Microcystin-LR degradation by solar photo-Fenton, UV-A/photo-Fenton and UV-C/H2O2: a comparative study

被引：28
作者：
de Freitas, Adriane M. [1 ]
Sirtori, Carla [2 ]
Lenz, Cesar A. [3 ]
Peralta Zamora, Patricio G. [4 ]
机构：
[1] Fed Technol Univ Parana UTFPR, Dept Chem & Biol, Curitiba, Parana, Brazil
[2] Fed Univ Latin Amer Integrat UNILA, Foz Do Iguacu, PR, Brazil
[3] Parana Inst Technol TECPAR, Curitiba, Parana, Brazil
[4] Fed Univ Parana UFPR, Dept Chem, Tecnotrater Grp, Curitiba, Parana, Brazil
来源：
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES | 2013年 / 12卷 / 04期
关键词：
ADVANCED OXIDATION PROCESSES; PHOTOCATALYTIC TREATMENT; WATER; REMOVAL; LIGHT; H2O2; MINERALIZATION; METABOLITES; TOXIN;
D O I：
10.1039/c2pp25233c
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
This work assessed the effectiveness of several methods on degradation of microcystin-LR (MC-LR) by different Advanced Oxidation Processes, like solar photo-Fenton, UV-A/photo-Fenton and UV-C/H2O2. UV-C/H2O2 and UV-A/photo-Fenton processes were carried out in a bench scale photochemical apparatus and the solar photo-Fenton treatment was performed in a CPC photoreactor. MC-LR degradation was monitored by LC-ESI-MS/MS and kinetic parameters were calculated for all systems evaluated. The results demonstrated that UV-C/H2O2 was the most efficient method, showing a reduction of over 90% of initial MC-LR after 5 min of reaction. Solar and photo-Fenton/UVA had a rate decrease of 88 and 76% after the same time, respectively. The kinetic study indicated that the solar photo-Fenton and artificial radiation (UV-A) processes were very similar in their efficiency. The use of sunlight instead of artificial UV radiation significantly reduced the cost of photocatalytic treatment systems; it is also an environmentally friendly method, since it utilizes renewable energy.
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页码：696 / 702
页数：7
相关论文
共 43 条
[1]   Degradation of cyanobacteria toxin by advanced oxidation processes [J].
Al Momani, Fares ;
Smith, Daniel W. ;
El-Din, Mohamed Gamal .
JOURNAL OF HAZARDOUS MATERIALS, 2008, 150 (02) :238-249
[2]   Advanced oxidation processes (AOP) for water purification and recovery [J].
Andreozzi, R ;
Caprio, V ;
Insola, A ;
Marotta, R .
CATALYSIS TODAY, 1999, 53 (01) :51-59
[3]  
[Anonymous], 1995, STANDARD METHODS EXA, V19th
[4]   Human intoxication by microcystins during renal dialysis treatment in Caruaru-Brazil [J].
Azevedo, SMFO ;
Carmichael, WW ;
Jochimsen, EM ;
Rinehart, KL ;
Lau, S ;
Shaw, GR ;
Eaglesham, GK .
TOXICOLOGY, 2002, 181 :441-446
[5]   Photocatalytic water treatment: solar energy applications [J].
Bahnemann, D .
SOLAR ENERGY, 2004, 77 (05) :445-459
[6]   Degradation of microcystin-LR toxin by Fenton and photo-Fenton processes [J].
Bandala, ER ;
Martínez, D ;
Martínez, E ;
Dionysiou, DD .
TOXICON, 2004, 43 (07) :829-832
[7]   Oxidation of several chlorophenolic derivatives by UV irradiation and hydroxyl radicals [J].
Benitez, FJ ;
Beltran-Heredia, J ;
Acero, JL ;
Rubio, FJ .
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2001, 76 (03) :312-320
[8]   Compound parabolic concentrator technology development to commercial solar detoxification applications [J].
Blanco, J ;
Malato, S ;
Fernández, P ;
Vidal, A ;
Morales, A ;
Trincado, P ;
Oliveira, JC ;
Minero, C ;
Musci, M ;
Casalle, C ;
Brunotte, M ;
Tratzky, S ;
Dischinger, N ;
Funken, KH ;
Sattler, C ;
Vincent, M ;
Collares-Pereira, M ;
Mendes, JF ;
Rangel, CM .
SOLAR ENERGY, 1999, 67 (4-6) :317-330
[9]   CYANOBACTERIA SECONDARY METABOLITES - THE CYANOTOXINS [J].
CARMICHAEL, WW .
JOURNAL OF APPLIED BACTERIOLOGY, 1992, 72 (06) :445-459
[10]   Hydrogen peroxide enhanced photocatalytic oxidation of microcystin-LR using titanium dioxide [J].
Cornish, BJPA ;
Lawton, LA ;
Robertson, PKJ .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2000, 25 (01) :59-67
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