scholarly journals Removal of organotin compounds and metals from Swedish marine sediment using Fenton’s reagent and electrochemical treatment

2022 ◽  
Author(s):  
Anna Norén ◽  
Célia Lointier ◽  
Oskar Modin ◽  
Ann-Margret Strömvall ◽  
Sebastien Rauch ◽  
...  
Keyword(s):  
Electrochemical Treatment ◽  
Low Ph ◽  
Fenton’S Reagent ◽  
Contaminated Sediment ◽  
Dredged Sediment ◽  
Fenton's Reagent ◽  
Spiked Sediment ◽  
Effective Removal ◽  
Positive Correlations ◽  
Ph Level

AbstractMetal and tributyltin (TBT) contaminated sediments are problematic for sediment managers and the environment. This study is the first to compare Fenton’s reagent and electrochemical treatment as remediation methods for the removal of TBT and metals using laboratory-scale experiments on contaminated dredged sediment. The costs and the applicability of the developed methods were also compared and discussed. Both methods removed > 98% TBT from TBT-spiked sediment samples, while Fenton’s reagent removed 64% of the TBT and electrolysis 58% of the TBT from non-spiked samples. TBT in water phase was effectively degraded in both experiments on spiked water and in leachates during the treatment of the sediment. Positive correlations were observed between TBT removal and the added amount of hydrogen peroxide and current density. Both methods removed metals from the sediment, but Fenton’s reagent was identified as the most potent option for effective removal of both metals and TBT, especially from highly metal-contaminated sediment. However, due to risks associated with the required chemicals and low pH level in the sediment residue following the Fenton treatment, electrochemical treatment could be a more sustainable option for treating larger quantities of contaminated sediment.

Indirect Electrochemical Treatment of Bisphenol A in Water via Electrochemically Generated Fenton's Reagent

2003 ◽  
Vol 37 (16) ◽  
pp. 3716-3723 ◽  
Author(s):  
Belgin Gözmen ◽  
Mehmet A. Oturan ◽  
Nihal Oturan ◽  
Oktay Erbatur
Keyword(s):  
Bisphenol A ◽  
Electrochemical Treatment ◽  
Fenton’S Reagent ◽  
Fenton's Reagent

Use of Fenton's Reagent for the Degradation of TCE in Aqueous Systems and Soil Slurries

2000 ◽  
Vol 9 (4) ◽  
pp. 331-345 ◽  
Author(s):  
Katherine R. Weeks ◽  
Clifford J. Bruell ◽  
Nihar R. Mohanty
Keyword(s):  
Fenton’S Reagent ◽  
Aqueous Systems ◽  
Fenton's Reagent

The action of fenton's reagent on carbohydrates

Tetrahedron ◽  
1963 ◽  
Vol 19 (11) ◽  
pp. 1705-1710 ◽  
Author(s):  
G.J. Moody
Keyword(s):  
Fenton’S Reagent ◽  
Fenton's Reagent

Additions and Corrections - Oxidation of Mandelic Acid by Fenton's Reagent

1982 ◽  
Vol 104 (13) ◽  
pp. 3783-3783
Author(s):  
Cheves Walling ◽  
Kalyani Amarnath ◽  
Curt Campbell
Keyword(s):  
Mandelic Acid ◽  
Fenton’S Reagent ◽  
Fenton's Reagent

Kinetics and mechanism of oxidative decomposition of Congo red by Fenton’s reagent and its synergic effects on exposure to UV radiation

2021 ◽  
Vol 25 (7) ◽  
pp. 8-12
Author(s):  
P. Rajendran ◽  
K. Geethu ◽  
P. Bashpa ◽  
K. Bijudas
Keyword(s):  
Congo Red ◽  
Homogeneous Medium ◽  
Ultra Violet ◽  
Kinetics And Mechanism ◽  
Fenton’S Reagent ◽  
Fenton Reagent ◽  
Fenton's Reagent ◽  
Oxidative Decomposition ◽  
Ultra Violet Radiation ◽  
Thermodynamic Variables

