The role of ferrous ion in Fenton and photo-Fenton processes for the degradation of phenol

Kavitha, V.; Palanivelu, K.

doi:10.1016/j.chemosphere.2003.12.022

Cited by 503 publications

(250 citation statements)

References 31 publications

Supporting

Mentioning

231

Contrasting

Unclassified

Order By: Relevance

“…Both removals of MO in the system by darkness and sunlight irradiation within 120 min fluctuated from 6.0 to 11.0% which were attributed to the adsorption of the catalyst and possible homogeneous process, and the fluctuation of removal would be ascribed the unbalanced adsorption-desorption between the MO molecule and the catalyst. Meanwhile it indicates that the sunlight was not enough to promote the catalytic process when the solution is neutral, which was not as effective as Fenton reaction in the acidic solution [14]. On the other hand, 2.5 g of catalyst was sufficient to degrade 50 mg of MO from 1 l of aqueous solution after 80 min UV irradiation.…”

Section: Effects Of the Photo-fenton Experimentsmentioning

confidence: 91%

Catalytic oxidation of Methyl Orange by an amorphous FeOOH catalyst developed from a high iron-containing fly ash

Zhang

2010

Chemical Engineering Journal

105

View full text Add to dashboard Cite

Section: Effects Of the Photo-fenton Experimentsmentioning

confidence: 91%

Catalytic oxidation of Methyl Orange by an amorphous FeOOH catalyst developed from a high iron-containing fly ash

Zhang

2010

Chemical Engineering Journal

105

View full text Add to dashboard Cite

“…For both studied cases (H2C>2 = 257 and 1280mgL -1 ), nitrate was found at stoichiometric concentration, which indicates a degradation of the dye molecule. The presence of nitrate in the photo-treated effluent indicated that the dye molecule had been efficiently oxidized, since nitrogen-containing compounds forms NO3 - [60][61][62]. It was observed that nitrate concentration increased immediately after the first reaction instants, which means that nitrogen is being liberated directly from the Índigo molecule (Figs.…”

Section: Study Ofthe Biodegradabüity and Toxicity Ofthe Effluentmentioning

confidence: 99%

A ferrous oxalate mediated photo-Fenton system: Toward an increased biodegradability of indigo dyed wastewaters

Vedrenne

Vásquez-Medrano

Prato-Garcia

et al. 2012

Journal of Hazardous Materials

View full text Add to dashboard Cite

HIGHLIGHTS• índigo wastewaters are successfully treated with a solar assisted oxidation reaction.• Using ferrous oxalate complexes, the efficiency of the treatment increases.• Increasing peroxide concentrations did not improve the treatment substantially.• The best remováis of TOC and COD were reached with the smallest peroxide dose.• A final complete biodegradability was obtained for these wastewaters. ARTICLE INFO ABSTRACT Keywords:Advanced oxidation process Ferrous oxalate complex índigo dye Photo-Fenton BiodegradabilityThis study assessed the applicability of a ferrous oxalate mediated photo-Fenton pretreatment for indigodyed wastewaters as to produce a biodegradable enough effluent, likely of being derived to conventional biological processes. The photochemical treatment was performed with ferrous oxalate and hydrogen peroxide in a Compound Parabolic Concentrator (CPC) under batch operation conditions. The reaction was studied at natural pH conditions (5-6) with Índigo concentrations in the range of 6.67-33.33 mgL _1 , using a fixed oxalate-to-iron mass ratio (C204 2~/ Fe 2+ = 35) and assessing the system's biodegradability at low (257 mgL _1 ) and high (1280mgL _1 )FfcO2 concentrations. In order to seek the optimal conditions for the treatment of Índigo dyed wastewaters, an experimental design consisting in a statistical surface response approach was carried out. This analysis revealed that the best removal efficiencies for Total Organic Carbón (TOC) were obtained for low peroxide doses. In general it was observed that after 20 kj L _1 , almost every treated effluent increased its biodegradability from a BOD5/COD valué of 0.4. This increase in the biodegradability was confirmed by the presence of short chain carboxylic acids as intermedíate producís and by the mineralization of organic nitrogen into nitrate. Finally, an overall decrease in the LC50 for Artemia salina indicated a successful detoxification of the effluent.

show abstract

“…The use of UV light in combination with Fenton's reagent, that is, the so-called photoFenton process, is able to re-generate ferrous iron reducing ferric ions and producing additional hydroxyl radical content by photolysis according to the following equation (Faust and Hoigne 1990;Kavitha and Palanivelu 2004;Kim and Vogelpohl 1998):…”

Section: Photo-fentonmentioning

confidence: 99%

“…Besides, the photo-decarboxylation of ferric carboxylates is also produced as expressed by the following equations (Kavitha and Palanivelu 2004;Safarzadeh-Amiri et al 1996):…”

Section: Photo-fentonmentioning

confidence: 99%

The application of advanced oxidation technologies to the treatment of effluents from the pulp and paper industry: a review

Hermosilla

Merayo

Gascó

et al. 2014

Environ Sci Pollut Res

148

View full text Add to dashboard Cite

Paper industry is adopting zero liquid effluent technologies to reduce fresh water use and meet environmental regulations, which implies water circuits closure and the progressive accumulation of pollutants that must be removed before water re-use and final wastewater discharge. The traditional water treatment technologies that are used in paper mills (such as dissolve air flotation or biological treatment) are not able to remove recalcitrant contaminants. Therefore, advanced water treatment technologies, such as advanced oxidation processes (AOPs), are being included in industrial wastewater treatment chains aiming to either improve water biodegradability or its final quality. A deep review of the current state of the art regarding the use of AOPs for the treatment of the organic load of effluents from the paper industry is herein addressed considering mature and emerging treatments for a sustainable water use in this sector. Wastewater composition, which is highly dependent of the raw materials being used in the mills, the selected AOP itself, and its combination with other technologies, will determine the viability of the treatment. In general, all AOPs have been reported to achieve good organics removal efficiencies (COD removal >40%; and about an extra 20% if AOPs are combined with biological stages). Particularly, ozonation has been the most extensively reported and successfully implemented AOP at an industrial scale for effluent treatment or reuse within pulp and paper mills; although Fenton processes (photo-Fenton particularly) have actually addressed better oxidative results (COD removal ≈65-75%) at lab scale, but still need further development at large scale.

show abstract

The role of ferrous ion in Fenton and photo-Fenton processes for the degradation of phenol

Cited by 503 publications

References 31 publications

Catalytic oxidation of Methyl Orange by an amorphous FeOOH catalyst developed from a high iron-containing fly ash

Catalytic oxidation of Methyl Orange by an amorphous FeOOH catalyst developed from a high iron-containing fly ash

A ferrous oxalate mediated photo-Fenton system: Toward an increased biodegradability of indigo dyed wastewaters

The application of advanced oxidation technologies to the treatment of effluents from the pulp and paper industry: a review

Contact Info

Product

Resources

About