Hydroxyl radical concentration profile in photo-Fenton oxidation process: Generation and consumption of hydroxyl radicals during the discoloration of azo-dye Orange II

Chemosphere ◽  
2011 ◽  
Vol 82 (10) ◽  
pp. 1422-1430 ◽  
Author(s):  
Takuya Maezono ◽  
Masahiro Tokumura ◽  
Makoto Sekine ◽  
Yoshinori Kawase
Keyword(s):  
Hydroxyl Radical ◽  
Hydroxyl Radicals ◽  
Concentration Profile ◽  
Azo Dye ◽  
Oxidation Process ◽  
Fenton Oxidation ◽  
Orange Ii ◽  
Radical Concentration ◽  
Fenton Oxidation Process

Analysis of a complex produced in the Fenton oxidation process

2014 ◽  
Vol 69 (5) ◽  
pp. 1115-1119 ◽  
Author(s):  
Chang Wang ◽  
Siyue Zhang ◽  
Sakai Yuji ◽  
Zongpeng Zhang
Keyword(s):  
Hydrogen Peroxide ◽  
Complex Formation ◽  
Hydroxyl Radical ◽  
Fenton Reaction ◽  
Oxidation Process ◽  
Fenton Oxidation ◽  
Radical Theory ◽  
Uv Visible ◽  
Iron Based ◽  
Fenton Oxidation Process

The absorbances of different concentrations of Fe2+, Fe3+ and H2O2 were investigated by UV-visible spectrophotometry without separating the substances. The law of complex formation was studied by considering changes in the UV-vis spectra of mixtures of these three substances. The results show that upon eliminating the influence of the substrate, an iron-based complex was present in the Fenton reaction, which exhibited substantial absorbance from 190 to 500 nm. Therefore, the presence of an unknown complex in the Fenton oxidation process was verified and its concentration varied with a change in the concentration of hydrogen peroxide. This study provides a strong foundation for further studies into the mechanism of traditional hydroxyl radical theory of the Fenton reaction.

Color and COD Removal of Azo Dye ‘Basic Blue 9’ by Fenton Oxidation Process: Determined of Optimal Parameters and Kinetic Study

2013 ◽  
Vol 16 (2) ◽  
Author(s):  
Nese Ertugay ◽  
Filiz Nuran Acar
Keyword(s):  
Azo Dye ◽  
Oxidation Process ◽  
Fenton Oxidation ◽  
Fenton Process ◽  
Optimal Parameters ◽  
Aromatic Rings ◽  
Reaction Parameters ◽  
Spectral Changes ◽  
Fenton Oxidation Process ◽  
Color And Cod Removal

AbstractAdvanced oxidation of an azo dye, Basic Blue 9 (BB9) by Fenton oxidation was investigated in batch experiments. The UV-vis spectral changes of in aqueous solution during Fenton process were studied. It was easier to destruct the azo linkage group than to destruct the aromatic rings of (BB9) by Fenton process. The effects of different reaction parameters such as initial ferrous concentration, initial hydrogen peroxide (H

Degradation of azo dye Amido black 10B in aqueous solution by Fenton oxidation process

2007 ◽  
Vol 74 (3) ◽  
pp. 647-652 ◽  
Author(s):  
Jian-Hui Sun ◽  
Sheng-Peng Sun ◽  
Guo-Liang Wang ◽  
Li-Ping Qiao
Keyword(s):  
Aqueous Solution ◽  
Azo Dye ◽  
Oxidation Process ◽  
Fenton Oxidation ◽  
Amido Black 10B ◽  
Amido Black ◽  
Fenton Oxidation Process ◽  
Degradation Of Azo Dye

Rapid Mineralization of Azo-Dye Wastewater by Microwave Synergistic Electro-Fenton Oxidation Process

2012 ◽  
Vol 116 (13) ◽  
pp. 7457-7463 ◽  
Author(s):  
Yujing Wang ◽  
Hongying Zhao ◽  
Junxia Gao ◽  
Guohua Zhao ◽  
Yonggang Zhang ◽  
...  
Keyword(s):  
Azo Dye ◽  
Oxidation Process ◽  
Fenton Oxidation ◽  
Dye Wastewater ◽  
Fenton Oxidation Process

Decolorization of an azo dye Orange G in aqueous solution by Fenton oxidation process: Effect of system parameters and kinetic study

2009 ◽  
Vol 161 (2-3) ◽  
pp. 1052-1057 ◽  
Author(s):  
Sheng-Peng Sun ◽  
Cheng-Jie Li ◽  
Jian-Hui Sun ◽  
Shao-Hui Shi ◽  
Mao-Hong Fan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Kinetic Study ◽  
Azo Dye ◽  
Oxidation Process ◽  
Fenton Oxidation ◽  
System Parameters ◽  
Orange G ◽  
Fenton Oxidation Process

Study on Pretreatment of Dye Wastewater by Fenton Oxidation Process

2012 ◽  
Vol 627 ◽  
pp. 378-381
Author(s):  
Bi Rong Wang
Keyword(s):  
Reaction Time ◽  
Oxidation Process ◽  
Removal Rate ◽  
Fenton Oxidation ◽  
Dye Wastewater ◽  
Dyeing Wastewater ◽  
Reaction Conditions ◽  
Fenton Oxidation Process

Fenton pretreatment has been used for treating dye wastewater. The effects of the dos of H2O2 and FeSO4, reaction time and pH on the removal COD were investigated. It was found that, when the reaction conditions are as follows: COD 2850 mg/L dyeing wastewater, the dosage of H2O2 is 140mmol/L, FeSO4 17.02 mmol/L, pH 7.6, and reaction time 1.0 h, the CODcr of dye wastewater removal rate of up to 70%. Fenton pretreatment process of dye wastewater has a broad prospect.

Optimization of the operating parameters using RSM for the Fenton oxidation process and adsorption on vegetal carbon of MO solutions

2014 ◽  
Vol 20 (3) ◽  
pp. 848-857 ◽  
Author(s):  
Adriana Saldaña-Robles ◽  
Ricardo Guerra-Sánchez ◽  
Manuel I. Maldonado-Rubio ◽  
Juan M. Peralta-Hernández
Keyword(s):  
Oxidation Process ◽  
Fenton Oxidation ◽  
Operating Parameters ◽  
Fenton Oxidation Process

Pollutant removal and biodegradation assessment of tannery effluent treated by conventional Fenton oxidation process

2018 ◽  
Vol 6 (6) ◽  
pp. 7070-7079 ◽  
Author(s):  
Fernando H. Borba ◽  
Leandro Pellenz ◽  
Francine Bueno ◽  
Jonas Jean Inticher ◽  
Luana Braun ◽  
...  
Keyword(s):  
Oxidation Process ◽  
Pollutant Removal ◽  
Fenton Oxidation ◽  
Tannery Effluent ◽  
Fenton Oxidation Process

scholarly journals The Treatment of IRN77/78 Resin Using Fenton Oxidation Process

2018 ◽  
Vol 392 ◽  
pp. 032042
Author(s):  
Wendong Feng ◽  
Jian Li ◽  
Shaoqing Jia ◽  
Yunhai Wang ◽  
Dunyi Ye
Keyword(s):  
Oxidation Process ◽  
Fenton Oxidation ◽  
Fenton Oxidation Process
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