Intermediate free radicals in the oxidation of wastewaters

被引：63

作者：

Bianchini, R

Calucci, L

Lubello, C

Pinzino, C

机构：

[1] Polo Sci, Dipartimento Chim Organ, I-50019 Florence, Italy

[2] CNR, Ist Proc Chim Fis, I-56124 Pisa, Italy

[3] Univ Florence, Dipartimento Ingn Civile, I-50139 Florence, Italy

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2002年 / 28卷 / 2-3期

关键词：

radicals; oxidation; EPR; wastewater;

D O I：

10.1163/156856702320267154

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：247 / 256

页数：10

共 25 条

[1] A FAST, TIME AVERAGING DATA ACQUISITION-SYSTEM FOR THE PC-AT BUS [J].

AMBROSETTI, R ;

RICCI, D .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1991, 62 (09) :2281-2287

[2]

BALDRY MGC, 1998, IND BIOCIDES, V23

[3]

BLATCHLEY ER, 1995, J ENVIRON ENG-ASCE, V121, P258

[4]

Buda F, 2001, CHEM-EUR J, V7, P2775, DOI 10.1002/1521-3765(20010702)7:13<2775::AID-CHEM2775>3.0.CO

[5]

2-6

[6]

CHICK H, 1908, J HYGIENE, V8, P131

[7] SIMULATION OF MULTIPLE ISOTROPIC SPIN-TRAP EPR-SPECTRA [J].

DULING, DR .

JOURNAL OF MAGNETIC RESONANCE SERIES B, 1994, 104 (02) :105-110

[8]

Fenton H.J.H., 1894, J. Chem.Soc., V65, P899, DOI [DOI 10.1039/CT8946500899, 10.1039/CT8946500899]

[9] 5-(DIETHOXYPHOSPHORYL)-5-METHYL-1-PYRROLINE N-OXIDE - A NEW EFFICIENT PHOSPHORYLATED NITRONE FOR THE IN-VITRO AND IN-VIVO SPIN-TRAPPING OF OXYGEN-CENTERED RADICALS [J].

FREJAVILLE, C ;

KAROUI, H ;

TUCCIO, B ;

LEMOIGNE, F ;

CULCASI, M ;

PIETRI, S ;

LAURICELLA, R ;

TORDO, P .

JOURNAL OF MEDICINAL CHEMISTRY, 1995, 38 (02) :258-265

[10]

Greenberg A. E., 1992, STANDARD METHODS EXA

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