Influence of variables of the combined coagulation–Fenton-sedimentation process in the treatment of trifluraline effluent

Martins, Ayrton F.; Vasconcelos, Tibiriçá G.; Wilde, Marcelo L.

doi:10.1016/j.jhazmat.2005.06.028

Cited by 19 publications

(11 citation statements)

References 30 publications

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“…Nevertheless, few of them have based their research on real samples [36][37][38]. As a result, the other concomitants of the solution consume the oxidants which mean that they are, for example, less available to react with the target compounds.…”

Section: Remarks and Conclusionmentioning

confidence: 99%

Ciprofloxacin in hospital effluent: Degradation by ozone and photoprocesses

Vasconcelos

Kümmerer²,

Henriques

et al. 2009

Journal of Hazardous Materials

106

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Section: Remarks and Conclusionmentioning

confidence: 99%

Ciprofloxacin in hospital effluent: Degradation by ozone and photoprocesses

Vasconcelos

Kümmerer²,

Henriques

et al. 2009

Journal of Hazardous Materials

106

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“…The Fenton treatment can be implemented not only alone, but also in tandem with other processes (Martins et al 2005). Addition of the Fenton reagent along with the components of other treatment process often leads to enhanced degradation.…”

Section: Introductionmentioning

confidence: 99%

Fenton treatment efficacy for the purification of different kinds of wastewater

Trapido¹,

Kulik²,

Goi³

et al. 2009

Water Science and Technology

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The Fenton chemistry comprises both the classical Fenton reagent and its modification, so-called Fenton-like techniques, which have received great attention as a promising technology for wastewater treatment. In the present study real wastewater from different sources (leachate from oil shale semicoke landfill, pharmaceutical effluents from medical ointment production, municipal landfill leachate and wastewater originated from food-processing) were treated by means of Fenton/Fenton-like systems. The effectiveness of wastewater treatment was assessed by COD removal. Additionally, biodegradability improvement (BOD7/COD) and acute toxicity reduction of investigated wastewater samples were observed. The application of the Fenton chemistry to wastewater samples with different origin resulted generally in 70% or higher COD removal. Thus, the Fenton could be effectively applied both as a single treatment method and pre-treatment step to improve subsequent biodegradability of wastewater effluents.

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“…In addition, experiments at the centre points facilitate the determinations of rotatability or orthogonality of the design and ease of fitting the quadratic polynomials with at least one point (Tarley et al, 2009 ] and reaction time. However, pH was not considered as a specific variable due to the several reported literature that established the optimal pH at about 3 (Hermosilla et al, 2009;Ay et al, 2009;Martins et al, 2005). This was based on limitation of Fenton reagents performance in different pH media.…”

Section: Experimental Design Data Analysis and Process Optimizationmentioning

confidence: 99%

“…The ranges of values used in this study were chosen to fall within the reported limits (Benatti et al, 2006;Martins et al, 2010;Martins et al, 2005 ]. However, recent studies report use of mass of reagents instead of molar concentration (Martins et al, 2005;Benatti et al, 2006;Martins et al, 2010;Bach et al, 2010). We thus, adopted the mass approach to determine the necessary amounts of the reagents that would maintain the ratio of the designed matrix (Table 1).…”

Section: Oxidant To Catalyst Mass Ratio [H 2 O 2 ]:[Fe 2+ ]mentioning

confidence: 99%

Application of response surface methodology in process parameters optimization for phenol mineralization using Fentons peroxidation

Hasan¹,

Mohd²,

Daud³

2011

Afr. J. Biotechnol.

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Adverse effect of the highly biorecalcitrant compound phenol to the environment is well established and its concentrations in industrial effluents vary greatly from 2.8 to 6,800 mg/l depending on the source. Fenton process effectively mineralises to CO 2 and H 2 O but reported works consumed more reagents and require longer reaction times. Due to the strong interaction between the several predictor variables in the Fenton oxidation, response surface methodology was used to optimise the mineralization treatment. Efficient, faster and economical operating conditions for phenol removal were explored by investigating four parameters namely the concentration ratio of hydrogen peroxide to phenol - ((H 2 O ], respectively. The soluble iron content of the analysed supernatant was found to be below the 15 mg/l (the maximum limit allowable for total iron discharges required by common regulative subscribed). This indicated that, the Fenton reagents were utilised during the peroxidation reaction evident from the almost near consumption of all Fe 2+ introduced in about 85% of the samples, thus, negating the need for immobilising the Fe 2+ catalyst or its removal by post treatment. The work proves that the optimized Fenton process can be potentially used for treatment of any phenol containing wastewater.

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Influence of variables of the combined coagulation–Fenton-sedimentation process in the treatment of trifluraline effluent

Cited by 19 publications

References 30 publications

Ciprofloxacin in hospital effluent: Degradation by ozone and photoprocesses

Ciprofloxacin in hospital effluent: Degradation by ozone and photoprocesses

Fenton treatment efficacy for the purification of different kinds of wastewater

Application of response surface methodology in process parameters optimization for phenol mineralization using Fentons peroxidation

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