Abstract
The cleaning action on wastewater as obtained through oxidation methods has been investigated by means of EPR spectroscopy to achieve qualitative and quantitative information on the radicals produced upon utilising peracetic acid and hydrogen peroxide with and without UV irradiation. The DEPMPO spin trap was employed to detect hydroxyl and carbon-centred short living radicals during water disinfection, either in the absence or in the presence of UV-C irradiation. Moreover, three different kinds of water (wastewater, demineralized water, distilled water) were analysed in order to assess the contribution of Fenton reactions to the radical production. The spectroscopic results are discussed in relation to the efficiency of the different oxidising agents and UV irradiation in wastewater disinfection evaluated as Escherichia coli, faecal and total coliforms inactivation.
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REFERENCES
M. G. C. Baldry and J. A. L. Fraser, in: Industrial Biocides, K. R. Payne (Ed.), Vol. 23, Critical Reports on Applied Chemistry. John Wiley, Chichester, UK (1998).
O. Legrini, E. Oliveros and A. M. Braun, Chem. Rev. 93, 671 (1993).
V. Lazarova, P. Savoye, M. L. Janex, E. R. Blatchley and M. Pommepuy, Advanced wastewater disinfectiontechnologies: state of the art and perspectives, in: Proceedings of AWT 98-Advanced Wastewater Treatment, Recycling and Reuse, Milan (1998).
G. C. White, Handbook of Chlorination and Alternative Disinfectants, 4th edn. Wiley Interscience, New York (1999).
C. Lubello and C. Caretti,Wastewater disinfection with peracetic acid and UV, in: Proceedings of International Symposium on Sanitary and Environmental Engeneering, Trento (2000).
N. H. Ince and G. Tezcanli, Dyes and Pigments 49, 145 (2001).
H. J. H. Fenton, J. Chem. Soc. 65, 899 (1984).
C. H. Walling, Acc. Chem. 8, 125 (1975).
C. Frejaville, H. Karoui, B. Tuccio, F. Le Moine, M. Culcasi, S. Pietri, R. Lauricella and P. Tordo, J. Med. Chem. 38, 258 (1995).
V. Roubaud, S. Sankarapandi, P. Kuppusamy, P. Tordo and J. L. Zweier, Anal. Biochem. 247, 404 (1997).
F. Buda, B. Ensing, M. C. M. Gribnau and E. J. Baerends, Eur. J. Chem. 7, 2775 (2001).
R. Ambrosetti and D. Ricci, Rev. Sci. Instrum. 62, 2281 (1991).
C. Pinzino and C. Forte, ESR-Endor. Istituto di Chimica Quantistica ed Energetica Molecolare del CNR (1992).
E. R. Blatchley, III, W. L. Wood and P. Schuerch, J. Environ. Eng. 121, 258 (1995).
Municipal Wastewater Disinfection, Design Manual. US EPA, Cincinnati (1986).
A. D. Lyn, L. Chiu and E. R. Blatchley, III, J. Environ. Eng. 125, 7 (1999).
Metodi analitici per le acque. Quaderni dell'Istituto di Ricerca sulle acque del CNR (1976).
A. E. Greenberg, L. S. Cresceri and A. D. Eaton, Standard Methods for the Examination of Water and Wastewater. American Public Health Association (1992).
D. R. Duling, J. Magn. Reson. Series B 104, 105 (1994).
C. P. Poole, Electron Spin Resonance. A Comprehensive Treatise of Experimental Techniques. Wiley Interscience, New York (1967).
Spartan Version 5.1.3. Wavefunction Inc., 18401 Von Karman Avenue, Suite 370, Irvine, CA 92612, USA.
R. C. Weast (Ed.), in: Handbook of Chemistry and Physics, 57th edn, p. F-234. CRC Press, Cleveland, Ohio (1976).
R. P. Mason, P. M. Hanna, M. J. Burkitt and M. B. Kadjiska, Environ. Health Perspect. 102, 33 (1994).
H. Chick, J. Hygiene 8, 131 (1908).
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Bianchini, R., Calucci, L., Lubello, C. et al. Intermediate free radicals in the oxidation of wastewaters. Research on Chemical Intermediates 28, 247–256 (2002). https://doi.org/10.1163/156856702320267154
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DOI: https://doi.org/10.1163/156856702320267154