Oxidative coupling reactions mediated by horseradish peroxidase in solutions containing natural organic matter (NOM) comprised by model fulvic acids were performed in completely mixed batch and flow reactors. The subsequent removal of NOM by ultrafiltration was found to be significantly enhanced for solutions subjected to oxidative coupling. Spectroscopic examinations revealed that the fulvic acid molecules were effectively reconfigured by substantial conversion of aromatic hydroxyl groups into ether bonds via oxidative coupling. These conversions apparently result in cross-linking of NOM moieties to form stable species of greater molecular size, thus rendering them more readily removable by ultrafiltration. The results of this study suggest that catalyzed oxidative coupling reactions in combination with ultrafiltration can be developed into an effective scheme for NOM removal in water treatment operations.
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Research Article|
December 01 2004
Enhanced removal of natural organic matter via peroxidase-mediated oxidative coupling Available to Purchase
Q. Huang;
Q. Huang
1Departments of Chemical Engineering and Civil and Environmental Engineering, The University of Michigan, Ann Arbor, MI48109-2099, USA
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R.A. Pinto;
R.A. Pinto
1Departments of Chemical Engineering and Civil and Environmental Engineering, The University of Michigan, Ann Arbor, MI48109-2099, USA
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D.J. Burlingame;
D.J. Burlingame
1Departments of Chemical Engineering and Civil and Environmental Engineering, The University of Michigan, Ann Arbor, MI48109-2099, USA
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J. Tang;
J. Tang
1Departments of Chemical Engineering and Civil and Environmental Engineering, The University of Michigan, Ann Arbor, MI48109-2099, USA
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W.J. Weber, Jr
1Departments of Chemical Engineering and Civil and Environmental Engineering, The University of Michigan, Ann Arbor, MI48109-2099, USA
E-mail: [email protected]
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Water Supply (2004) 4 (4): 33–40.
Citation
Q. Huang, R.A. Pinto, D.J. Burlingame, J. Tang, W.J. Weber; Enhanced removal of natural organic matter via peroxidase-mediated oxidative coupling. Water Supply 1 December 2004; 4 (4): 33–40. doi: https://doi.org/10.2166/ws.2004.0058
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