Degradation of 2,4-dichlorophenol in aqueous solution by sono-Fenton method

被引：43

作者：

Ranjit, Praveena Juliya Dorathi ^{[1
]}

Palanivelu, Kandasany ^{[2
]}

Lee, Chang-Soo ^{[2
,3
]}

机构：

[1] Anna Univ, Ctr Environm Studies, Madras 600025, Tamil Nadu, India

[2] Chungnam Natl Univ, BK21 E2M Program, Taejon 305764, South Korea

[3] Chungnam Natl Univ, Dept Chem Engn, Taejon 305764, South Korea

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2008年 / 25卷 / 01期

关键词：

2,4-dichlorophenol; degradation; Sono-Fenton method;

D O I：

10.1007/s11814-008-0020-7

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study presents the results of the Sono-Fenton process for the degradation of 2,4-dichlorophenol (DCP). The influential parameters such as H2O2, Fe2+ and pH for the Sono-Fenton process were investigated. Sono-Fenton method was found to be the best one for degradation efficiency of DCP when compared with that of the Fenton process. The optimum concentrations for the degradation of DCP using conventional Fenton's method were found to be 20 mg/L of Fe2+ and 580 mg/L of H2O2 at pH 2.5. In the case of Sono-Fenton, the optimal concentrations were found to be 10 mg/L of Fe2+ and 400 mg/L of H2O2 at pH 2.5. Sono-Fenton method resulted in the reduction of required Fe2+ concentration (50%) and H2O2 concentration (31%). In addition, this method could be applicable even at pH 5.0 and a degradation efficiency of DCP was 77.6%. Kinetic studies for the degradation of DCP proved that the degradation of DCP tends to follow pseudo first order reaction and the rate constant was found to be 7 x 10(-4) min(-1).

引用

页码：112 / 117

页数：6

共 28 条

[1] CHLORINATED PHENOLS - OCCURRENCE, TOXICITY, METABOLISM, AND ENVIRONMENTAL-IMPACT [J].

AHLBORG, UG ;

THUNBERG, TM .

CRC CRITICAL REVIEWS IN TOXICOLOGY, 1980, 7 (01) :1-35

[2]

*AM PUBL HLTH ASS, 1995, STAND METH EX WAT WA

[3]

BALFANZ J, 1991, APPL MICROBIOL BIOT, V35, P662, DOI 10.1007/BF00169634

[4] Innovative reactor technology for selective oxidation of toxic organic pollutants in wastewater by ozone [J].

Boncz, MA ;

Bruning, H ;

Rulkens, WH .

WATER SCIENCE AND TECHNOLOGY, 2003, 47 (10) :17-24

[5] Chemical degradation of aromatic amines by Fenton's reagent [J].

Casero, I ;

Sicilia, D ;

Rubio, S ;

PerezBendito, D .

WATER RESEARCH, 1997, 31 (08) :1985-1995

[6] Contribution of the ozonation pre-treatment to the biodegradation of aqueous solutions of 2,4-dichlorophenol [J].

Contreras, S ;

Rodríguez, M ;

Al Momani, F ;

Sans, C ;

Esplugas, S .

WATER RESEARCH, 2003, 37 (13) :3164-3171

[7]

EISENHAUER HR, 1964, J WATER POLLUT CON F, V36, P1116

[8] The enhancement of 2-chlorophenol degradation by a mixed microbial community when augmented with Pseudomonas putida CP1 [J].

Farrell, A ;

Quilty, B .

WATER RESEARCH, 2002, 36 (10) :2443-2450

[9]

HOFFMANN MR, 1996, ULTRASON SONOCHEM, V3, P163

[10] Ultrasound as a catalyzer of aqueous reaction systems: the state of the art and environmental applications [J].

Ince, NH ;

Tezcanli, G ;

Belen, RK ;

Apikyan, IG .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 29 (03) :167-176

← 1 2 3 →