Congo red is a toxic azo dye which is used extensively in industries like textile, paper, pulp and paper. Very high amount of Congo red from these industrial sources is discharged into natural water bodies resulting environmental pollution. The present work reports the kinetics and mechanism of oxidative decomposition of Congo red by Fenton’s reagent in homogeneous medium and also under ultra violet light irradiation. Kinetic parameters like effect of [Fe2+], [H2O2], [Congo red] and temperature on the decomposition of Congo red were studied. The reaction is found to be fractional order with [Fe2+] and first order with [H2O2] and [Congo red]. The rate of oxidative decomposition of Congo red by Fenton’ reagent showed a rapid increase of three times when irradiated with ultra violet radiation and completion of reaction occurred within 5-6 minute. Various thermodynamic variables were determined and the presence of isosbestic points on sequential scanning of oxidation kinetics proves that the reaction is very smooth, spontaneous and endothermic. A suitable mechanism is suggested based on the experimental results obtained.

Coagulation of textile secondary effluents with Fenton's reagent

1997 ◽  
Vol 36 (12) ◽  
pp. 215-222 ◽  
Author(s):  
Shyh-Fang Kang ◽  
Huey-Min Chang
Keyword(s):  
Hydrogen Peroxide ◽  
Cod Removal ◽  
Color Removal ◽  
Fenton’S Reagent ◽  
Fenton's Reagent ◽  
Effluent Standards ◽  
Secondary Effluents ◽  
Removal Efficiencies

This study was designed to use both artificial and real textile secondary effluents to evaluate (1) the COD and color removal efficiencies for ferrous coagulation and Fenton's coagulation, and (2) the feasibility of using hydrogen peroxide to improve ferrous coagulation to meet more stringent effluent standards. The results indicate that the optimum pHs for both ferrous coagulation and Fenton's preoxidation processes range between 8.0–10 and 3.0–5.0, respectively. The rate for color removal is faster than that for COD removal in the Fenton's preoxidation process. The removals of COD and color are mainly accomplished during Fenton's preoxidation step. The ratio of COD removal for Fenton's coagulation versus ferrous coagulation, given the same ferrous dosage, ranges from 1.4 to 2.3, and it ranges from 1.1 to 1.9 for color removal, using two effluent samples. Therefore, using hydrogen peroxide can enhance the ferrous coagulation, and this ensures more stringent effluent standards of COD and color are met.

Electro-Fenton as a feasible advanced treatment process to produce reclaimed water

2004 ◽  
Vol 50 (2) ◽  
pp. 83-90 ◽  
Author(s):  
A. Durán Moreno ◽  
B.A. Frontana-Uribe ◽  
R.M. Ramírez Zamora
Keyword(s):  
Reclaimed Water ◽  
Electrical Current ◽  
Primary Treatment ◽  
Operating Conditions ◽  
Treatment System ◽  
Continuous Reactor ◽  
Fenton’S Reagent ◽  
Fenton's Reagent ◽  
Fenton’S Reaction ◽  
The Cost

The feasibility of the electro-Fenton process to generate simultaneously both of the Fenton's reagent species (Fe2+/H2O2), was assessed as a potentially more economical alternative to the classical Fenton's reaction to produce reclaimed water. An air-saturated combined wastewater (mixture of municipal and laboratory effluents) was treated in discontinuous and continuous reactors at pH = 3.5. The discontinuous reactor was a 2 L electrochemical laboratory cell fitted with concentric graphite and iron electrodes. The continuous reactor tests used a pilot treatment system comprising the aforementioned electrochemical cell, two clarifiers and one sand filter. Several tests were carried out at different conditions of reaction time (0-60 min) and electrical current values (0.2-1.0 A) in the discontinuous reactor. The best operating conditions were 60 min and 1 A without filtration of effluents. At these conditions, in discontinuous and continuous reactors with filtration, the COD, turbidity and color removal were 65-74.8%, 77-92.3% and 80-100%, respectively. Fecal and total coliforms, Escherichia coli, Shigella and Salmonella sp. were not detected at the end of the pilot treatment system. Electrogeneration of the Fenton's reagent is also economical; its cost is one-fifth the cost reported for Advanced Primary Treatment.

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