Improved degradation of tetracycline, norfloxacin and methyl orange wastewater treatment with dual catalytic electrode assisted self-sustained Fe2+ electro-Fenton system: Regulatory factors, mechanisms and pathways

2022 ◽  
Vol 284 ◽  
pp. 120232
Author(s):  
Yuting Liu ◽  
Changfei Gao ◽  
Lifen Liu ◽  
Tingting Yu ◽  
Yihua Li
Keyword(s):  
Wastewater Treatment ◽  
Methyl Orange ◽  
Regulatory Factors ◽  
Fenton System

A low-cost solvent-free method to synthesize α-Fe2O3 nanoparticles with applications to degrade methyl orange in photo-fenton system

2020 ◽  
Vol 200 ◽  
pp. 110744 ◽  
Author(s):  
Hengli Xiang ◽  
Genkuan Ren ◽  
Xiushan Yang ◽  
Dehua Xu ◽  
Zhiye Zhang ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Low Cost ◽  
Solvent Free ◽  
Fe2o3 Nanoparticles ◽  
Fenton System

scholarly journals Investigation of the lamination of electrospun graphene-poly(vinyl alcohol) composite onto an electrode of bio-electro-Fenton microbial fuel cell

2017 ◽  
Vol 7 ◽  
pp. 184798041772742 ◽  
Author(s):  
Yi-Ta Wang ◽  
Yuan-Kuo Wang
Keyword(s):  
Electron Microscopy ◽  
Wastewater Treatment ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Reactive Black 5 ◽  
Cathode Chamber ◽  
Fenton System

The bio-electron-Fenton system integrates microbial fuel cell and Fenton process into a single system to destroy the organic and bio-refractory contaminants in wastewater. Its performance is closely dependent on the sufficient electron supplement by the oxidation process in anode chamber and the reduction process in cathode chamber. This article presents a novel cathode of a bio-electron-Fenton system which can simultaneously achieve good electron supplement and the wastewater treatment in cathode chamber. The cathode consists of indium-tin-oxide conductive glass on which layers of graphene-poly(vinyl alcohol) composite are sprayed by electrospinning. The material characterization is verified by Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy. The voltage, current, and power density of the system are verified by cyclic voltammetry. The wastewater treatment is verified by dye decolorization. With the addition ratio of 4 wt% graphene, the system achieves the optimal power density of 74.1 mW/m2, open-circuit voltage of 0.42 V, and the decolorization of reactive black 5 of 60.25%. By constant-resistance discharge testing within three-cycle, the system can stably supply a maximum voltage of 0.41 V or above. Hence, the proposed electrospun graphene-poly(vinyl alcohol) composite cathode electrode can not only improve the power-supply efficiency but also enhance the efficiency of wastewater treatment.

scholarly journals Fe-doped carbon aerogels from sodium alginate for the removal of methylene blue

2021 ◽  
Vol 293 ◽  
pp. 03015
Author(s):  
Zuozhao Zhai ◽  
Bin Ren ◽  
Lihui Zhang ◽  
Zhenfa Liu
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Sodium Alginate ◽  
Removal Efficiency ◽  
Acidic Condition ◽  
Carbon Aerogels ◽  
Alkaline Conditions ◽  
Fenton System

In this article, Fe-doped carbon aerogels from sodium alginate were used for the removal of methylene blue (MB) in water. Under acidic condition, the sample carbonized at 700 °C (T700) undergoes Fe-C micro-electrolysis to produce highly chemically active Fe2+ and [H] to degrade MB. Under neutral or alkaline conditions, Fe2+ produced by Fe-C micro-electrolysis become Fe(OH)3, which can effectively adsorb MB. In addition, when T700 combines with H2O2 to form Fenton system, the MB removal efficiency was significantly improved. The Fe-doped carbon aerogels can be used in wastewater treatment and when combine the materials with H2O2 can greatly improve the MB removal efficiency.

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