scholar Alexandra Jarocki; Alexandra Jarocki 3Universität Duisburg-Essen, Fachgebiet Instrumentelle Analytische Chemie, Lotharstr. 1, 47048 Duisburg, Germany Search for other works by this author on: This Site PubMed Google Scholar Rudolf Irmscher; Rudolf Irmscher 4Stadtwerke Düsseldorf AG, Höherweg 100, 40233 Düsseldorf, Germany Search for other works by this author on: This Site PubMed Google Scholar Clemens von Sonntag Clemens von Sonntag 2Max-Planck-Institut für Bioanorganische Chemie, Stiftstr. 34-36, P. O. Box 101365, 45470 Mülheim an der Ruhr, Germany Tel.: +49-208-31806; E-mail: clemens@vonsonntag.de Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2008) 57 (6): 451–464. https://doi.org/10.2166/aqua.2008.091 Article history Received: October 03 2007 Accepted: January 18 2008 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Erika Reisz, Achim Leitzke, Alexandra Jarocki, Rudolf Irmscher, Clemens von Sonntag; Permanganate formation in the reactions of ozone with Mn(II): a mechanistic study. Journal of Water Supply: Research and Technology-Aqua 1 September 2008; 57 (6): 451–464. doi: https://doi.org/10.2166/aqua.2008.091 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Ozone treatment of Mn2 + -containing waters is reported to lead to MnO4− formation. This complex reaction is investigated on the model level. In neutral solution, the main product is MnO2 and only 10% MnO4− are formed even at high ozone excess. In acid solution, however, or in neutral solution when Mn2 + is complexed by polyphosphate, oxalate, sulfate, bicarbonate or phosphate, the reaction proceeds to MnO4− in an up to 100% yield. In this reaction, three-times more O3 is consumed than stoichiometrically required indicating that higher manganese oxidations states can also be reduced by O3 (e.g., MnO2 + + O3→Mn2 + + 2O2). In acid solution or in the presence of a complexing agent and with Mn(II) in excess, Mn(III) is formed by conproportionation of Mn(II) with Mn(IV). Mn2 + -containing waters are accompanied by Fe2 + that also induces MnO4− formation. Fe2 + reacts 650-times faster with O3 than Mn2 + , and the oxidation of Mn2 + by Fe(IV) to Mn(III) can circumvent MnO2 formation. Mn(III) can then be oxidized to MnO4−. The thermodynamics of the suggested reactions is discussed. The MnO4− formation in drinking water and wastewater is most likely due to the presence of Fe2 + in these waters rather than due to complexation of Mn2 + by NOM or inorganics. iron, manganese, oxalate, ozone, permanganate, polyphosphate This content is only available as a PDF. © IWA Publishing 2008 You do not currently have access to this content.