Reaction mechanisms and kinetics of chemical pretreatment of bioresistant organic molecules by wet air oxidation

Research Article| February 01 1997 Reaction mechanisms and kinetics of chemical pretreatment of bioresistant organic molecules by wet air oxidation D. Mantzavinos; D. Mantzavinos 1Department of Chemical Engineering and Chemical Technology, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BY, UK Search for other works by this author on: This Site PubMed Google Scholar R. Hellenbrand; R. Hellenbrand 1Department of Chemical Engineering and Chemical Technology, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BY, UK Search for other works by this author on: This Site PubMed Google Scholar A. G. Livingston; A. G. Livingston 1Department of Chemical Engineering and Chemical Technology, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BY, UK Search for other works by this author on: This Site PubMed Google Scholar I. S. Metcalfe I. S. Metcalfe 1Department of Chemical Engineering and Chemical Technology, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BY, UK Search for other works by this author on: This Site PubMed Google Scholar Water Sci Technol (1997) 35 (4): 119–127. https://doi.org/10.2166/wst.1997.0100 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn Email 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 D. Mantzavinos, R. Hellenbrand, A. G. Livingston, I. S. Metcalfe; Reaction mechanisms and kinetics of chemical pretreatment of bioresistant organic molecules by wet air oxidation. Water Sci Technol 1 February 1997; 35 (4): 119–127. doi: https://doi.org/10.2166/wst.1997.0100 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex The partial wet air oxidation of aqueous solutions of p-coumaric acid and polyethylene glycol, two model organic pollutants typically found in wastewaters of agricultural origin and polymer-manufacturing respectively, has been investigated at temperatures from 373 K to 513 K and oxygen partial pressures from 0.2 MPa to 3 MPa. Reaction intermediates have been identified and their concentration profiles have been determined using liquid chromatography as the main analytical technique, and reaction mechanisms and pathways have been postulated. The impact of various heterogeneous catalysts, such as metal oxides and noble metals, on the kinetics and mechanisms of the reaction has also been studied. Conversion of these model compounds through various oxidation intermediates to end-products, such as carboxylic acids, could be easily achieved even under mild operating conditions, while further total oxidation proved to be difficult even under more severe conditions. Catalysts were found to be, in general, capable of increasing the rates of both partial and total uncatalysed oxidation. The stability of some of the catalysts used has also been studied with respect to metal leaching and deactivation. The implications for complete removal of bioresistant organic pollutants by partial wet oxidation followed by a biological treatment step are also discussed. Catalysts, p-coumaric acid, kinetics, mechanisms, polyethylene glycol, wastewaters, wet oxidation This content is only available as a PDF.