Biodegradability enhancement of a pesticide-containing bio-treated wastewater using a solar photo-Fenton treatment step followed by a biological oxidation process

Vilar, Vítor J.P.; Moreira, Francisca C.; Ferreira, Ana C.C.; Sousa, M.A.; Gonçalves, C.; Alpendurada, M.F.

doi:10.1016/j.watres.2012.06.038

Cited by 89 publications

(28 citation statements)

References 34 publications

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“…Indeed, a chemical pre-treatment of an AOP [mainly due to the production of powerful oxidizing agents such as Á OH ðE Á ð Á OH=H 2 OÞ ¼ 2:8 V=SHEÞ] may convert recalcitrant organic compounds to biodegradable intermediates, which are subsequently treated biologically; thus, the associated costs are reduced. For example, the photo-Fenton process has been combined with biological treatment to treat water polluted by pesticides (Vilar et al 2012), and to improve the biodegradability index of organic effluents in order to enhance the efficiency of biochemical treatment (Asha et al 2014). Lotio et al (2014) were concerned about the ozonation process coupled with biological process to remove color, COD, and total nitrogen of textile yarn dyeing effluents.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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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“…Pollutants are transformed into biodegradable or less toxic intermediates in AOPs (Chong et al, 2010;HerreraeMeli an et al, 2012;Vitor et al, 2012;Marsolek et al, 2014) and then underwent economical biological degradation. Reactive oxygen species (ROS), such as hydroxyl radical, superoxide radical, and hydrogen peroxide, are generated during photocatalysis, and UV illuminants are typical disinfection substances.…”

Section: Introductionmentioning

confidence: 99%

Phenol removal and biofilm response in coupling of visible-light-driven photocatalysis and biodegradation: Effect of hydrothermal treatment temperature

Zou

Zhou

et al. 2015

International Biodeterioration & Biodegradation

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“…Treatment of highly contaminated water (such as agricultural or industrial wastewater) with classical photo-Fenton has also been studied extensively [19]. Examples include wastewater from olive mills [20], wineries [21], cork industries [22] landfill leachate [23] and agrochemicals [24]. However, the comparative use of Fe(III)-EDDS at neutral pH for treating water containing high contaminant concentrations has never been evaluated.…”

Section: Introductionmentioning

confidence: 99%

Benefits and limitations of using Fe(III)-EDDS for the treatment of highly contaminated water at near-neutral pH

Papoutsakis

Brites-Nóbrega

Pulgarín

et al. 2015

Journal of Photochemistry and Photobiology A: Chemistry

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Biodegradability enhancement of a pesticide-containing bio-treated wastewater using a solar photo-Fenton treatment step followed by a biological oxidation process

Cited by 89 publications

References 34 publications

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

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

Phenol removal and biofilm response in coupling of visible-light-driven photocatalysis and biodegradation: Effect of hydrothermal treatment temperature

Benefits and limitations of using Fe(III)-EDDS for the treatment of highly contaminated water at near-neutral pH

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