Iron Fixation to the Fibers of Activated Carbon as an Alternative to the Fenton Process

2009 ◽  
pp. 378-384
Keyword(s):  
Activated Carbon ◽  
Fenton Process

scholarly journals Effective heterogeneous electro-Fenton process of m-cresol with iron loaded actived carbon

RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 31049-31056 ◽  
Author(s):  
Loubna Bounab ◽  
Olalla Iglesias ◽  
Elisa González-Romero ◽  
Marta Pazos ◽  
M. Ángeles Sanromán
Keyword(s):  
Activated Carbon ◽  
Fenton Process ◽  
Fenton Catalyst ◽  
Actived Carbon

The degradation of m-cresol (MC) has been investigated by heterogeneous electro-Fenton process using iron loaded activated carbon (Fe-AC) as heterogeneous electro-Fenton catalyst.

Magnetic Nd2Fe14B Actived Carbon: Fabrication and Heterogeneous Fenton Oxidation of Congo Red

2014 ◽  
Vol 675-677 ◽  
pp. 426-429
Author(s):  
Chun Wei Yang ◽  
Dong Wang ◽  
Qian Tang
Keyword(s):  
Activated Carbon ◽  
Congo Red ◽  
Fenton Oxidation ◽  
Fenton Process ◽  
Heterogeneous Fenton ◽  
Pseudo First Order Reaction ◽  
Fenton Catalyst ◽  
Heterogeneous Fenton Oxidation ◽  
Dyestuff Wastewater ◽  
Actived Carbon

Magnetic Nd2Fe14B activated carbon, a new kind of heterogeneous Fenton catalyst has been synthesis to treat the dyestuff wastewater. The obtained catalysts were characterized by X-raydiffraction (XRD) and vibrating sample magnetometer (VSM), and the catalytic activity in heterogeneous Fenton oxidation of Congo red was evaluated. Experiments show that the Nd2Fe14B activated carbon has hard magnetic properties. The saturated magnetization, remanence and coercive force were 15.93emu/g, 6.0emu/g, and 1313Oe, respectively. The results also indicated that Nd2Fe14B activated carbon has good performance on azo dye Congo red oxidation with heterogeneous Fenton process. Under the optimum conditions ([NdFeB-AC-FC]0=20g/L, [H2O2]0= 8mmol/L and pH=7.0), Congo red degradation rate could reach 83.4%. The pH had few effects on heterogeneous Fenton process degraded Congo red. The kinetics studied shown that Congo red degraded followed the pseudo-first-order reaction by heterogeneous Fenton process.

scholarly journals Selection of the Activated Carbon Type for the Treatment of Landfill Leachate by Fenton-Adsorption Process

Molecules ◽  
2020 ◽  
Vol 25 (13) ◽  
pp. 3023
Author(s):  
Liliana San-Pedro ◽  
Roger Méndez-Novelo ◽  
Emanuel Hernández-Núñez ◽  
Manuel Flota-Bañuelos ◽  
Jorge Medina ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Adsorption Process ◽  
Physical Adsorption ◽  
Oxygen Demand ◽  
Isotherm Models ◽  
Adsorptive Capacity ◽  
Fenton Process ◽  
Landfill Leachates ◽  
Selection Of ◽  
Adsorption Stage

Sanitary landfill leachates usually have characteristics that depend on the region where they are generated and according to the age of the landfill, which is why a unique treatment for their sanitation has not been found. However, the adsorption preceded by the Fenton process has been proven to be highly efficient at removing contaminants. In this study, the adsorptive capacity of two types of activated carbon, granular and powdered, was analyzed to determine which was more efficient in the adsorption stage in the Fenton-adsorption process. Likewise, its behavior was analyzed using three isotherm models (Langmuir, Freundlich and Temkin), testing the raw leachate and the Fenton-treated one with both carbons. The adsorption that is carried out on the carbons is better adjusted to the Freundlich and Temkin models. It concludes that multilayers, through the physical adsorption, carry out the adsorption of pollutants on the surface of the carbons. The results show that, statistically, granular activated carbon is more efficient at removing chemical oxygen demand (COD), and powdered activated carbon removes color better. Finally, an adsorption column was designed for the Fenton-adsorption process that was able to remove 21.68 kgCOD/kg carbon. Removal efficiencies for color and COD were >99%.

scholarly journals Effectiveness of the dispersion of iron nanoparticles within micropores and mesopores of activated carbon for Rhodamine B removal in wastewater by the heterogeneous Fenton process

2019 ◽  
Vol 9 (7) ◽  
Author(s):  
Bi Gouessé Henri Briton ◽  
Laurent Duclaux ◽  
Yohan Richardson ◽  
Kouassi Benjamin Yao ◽  
Laurence Reinert ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Rhodamine B ◽  
Photoelectron Spectroscopy ◽  
Catalytic Efficiency ◽  
Iron Sulfate ◽  
Fenton Process ◽  
Heterogeneous Fenton ◽  
Pore Size Distributions ◽  
Iron Based ◽  
Carbon Catalysts

