Decontamination of industrial wastewater containing pesticides by combining large-scale homogeneous solar photocatalysis and biological treatment

Zapata, A.; Oller, Isabel; Sirtori, Carla; Rodrı́guez, Antonio Rodrı́guez; Pérez, J.A. Sánchez; López, Antonio; Mezcúa, Milagros; Malato, Sixto

doi:10.1016/j.cej.2010.03.042

Cited by 80 publications

(28 citation statements)

References 32 publications

(33 reference statements)

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“…Due to the lack of industrial experience in photo-Fenton treatment of wastewater, as far as we know only two plants have been installed [32,33], thus there is little knowledge about investment costs. Muñoz et al [27] reported an investment cost of 131,000 D for a 100 m 2 photo-Fenton plant with solar compound parabolic collectors (CPCs) with a useful life of 15 years.…”

Section: Paracetamol Removal At Pilot Plant Scale By Photo-fentonmentioning

confidence: 98%

Economic evaluation of the photo-Fenton process. Mineralization level and reaction time: The keys for increasing plant efficiency

Santos‐Juanes

Martín

Gómez

et al. 2011

Journal of Hazardous Materials

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Section: Paracetamol Removal At Pilot Plant Scale By Photo-fentonmentioning

confidence: 98%

Economic evaluation of the photo-Fenton process. Mineralization level and reaction time: The keys for increasing plant efficiency

Santos‐Juanes

Martín

Gómez

et al. 2011

Journal of Hazardous Materials

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“…Although these values were \0.33 (for t* \ 30 min), one can note that there is still an increase in biodegradability. Previous works also demonstrated that AOPs (ozonation, photocatalysis …) increase biodegradability of non-biodegradable organic pollutants (Mantzavinos and Psillakis 2004;Farre et al 2005;Zapata et al 2010). Since mineralization was low (Fig.…”

Section: Effect Of Plasma On the Biodegradabilitymentioning

confidence: 99%

Gliding arc discharge-assisted biodegradation of crystal violet in solution with Aeromonas hydrophila strain

Njiki

Kamgang‐Youbi

Laminsi

et al. 2015

Int. J. Environ. Sci. Technol.

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The gliding arc discharge, which is a source of nonthermal plasma, was used to enhance the biodegradation of crystal violet (CV), a triphenylmethane nonbiodegradable organic dye. The determination of the biodegradability index, i.e., biochemical oxygen demand (BOD 5 )/chemical oxygen demand (COD) ratio, and the total organic carbon measurement were used to assess the biodegradability. For the biological treatment alone, a bacterial strain of Aeromonas hydrophila (8 9 10 8 -CFU mL -1 ) bleached 42 % of CV solution (50 mg L -1 ) after 12-h incubation. The bleaching rate was enhanced by increasing the initial bacterial concentration; however, a drop in the bleaching rate was noted when CV concentration was increased. For the plasma process alone, a 15-min treatment resulted in a color removal of 49.7 %, at a mineralization rate of 12.2 %, thereby increasing the BOD 5 /COD ratio from 0.11 to 0.23. There was an increase in the bleaching rate in temporal post-discharge conditions (i.e., self-continuity of reaction after the discharge was switched off): For 2 h of temporal post-discharge reaction, the color removal of the 15-min plasma-pre-treated CV increased to 55 %. The disappearance of color during each treatment method followed the first-order kinetics. With regard to the combined plasma/biological treatment process, the 15-min plasma-pre-treated sample was bleached at 92 % by A. hydrophila after 2-h incubation and completely bleached for 6 h. Therefore, there is a positive synergism of bacterial and plasma treatments. This combined treatment is useful in reducing the energy involved in complete mineralization of wastewater containing nonbiodegradable dyes.

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“…Most azo dyes are resistant to biodegradation under aerobic conditions and could be toxic to microorganisms and plants if they are discharged without proper treatment (Gupte et al 2013;Patil and Jadhav 2013;Przytás et al 2013). Studies in the literature show that advanced oxidation processes (AOPs), which generate hydroxyl radical, can rupture dye chromophore and convert recalcitrant azo dyes into carbon dioxide, water, and inorganic ions (Goi et al 2010;Zapata et al 2009Zapata et al , 2010Lopez et al 2004;Rameshraja and Suresh 2011;Shafieiyoun et al 2012;Asaithambi et al 2014). Among the AOPs studied, Fenton or photo-Fenton process has many advantages because it is a homogeneous process and favors a better contact between reagent species without mass transfer limitation.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Acid Blue 161 by Fenton and photo-Fenton processes

Trovó

Hassan²,

Sillanpää

et al. 2015

Int. J. Environ. Sci. Technol.

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Degradation kinetics of azo dye, Acid Blue 161 (AB161), by Fenton and photo-Fenton processes in aqueous solution was investigated. At pH 3.5, the effects of H 2 O 2 , Fe 2? , and H 2 O 2 /Fe 2? molar ratios, on the AB161 decolorization kinetic rates, were evaluated. Experimental results confirmed that the optimal H 2 O 2 /Fe 2? molar ratio of 12 is close to the theoretical value of 11 as predicted by previously developed model. The influence of azo bond loading (L azo bond ), from 0.25 to 1.0, and pH values from 2.5 to 4.0 were evaluated on AB161 decolorization kinetic rates. A correlation between the natural logarithm of the decolorization rates and L azo bond was established at the different pH values. The decolorization rate increased linearly with decreasing L azo bond , in the order of pH: 3.5 [ 3.0 [ 2.5 [ 4.0. UV radiation of Fenton processes increases degradation of AB161 more than 40 % due to the regeneration of Fe 2? through photo-catalytic reactions. This phenomenon was confirmed by measuring H 2 O 2 concentration during the photo-Fenton processes. The results suggest that Fenton processes can effectively decolorize or degrade wastewater containing azo dye, AB161. Photo-Fenton processes may further increase the degradation efficiency of AB161 by 40 %.

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Decontamination of industrial wastewater containing pesticides by combining large-scale homogeneous solar photocatalysis and biological treatment

Cited by 80 publications

References 32 publications

Economic evaluation of the photo-Fenton process. Mineralization level and reaction time: The keys for increasing plant efficiency

Economic evaluation of the photo-Fenton process. Mineralization level and reaction time: The keys for increasing plant efficiency

Gliding arc discharge-assisted biodegradation of crystal violet in solution with Aeromonas hydrophila strain

Degradation of Acid Blue 161 by Fenton and photo-Fenton processes

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