Degradation of Di-(2-ethylhexyl) Phthalate (DEHP) by TiO2 Photocatalysis

被引：27

作者：

Chung, Ying-Chien ^{[1
]}

Chen, Chih-Yu ^{[2
]}

机构：

[1] China Inst Technol, Dept Biol Sci & Technol, Taipei 115, Taiwan

[2] Hsing Wu Coll, Dept Tourism, Taipei 244, Taiwan

来源：

WATER AIR AND SOIL POLLUTION | 2009年 / 200卷 / 1-4期

关键词：

Photocatalysis; Di-(2-ethylhexyl) phthalate; TiO2; Mechanism; N-BUTYL PHTHALATE; AQUEOUS-SOLUTION; MICROBIAL-DEGRADATION; DIETHYL PHTHALATE; DIBUTYL PHTHALATE; ACID ESTERS; WATER; PHOTOLYSIS; REMOVAL; DECOMPOSITION;

D O I：

10.1007/s11270-008-9903-9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photocatalytic degradation of di-(2-ethylhexyl) phthalate (DEHP) in solution using titanium dioxide (TiO2) was analyzed in this study. It was found that DEHP was completely removed in the solution after 150 min irradiation. The effect of different factors, such as photocatalyst amount, DEHP concentration, light intensity, pH, and temperature on photocatalytic degradation was investigated. The degradation mechanism of DEHP with proton and hydroxyl radicals oxidation were also studied. It is suggested that either ethylhexyl or ester chain scissions of the aliphatic part of DEHP was the dominant degradation mechanism of the process. The photocatalytic degradation process was well described by first-order reaction. The final mineralization product was carbon dioxide and the intermediate products were identified by GC-MS. Thus, the photocatalytic degradation treatment of DEHP in wastewater is a relative simple and fast method.

引用

页码：191 / 198

页数：8

共 30 条

[1] Removal of phthalate on modified activated carbon: application to the treatment of industrial wastewater [J].

Adhoum, N ;

Monser, L .

SEPARATION AND PURIFICATION TECHNOLOGY, 2004, 38 (03) :233-239

[2] Degradation of dibutyl phthalate by homogeneous photocatalysis with Fe(III) in aqueous solution [J].

Bajt, O ;

Mailhot, G ;

Bolte, M .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 33 (03) :239-248

[3] On the photolysis of phthalic acid dimethyl and diethyl ester: a product analysis study [J].

Balabanovich, A ;

Schnabel, W .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1998, 113 (02) :145-153

[4] Application of membrane techniques to water purification. Removal of phthalates [J].

Bodzek, M ;

Dudziak, M ;

Luks-Betlej, K .

DESALINATION, 2004, 162 (1-3) :121-128

[5] Photocatalytic degradation of di(2-ethylhexyl) phthalate adsorbed by chitin A [J].

Chan, C. M. ;

Wong, K. H. ;

Chung, W. K. ;

Chow, T. S. ;

Wong, P. K. .

WATER SCIENCE AND TECHNOLOGY, 2007, 56 (07) :125-134

[6] Anaerobic degradation of diethyl phthalate, di-n-butyl phthalate, and di-(2-ethylhexyl) phthalate from river sediment in Taiwan [J].

Chang, BV ;

Liao, CS ;

Yuan, SY .

CHEMOSPHERE, 2005, 58 (11) :1601-1607

[7] Removal of phthalate esters by α-cyclodextrin-linked chitosan bead [J].

Chen, Chih-Yu ;

Chen, Chling-Chang ;

Chung, Ying-Chien .

BIORESOURCE TECHNOLOGY, 2007, 98 (13) :2578-2583

[8] Biosynthesis of di-(2-ethylhexyl) phthalate (DEHP) and di-n-butyl phthalate (DBP) from red alga-Bangia atropurpurea [J].

Chen, CY .

WATER RESEARCH, 2004, 38 (04) :1014-1018

[9] Degradation of di-n-butyl phthalate using photoreactor packed with TiO2 immobilized on glass beads [J].

Chiou, Chyow-San ;

Shie, Je-Lueng ;

Chang, Ching-Yuan ;

Liu, Cheng-Chung ;

Chang, Chang-Tang .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 137 (02) :1123-1129

[10] PHOTODECHLORINATION OF POLYCHLOROBENZENE CONGENERS IN SURFACTANT MICELLE SOLUTIONS [J].

CHU, W ;

JAFVERT, CT .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1994, 28 (13) :2415-2422

← 1 2 3 →