Photocatalytic and photoelectrocatalytic humic acid removal and selectivity of TiO2 coated photoanode

被引：63

作者：

Selcuk, Huseyin ^{[1
]}

Bekbolet, Miray ^{[2
]}

机构：

[1] Pamukkale Univ, Fac Engn, Dept Environm Engn, TR-20014 Kinikli Denizli, Turkey

[2] Bogazici Univ, Inst Environm Sci, TR-80815 Bebek, Turkey

来源：

CHEMOSPHERE | 2008年 / 73卷 / 05期

关键词：

Titanium dioxide; Photocatalytic treatment; Photoelectrocatalytic treatment; Humic acid; Selectivity; Chlorine generation;

D O I：

10.1016/j.chemosphere.2008.05.069

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, photocatalytic (PC) and photoelectrocatalytic (PEC) treatment methods were comparatively investigated as a possible means of removing humic acid (HA) following absorbance at 254 nm (UV254) and total organic carbon (TOC) analysis. The enhanced HA degradation rates were obtained in the PEC system over the conventional PC process under acidic, neutral and alkaline conditions. Preliminary and binary experiments were performed to determine the selectivity of the photoanode in terms of HA and chloride oxidation. TOC, chlorine and photocurrent parameters proved that HA was selectively removed before chlorine generation. The inhibitory effect of carbonate ions on the performance of photoanode was also studied under different pH values. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：854 / 858

页数：5

共 32 条

[1] EFFECTS OF COMMON INORGANIC ANIONS ON RATES OF PHOTOCATALYTIC OXIDATION OF ORGANIC-CARBON OVER ILLUMINATED TITANIUM-DIOXIDE [J].

ABDULLAH, M ;

LOW, GKC ;

MATTHEWS, RW .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (17) :6820-6825

[2]

[Anonymous], 1995, STANDARD METHODS EXA, V19th

[3] The influence of solution matrix on the photocatalytic removal of color from natural waters [J].

Bekbölet, M ;

Boyacioglu, Z ;

Özkaraova, B .

WATER SCIENCE AND TECHNOLOGY, 1998, 38 (06) :155-162

[4] THE EVALUATION OF COLOR IN NATURAL-WATERS [J].

BENNETT, LE ;

DRIKAS, M .

WATER RESEARCH, 1993, 27 (07) :1209-1218

[5] CRITICAL-REVIEW OF RATE CONSTANTS FOR REACTIONS OF HYDRATED ELECTRONS, HYDROGEN-ATOMS AND HYDROXYL RADICALS (.OH/.O-) IN AQUEOUS-SOLUTION [J].

BUXTON, GV ;

GREENSTOCK, CL ;

HELMAN, WP ;

ROSS, AB .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1988, 17 (02) :513-886

[6] Immobilisation of TiO2 powder for the treatment of polluted water [J].

Byrne, JA ;

Eggins, BR ;

Brown, NMD ;

McKinney, B ;

Rouse, M .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 17 (1-2) :25-36

[7] Involvement of humic substances in regrowth [J].

Camper, AK .

INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY, 2004, 92 (03) :355-364

[8] Photoelectrocatalytic and photocatalytic disinfection of E-coli suspensions by titanium dioxide [J].

Christensen, PA ;

Curtis, TP ;

Egerton, TA ;

Kosa, SAM ;

Tinlin, JR .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2003, 41 (04) :371-386

[9] The photocatalytic removal of bacterial pollutants from drinking water [J].

Dunlop, PSM ;

Byrne, JA ;

Manga, N ;

Eggins, BR .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2002, 148 (1-3) :355-363

[10] Investigation of retardation effects on the titanium dioxide photodegradation system [J].

Epling, GA ;

Lin, C .

CHEMOSPHERE, 2002, 46 (06) :937-944

← 1 2 3 4 →