Abstract Iron-based nanoparticles were formed in the pores of a micro- and mesoporous activated carbon made from banana spike by the impregnation of iron sulfate at various ratios and further pyrolysis, in order to prepare three catalysts AC@Fe/1, AC@Fe/2, AC@Fe/3 having iron mass contents of 1.6%, 2.2% and 3.3%, respectively. The pore size distributions, transmission electron microscope observations and X-ray photoelectron spectroscopy analyses have revealed that iron-based nanoparticles of 1–50 nm diameter, containing O and P, are located mainly in the supermicropores and mesopores of the activated carbon. Catalysts have been used to remove Rhodamine B in an aqueous solution by the heterogeneous Fenton process. AC@Fe/3 catalyst has allowed achieving 93% of solution discoloration compared to 87.4% for AC@Fe/2 and 78.5% for AC@Fe/1 after 180 min in batch reaction. The catalytic efficiency of AC@Fe/3 is attributed to the highest dispersion of the iron-based nanoparticles in the activated carbon porosity. The effects of hydrogen peroxide and initial dye concentration, pH, catalyst amount and temperature on the Rhodamine B removal kinetics catalyzed by AC@Fe/3 were studied. This catalyst showed remarkable performances of the Rhodamine B mineralization and possibility of recycling.

An activated carbon fiber-supported graphite carbon nitride for effective electro-Fenton process

2018 ◽  
Vol 276 ◽  
pp. 377-388 ◽  
Author(s):  
Zhiqiao He ◽  
Jinping Chen ◽  
Yu Chen ◽  
Chengetai Portia Makwarimba ◽  
Xinwen Huang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Carbon Nitride ◽  
Activated Carbon Fiber ◽  
Fenton Process

scholarly journals Activated Carbon as a Cathode for Water Disinfection through the Electro-Fenton Process

Catalysts ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 601 ◽  
Author(s):  
Long Chen ◽  
Ameet Pinto ◽  
Akram N. Alshawabkeh
Keyword(s):  
Activated Carbon ◽  
Fenton Reaction ◽  
Large Scale ◽  
Low Cost ◽  
Water Disinfection ◽  
H2o2 Production ◽  
Fenton Process ◽  
Cathodic Material ◽  
Genetic Potential ◽  
By Products

Unlike many other water disinfection methods, hydroxyl radicals (HO•) produced by the Fenton reaction (Fe2+/H2O2) can inactivate pathogens regardless of taxonomic identity of genetic potential and do not generate halogenated disinfection by-products. Hydrogen peroxide (H2O2) required for the process is typically electrogenerated using various carbonaceous materials as cathodes. However, high costs and necessary modifications to the cathodes still present a challenge to large-scale implementation. In this work, we use granular activated carbon (GAC) as a cathode to generate H2O2 for water disinfection through the electro-Fenton process. GAC is a low-cost amorphous carbon with abundant oxygen- and carbon-containing groups that are favored for oxygen reduction into H2O2. Results indicate that H2O2 production at the GAC cathode is higher with more GAC, lower pH, and smaller reactor volume. Through the addition of iron ions, the electrogenerated H2O2 is transformed into HO• that efficiently inactivated model pathogen (Escherichia coli) under various water chemistry conditions. Chick–Watson modeling results further showed the strong lethality of produced HO• from the electro-Fenton process. This inactivation coupled with high H2O2 yield, excellent reusability, and relatively low cost of GAC proves that GAC is a promising cathodic material for large-scale water disinfection.

Conceptual comparison of pink water treatment technologies: granular activated carbon, anaerobic fluidized bed, and zero-valent iron-Fenton process

2004 ◽  
Vol 49 (5-6) ◽  
pp. 129-136 ◽  
Author(s):  
S.-Y. Oh ◽  
D.K. Cha ◽  
P.C. Chiu ◽  
B.J. Kim
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Fluidized Bed ◽  
Granular Activated Carbon ◽  
Fluidized Bed Reactor ◽  
Zero Valent Iron ◽  
Fenton Process ◽  
Treatment Technologies ◽  
Non Destructive ◽  
Gac Adsorption

Pink water, explosive-laden wastewater produced in army ammunition plants is often treated using expensive and non-destructive granular activated carbon (GAC) adsorption. This paper compares GAC adsorption and two alternative treatment technologies, anaerobic GAC fluidized bed reactor and zero-valent iron-Fenton process. The bench-scale demonstration of the zero-valent iron-Fenton process with real pink water is reported. The features of three technologies are compared and their advantages and drawbacks are discussed.

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