Comparison of the effect of ozone, ozone-hydrogen peroxide system and catalytic ozone on the biodegradable organic matter of a fulvic acid solution

• Published in: Water research (Oxford) Vol. 31; no. 3; pp. 650 - 656
• Main Authors: Volk, Christian, Roche, Pascal, Joret, Jean-Claude, Paillard, Hervé
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.03.1997; Elsevier Science
• Subjects: Applied sciences; biodegradable dissolved organic carbon (BDOC); catalytic ozone; dissolved organic carbon (DOC); Drinking water and swimming-pool water. Desalination; Exact sciences and technology; fulvic acid oxidation; mineralization; ozone; ozone-hydrogen peroxide; Pollution; Water treatment and pollution; fulvic acid oxidation; mineralization; biodegradable dissolved organic carbon (BDOC); ozone-hydrogen peroxide; catalytic ozone; dissolved organic carbon (DOC); ozone; Drinking water treatment; Ozonization; Biodegradability; Ozone; Oxidation; Fulvic acid; Experimental study; Hydrogen Peroxides; Comparative study; Organic compounds
• ISSN: 0043-1354; 1879-2448
• DOI: 10.1016/S0043-1354(96)00302-8

In this study, the effects of ozone, ozone-hydrogen peroxide and catalytic ozone were assessed from changes in the organic constituents of a synthetic solution of fulvic acids. Initial DOC and BDOC concentrations of the fulvic acid solution were 2.84 mg L −1 and 0.23 mg L −1, respectively. Oxidation tests were performed according to the Ozotest method, which provides an assessment of the extent of oxidation. Ozone, ozone-hydrogen peroxide and catalytic ozone mineralized 15%, 18% and 24% of the initial DOC, respectively. The oxidation system that generated the highest BDOC concentrations was ozone-hydrogen peroxide, while catalytic ozone produced the lowest concentrations (with ozone doses greater than 3.5 mg L −1, BDOC levels were 0.90 mg L −1, 0.80 mg L −1 and 0.60 mg L −1 for ozone-hydrogen peroxide, ozone and catalytic ozone, respectively). Catalytic ozone induced oxidation of ozone by-products into CO 2, and led to the greatest reduction in chlorine demand.