SOLAR-CATALYTIC INACTIVATION OF ESCHERICHIA-COLI IN AQUEOUS-SOLUTIONS USING TIO2 AS CATALYST

被引：38

作者：

ZHANG, PC ^{[1
]}

SCRUDATO, RJ ^{[1
]}

GERMANO, G ^{[1
]}

机构：

[1] SUNY COLL OSWEGO,DEPT BIOL,OSWEGO,NY 13126

来源：

CHEMOSPHERE | 1994年 / 28卷 / 03期

关键词：

D O I：

10.1016/0045-6535(94)90302-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Escherichia Coli (E. coli) was used as an index to assess the disinfection of water-borne microorganisms by sunlight irradiation in the presence of a titanium dioxide (TiO2, anatase) photocatelyst. With 23 min. irradiation, more than 99% of the spiked E. Coli was inactivated in water solutions. No significant changes in E. coli were observed in the irradiated control with no TiO2 added, or in the water solution that was not irradiated but contained TiO2. The inactivation of E. coli was attributed to the generation of free hydroxyl radicals during irradiation of TiO2 in the aqueous solution.

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页码：607 / 611

页数：5

相关论文

共 14 条

[1] PHOTO-DECHLORINATION OF PCBS IN PRESENCE OF TITANIUM-DIOXIDE IN AQUEOUS SUSPENSIONS [J].

CAREY, JH ;

LAWRENCE, J ;

TOSINE, HM .

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 1976, 16 (06) :697-701

[2] INACTIVATION OF ESCHERICHIA-COLI BY TITANIUM-DIOXIDE PHOTOCATALYTIC OXIDATION [J].

IRELAND, JC ;

KLOSTERMANN, P ;

RICE, EW ;

CLARK, RM .

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1993, 59 (05) :1668-1670

[3] RAPID MEASUREMENT OF AQUEOUS HYDROXYL RADICAL CONCENTRATIONS IN STEADY-STATE HO FLUX SYSTEMS [J].

IRELAND, JC ;

VALINIEKS, J .

CHEMOSPHERE, 1992, 25 (03) :383-396

[4]

MENASSA PE, 1988, ENV TECHNOLOGY LETT, V9

[5]

OLIVER BG, 1986, HOMOGENEOUS HETEROGE

[6]

OLLIS D F, 1991, Environmental Science and Technology, V25, P1523

[7] DEGRADATION PATHWAYS OF ATRAZINE UNDER SOLAR LIGHT AND IN THE PRESENCE OF TIO2 COLLOIDAL PARTICLES [J].

PELIZZETTI, E ;

CARLIN, V ;

MINERO, C ;

PRAMAURO, E ;

VINCENTI, M .

SCIENCE OF THE TOTAL ENVIRONMENT, 1992, 123 :161-169

[8] PHOTOCATALYTIC DEGRADATION OF POLYCHLORINATED DIOXINS AND POLYCHLORINATED-BIPHENYLS IN AQUEOUS SUSPENSIONS OF SEMICONDUCTORS IRRADIATED WITH SIMULATED SOLAR LIGHT [J].

PELIZZETTI, E ;

BORGARELLO, M ;

MINERO, C ;

PRAMAURO, E ;

BORGARELLO, E ;

SERPONE, N .

CHEMOSPHERE, 1988, 17 (03) :499-510

[9]

Sediak DL, 1991, ENVIRON SCI TECHNOL, V25, P1419

[10] EFFICIENT PHOTOCATALYTIC DEGRADATION OF CHLORAL HYDRATE IN AQUEOUS SEMICONDUCTOR SUSPENSION [J].

TANAKA, K ;

HISANAGA, T ;

HARADA, K .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1989, 48 (01) :155-159