Sonochemical degradation of 2,3,7,8-tetrachlorodibenzo-p-dioxins in aqueous solution with Fe(III)/UV system

被引：28

作者：

Katsumata, Hideyuki ^{[1
]}

Kaneco, Satoshi

Suzuki, Tohru

Ohta, Kiyohisa

Yobiko, Yoshihiro

机构：

[1] Mie Univ, Grad Sch Engn, Dept Chem Mat, Tsu, Mie 5148507, Japan

[2] Mie Univ, Environm & Preservat Ctr, Tsu, Mie 5148507, Japan

[3] Environm Chem Grp, Technol Res Inst Osaka Prefecture, Osaka 5941157, Japan

来源：

CHEMOSPHERE | 2007年 / 69卷 / 08期

关键词：

2,3,7,8-tetrachlorodibenzo-p-dioxin; ultrasonic irradiation; Fenton reaction; hydroxyl radical;

D O I：

10.1016/j.chemosphere.2007.05.054

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

2,3,7,8-Tetrachlorodibenzo-p-dioxin (2,3,7,8-TeCDD) was rapidly decreased by sonication in aqueous solution. The degradation efficiency was strongly influenced by ultrasonic power and reaction temperature. An initial 2,3,7,8-TeCDD concentration of 20 ng 1(-1) was completely degraded within 60 min under sonochemical conditions using a 20 kHz frequency with a 150 W ultrasound power. The activation energy is 21.9 U/mol in the temperature range of 10-40 degrees C, suggesting a diffusion-controlled reaction. To increase the efficiency of 2,3,7,8-TeCDD treatment, degradation' system combined ultrasound with Fe(111) (2 x 10(-4) Mol 1(-1)) and UV irradiation. Both UV and Fe(III) induced Fenton, Fenton-like and photo-Fenton reactions, leading to additional OH, radicals and rapid 2,3,7,8-TeCDD removal. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1261 / 1266

页数：6

共 38 条

[1] Sonochemistry in environmental remediation. 1. Combinative and hybrid sonophotochemical oxidation processes for the treatment of pollutants in water [J].

Adewuyi, YG .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (10) :3409-3420

[2]

[Anonymous], 1988, ULTRASOUND ITS CHEM, DOI DOI 10.1121/1.398864

[3] Reductive dechlorination of 1,2,3,4-tetrachlorodibenzo-p-dioxin and its products by anaerobic mixed cultures from Saale river sediment [J].

Ballerstedt, H ;

Kraus, A ;

Lechner, U .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (06) :1749-1753

[4] Degradation photoinduced by Fe(III): Method of alkylphenol ethoxylates removal in water [J].

Brand, N ;

Mailhot, G ;

Bolte, M .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1998, 32 (18) :2715-2720

[5] Solvent-specific photolytic behavior of octachlorodibenzo-p-dioxin [J].

Choi, J ;

Choi, W ;

Mhin, BJ .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2004, 38 (07) :2082-2088

[6] Photocatalytic degradation of polychlorinated dibenzo-p-dioxins on TiO2 film under UV or solar light irradiation [J].

Choi, W ;

Hong, SJ ;

Chang, YS ;

Cho, Y .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2000, 34 (22) :4810-4815

[7] Ultrasonic degradation of oxalic acid in aqueous solutions [J].

Duekkanci, M. ;

Guenduez, G. .

ULTRASONICS SONOCHEMISTRY, 2006, 13 (06) :517-522

[8] Aquatic photodegradation of polychlorinated dibenzofurans: Rates and photoproduct analysis [J].

Friesen, KJ ;

Foga, MM ;

Loewen, MD .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1996, 30 (08) :2504-2510

[9] Sonochemical decomposition of volatile and non-volatile organic compounds - a comparative study [J].

Goel, M ;

Hu, HQ ;

Mujumdar, AS ;

Ray, MB .

WATER RESEARCH, 2004, 38 (19) :4247-4261

[10] A review of imperative technologies for wastewater treatment II: hybrid methods [J].

Gogate, PR ;

Pandit, AB .

ADVANCES IN ENVIRONMENTAL RESEARCH, 2004, 8 (3-4) :553-597

← 1 2 3 4 →