Photocatalytic treatment of water soluble pesticide by advanced oxidation technologies using UV light and solar energy

被引:51
作者
Shawaqfeh, Ahmad T. [1 ]
Al Momani, Fares A. [1 ]
机构
[1] Mutah Univ, Dept Chem Engn, Al Karak, Jordan
关键词
Pesticide; Mineralization; Solar; UV; Photo-Fenton; AQUEOUS-SOLUTION; HYDROGEN-PEROXIDE; DEGRADATION; REMOVAL; PHOTODEGRADATION; MINERALIZATION; IRRADIATION; PH;
D O I
10.1016/j.solener.2010.03.020
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Advanced oxidation technologies (AOTs) using UV lamps and solar radiation were investigated for treating aqueous solutions of pesticide (Vydine) One group of experiments was conducted using UV light irradiated at wavelengths of 254 nm (UV254) and 350 nm (UV350) Another similar group was conducted using solar radiation incident during the months of March (Sol-Mar) and June (Sol-Jun) Experimental measurements of pesticide concentration. TOC mineralization, COD and BOD were monitored and recorded Results showed that AOTs with (UV254) irradiation or (Sol-Jun) solar radiation were more efficient than those with (UV350) or (Sol-Mar) irradiations Pesticide eliminations achieved by using UV254 and Sol-Jun were 50% and 32%, respectively, while the maximum Vydine elimination achieved by UV350 or Sol-Mar was 20%. The use UV254 with photo-Fenton increased the pesticide elimination to more than 95% Photo-degradation rates of Vydine in the presence of TiO2 followed the order of UV254 > Sol-Jun > Sol-Mar > UV350 The photo-catalytic reactions of pesticide followed pseudo first-order kinetics The calculated rate constants were 0015, 0012, 0 009 and 0 0065 min(-1) when using UV254, Sol-Jun, Sol-Mar and UV350, respectively Degradation processes examined under the conditions of the present work were able to mineralize the pesticide (Vydine) totally and/or to improve the treated solution biodegradability. Photo-Fenton and TiO2 mineralized all the organic matter content from the solution in 230 min Moreover, BOD5 was increased from 0 to 9 mg O-2/L when UV254 irradiation was only used and increased to 50 mg O-2/L following the use of photo-Fenton treatment (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码:1157 / 1165
页数:9
相关论文
共 35 条
[11]   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
[12]   Catalytic decomposition of hydrogen peroxide by Fe(III) in homogeneous aqueous solution: Mechanism and kinetic modeling [J].
De Laat, J ;
Gallard, H .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1999, 33 (16) :2726-2732
[13]   Spectral dependencies of the quantum yield of photochemical processes on the surface of nano/micro-particulates of wide-band-gap metal oxides. IV. Theoretical modeling of the activity and selectivity of semiconductor photocatalysts with inclusion of a subsurface electric field in the space charge region [J].
Emeline, AV ;
Frolov, AV ;
Ryabchuk, VK ;
Serpone, N .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (29) :7109-7119
[14]   Applicability of the Photo-Fenton method for treating water containing pesticides [J].
Fallmann, H ;
Krutzler, T ;
Bauer, R ;
Malato, S ;
Blanco, J .
CATALYSIS TODAY, 1999, 54 (2-3) :309-319
[15]   Near-UV molar absorptivities of acetone, alachlor, metolachlor, diazinon and dichlorvos in aqueous solution [J].
Feigenbrugel, V ;
Loew, C ;
Le Calvé, S ;
Mirabel, P .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2005, 174 (01) :76-81
[16]   RATE CONSTANTS FOR REACTION OF HYDROXYL RADICALS WITH SEVERAL DRINKING-WATER CONTAMINANTS [J].
HAAG, WR ;
YAO, CCD .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1992, 26 (05) :1005-1013
[17]   Photocatalytic degradation of phenols in aqueous solution under irradiation of 254 and 185 nm UV light [J].
Han, WY ;
Zhu, WP ;
Zhang, PY ;
Zhang, Y ;
Li, LS .
CATALYSIS TODAY, 2004, 90 (3-4) :319-324
[18]   Heterogeneous photocatalysis: fundamentals and applications to the removal of various types of aqueous pollutants [J].
Herrmann, JM .
CATALYSIS TODAY, 1999, 53 (01) :115-129
[19]  
Kagan J., 1993, Organic Photochemistry: Principles and Applications, V1st
[20]   Destruction of toxic organics in water by an injection-type downflow UV/O3 oxidation reactor [J].
Kuo, WS .
OZONE-SCIENCE & ENGINEERING, 1999, 21 (05) :539-550