Electrochemical degradation of sulfamethoxazole and trimethoprim at boron-doped diamond electrode: Performance, kinetics and reaction pathway

Amorim, Kamila P. de; Romualdo, Lincoln L.; Andrade, Leonardo S.

doi:10.1016/j.seppur.2013.10.010

Cited by 96 publications

(35 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Advanced oxidation processes (AOPs) based on hydroxyl radical (HO • ) oxidation, such as photolysis (Ryan et al, 2011), electrochemical oxidation (De Amorim et al, 2013), and catalytic ozonation (Gonçalves et al, 2012) have indicated a certain success in the degradation of antibiotics. Recently, increasing attention has been paid to the catalytic peroxymonosulfate (HSO5 -, PMS) oxidation based on sulfate radicals (SO4 •-) due to its high efficiency of selection and degradation for some refractory organic contaminants (Neta et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

Efficient degradation of sulfamethoxazole by the Fe(II)/HSO5− process enhanced by hydroxylamine: Efficiency and mechanism

Liu

Han

et al. 2017

Journal of Hazardous Materials

168

View full text Add to dashboard Cite

Fenton or Fenton-like processes have been regarded as feasible methods to degrade a wide variety of contaminants by generating reactive species, but the efficiency is highly affected by the slow transformation from Fe(III) to Fe(II) as well as pH. This study proposed a method by adding hydroxylamine (HA) to the Fe(II)/HSO5 -(Fe(II)/PMS) process to accelerate the degradation of contaminants, selecting a broad-spectrum sulfonamide antibiotic -

show abstract

Section: Introductionmentioning

confidence: 99%

Efficient degradation of sulfamethoxazole by the Fe(II)/HSO5− process enhanced by hydroxylamine: Efficiency and mechanism

Liu

Han

et al. 2017

Journal of Hazardous Materials

168

View full text Add to dashboard Cite

show abstract

“…Numerous studies have shown that a combination of direct transfer of electrons and %OH oxidation are involved in the oxidation pathways of various organic compounds. Through these oxidation pathways, electrochemical oxidation processes have demonstrated their great ability to efficiently degrade a wide range of refractory pharmaceuticals, such as paracetamol [17], atenolol [18], trimethoprim [19] and sulfachloropyridazine [20]. Nevertheless, almost all of these studies were performed in an aqueous solution that contained only a single pharmaceutical compound.…”

Section: Introductionmentioning

confidence: 99%

An experimental and modelling study of the electrochemical oxidation of pharmaceuticals using a boron-doped diamond anode

Lan

Coetsier

Causserand

et al. 2018

Chemical Engineering Journal

View full text Add to dashboard Cite

OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@listes-diff.inp-toulouse.fr An experimental and modelling study of the electrochemical oxidation of pharmaceuticals using a boron-doped diamond anode Yandi Lan, Clémence Coetsier, Christel Causserand, Karine Groenen Serrano A B S T R A C TThis paper deals with an experimental and modelling study on the electrochemical oxidation of refractory pharmaceuticals using a boron-doped diamond (BDD) anode. Different parameters have been investigated, such as the role of salts (sulfates), the presence of other organics, and the influence of applied current intensity. Ciprofloxacin (CIP), Sulfamethoxazole (SMX) and Salbutamol (SALBU) were used for models of pharmaceuticals, and urea as a model for a common organic. The complete removal of pharmaceuticals was observed in all electrolyses under galvanostatic conditions. The presence of common organic waste or other pharmaceutical has no significant impact on the degradation of the CIP target molecule. A mathematical model predicting the temporal concentration variation of organics with electroxidation time has been developed. In this model, different oxidation pathways have been considered: the transfer of electrons (direct oxidation) or of oxygen atoms via the reaction with either hydroxyl radicals or/and with strong electrogenerated oxidants. Excellent correlation with experiments is obtained under all experimental conditions.

show abstract

“…Numerous studies were carried out to investigate the electrochemical behavior of the BDD anode for the removal of pharmaceutical products, such as 17 b-estradiol [13], estrone [14], paracetamol [15], sulfamethoxazole [16,17], atenolol [18] and trimethoprim [17] in synthetic solutions. In all cases, total mineralization has been achieved.…”

Section: Introductionmentioning

confidence: 99%

On the role of salts for the treatment of wastewaters containing pharmaceuticals by electrochemical oxidation using a boron doped diamond anode

Lan

Coetsier

Causserand

et al. 2017

Electrochimica Acta

153

View full text Add to dashboard Cite

OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. Refractory pharmaceuticals remain in biologically treated wastewater and are continuously discharged into aquatic systems due to their limited biodegradability. Electrochemical oxidation is promising for the treatment of such refractory compounds, in particular using a boron doped diamond (BDD) anode. This study investigates the role of salts, such as sulfates and chlorides in the electrochemical treatment of wastewater. The presence of sulfates accelerated the removal of ciprofloxacin and sulfamethoxazole, but had no effect on the oxidation of salbutamol. This comparison highlights the selectivity of the reaction between organics and sulfate radicals. The addition of chlorides into the solution led to a remarkablyfaster degradation of ciprofloxacin. However, incomplete mineralization was observed at high current densities due to the significant formation of halogenated organic compounds (AOX). The formation of refractory and toxic compounds such as ClO 4 À and AOX can be limited under the control of (i) applied current intensity and (ii) duration of electrolysis. Electrochemical oxidation of concentrated biologicallytreated hospital wastewater investigated the excellent removal of biorefractory pharmaceuticals and confirmed the acceleration effect of salts on pharmaceutical degradation.

show abstract

Electrochemical degradation of sulfamethoxazole and trimethoprim at boron-doped diamond electrode: Performance, kinetics and reaction pathway

Cited by 96 publications

References 38 publications

Efficient degradation of sulfamethoxazole by the Fe(II)/HSO5− process enhanced by hydroxylamine: Efficiency and mechanism

Efficient degradation of sulfamethoxazole by the Fe(II)/HSO5− process enhanced by hydroxylamine: Efficiency and mechanism

An experimental and modelling study of the electrochemical oxidation of pharmaceuticals using a boron-doped diamond anode

On the role of salts for the treatment of wastewaters containing pharmaceuticals by electrochemical oxidation using a boron doped diamond anode

Contact Info

Product

Resources

About