Catalytic activity comparison of natural ferrous minerals in photo-Fenton oxidation for tertiary treatment of dyeing wastewater

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.

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Study on the Advanced Treatment of Printing and Dyeing Wastewater by Fenton Oxidation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1010-1012.805 ◽

2014 ◽

Vol 1010-1012 ◽

pp. 805-808

Author(s):

Xiu Wen Wu ◽

Ping Ma ◽

Hui Xia Lan ◽

Heng Zhang ◽

Shan Hong Lan

Keyword(s):

Reaction Time ◽

Removal Efficiency ◽

Treatment Effect ◽

Cod Removal ◽

Fenton Oxidation ◽

Advanced Treatment ◽

Dyeing Wastewater ◽

Printing And Dyeing Wastewater ◽

Cod Removal Efficiency

The influence of H2O2、addition of Fe2+、pH、reaction time and temperature to advanced treatment effect of printing and dyeing wastewater with Fenton oxidation was studied. The results showed that when the addition of H2O2(the concentration was 30%) was 3mL/L,the addition of FeSO4·7H2O was 1.6g/L,pH was 4,the temperature was about 30°C,reacting time was 35min,the COD removal efficiency achieved above 55%,COD of effluent was below 45mg/L.

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Cobalt phosphide-based electrocatalysts: synthesis and phase catalytic activity comparison for hydrogen evolution

Journal of Materials Chemistry A ◽

10.1039/c6ta00575f ◽

2016 ◽

Vol 4 (13) ◽

pp. 4745-4754 ◽

Cited By ~ 188

Author(s):

Yuan Pan ◽

Yan Lin ◽

Yinjuan Chen ◽

Yunqi Liu ◽

Chenguang Liu

Keyword(s):

Catalytic Activity ◽

Hydrogen Evolution ◽

Crystalline Phase ◽

Catalytic Efficiency ◽

Cobalt Phosphide ◽

Carbon Species ◽

Activity Comparison

The HER catalytic efficiency of cobalt phosphide-based catalysts can be enhanced significantly by adjusting crystalline phase and carbon species structures.

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Study on Hair Dyeing Wastewater by Fenton Oxidation Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.522-524.168 ◽

2014 ◽

Vol 522-524 ◽

pp. 168-171

Author(s):

Jun Yin ◽

Wei Liu ◽

Yan Kai ◽

Wan Yao Wang ◽

Liang Liang

Keyword(s):

Wastewater Treatment ◽

Reaction Time ◽

Organic Pollutants ◽

Ph Value ◽

Fenton Oxidation ◽

Raw Water ◽

Dyeing Wastewater ◽

Fenton Reagent ◽

Experimental Conditions ◽

Oxidation Method

Hair dyeing wastewater is produced in coloring process. Its composition is complicated,in which contains a large number of organic pollutants and high color. Hair dyeing wastewater treatment can be effectively treated by Fenton oxidation method. The experiment results show that hair dyeing wastewater is treated by Fenton oxidation in this thesis. Fenton reagent is affected by hair dyeing wastewater, pH reaction time and many other factors. When raw water COD is 3800mg/L and chroma is 1210 times, by using Fenton oxidation method determine best experimental conditions: concentration of H2O2 is 24.5ml（30%H2O2), pH value is 3.0, nH2O2/nFe2+ is 7, reaction time is 60 min. Under the reaction condition , experimental results show that COD and color removal rates were 91.2% and 93.2% in hair dyeing wastewater by Fenton oxidation.

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Highly Porous Fe2O3/KIT-6 with Mg Substitution for Heterogeneous Fenton Oxidation of Imidacloprid with Enhanced Catalytic Activity

Chemistry Letters ◽

10.1246/cl.150007 ◽

2015 ◽

Vol 44 (5) ◽

pp. 601-603 ◽

Cited By ~ 5

Author(s):

Chunming Zheng ◽

Xiangzhi Cheng ◽

Peipei Chen ◽

Chuanwu Yang ◽

Shoumin Bao ◽

...

Keyword(s):

Catalytic Activity ◽

Fenton Oxidation ◽

Heterogeneous Fenton ◽

Heterogeneous Fenton Oxidation ◽

Mg Substitution ◽

Highly Porous

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Catalytic activity enhancement by thermal treatment and re-swelling process of natural containing iron-clay for Fenton oxidation

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2014.08.028 ◽

2014 ◽

Vol 436 ◽

pp. 37-40 ◽

Cited By ~ 4

Author(s):

Artit Ausavasukhi ◽

Tawan Sooknoi

Keyword(s):

Catalytic Activity ◽

Thermal Treatment ◽

Fenton Oxidation ◽

Activity Enhancement

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Kinetic studies on the degradation of crystal violet by the Fenton oxidation process

Water Science & Technology ◽

10.2166/wst.2010.170 ◽

2010 ◽

Vol 62 (1) ◽

pp. 1-7 ◽

Cited By ~ 7

Author(s):

H. Wu ◽

M. M. Fan ◽

C. F. Li ◽

M. Peng ◽

L. J. Sheng ◽

...

Keyword(s):

Crystal Violet ◽

Oxidation Process ◽

Degradation Kinetics ◽

Kinetic Studies ◽

Fenton Oxidation ◽

Dyeing Wastewater ◽

First Order ◽

Fenton Oxidation Process ◽

System Variables ◽

Kinetics Of

The degradation of dye crystal violet (CV) by Fenton oxidation process was investigated. The UV–Vis spectrogram has shown that CV can be degraded effectively by Fenton oxidation process. Different system variables namely initial H2O2 concentration, initial Fe2 + concentration and reaction temperature, which have effect on the degradation of CV by Fenton oxidation process, have been studied systematically. The degradation kinetics of CV was also elucidated based on the experimental data. The degradation of CV obeys the first-order reaction kinetics. The kinetic model can be described as k = 1.5 exp(−(7.5)/(RT))[H2O2]00.8718[Fe2+]00.5062. According to the IR spectrogram, it is concluded that the benzene ring of crystal violet has been destroyed by Fenton oxidation. The result will be useful in treating dyeing wastewater containing CV by Fenton oxidation process.

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