Photo-electro-oxidation assisted peroxymonosulfate for decolorization of acid brown 14 from aqueous solution

Jaafarzadeh, Neemat; Ghanbari, Farshid; Moradi, Mahsa

doi:10.1007/s11814-014-0263-4

Cited by 58 publications

(16 citation statements)

References 30 publications

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“…Several authors have studied the effect of the coupling of UV irradiation on chemical and electrochemical processes for the treatment of wastewater by photo-chemical oxidation [16], photo-electro catalysis processes [32][33][34], processes based on Fenton's reaction chemistry [35][36][37][38] or photo-electrolysis [39,40]. In these studies, interesting results were obtained, observing significant improvements on the process efficiency for the removal of different organic compounds, which often may be explained taking into account the role of the different types of oxidants produced.…”

Section: H2o → •Oh + H + + E -mentioning

confidence: 99%

Electrolytic and electro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater

Cotillas

Vidales

Llanos

et al. 2016

Journal of Hazardous Materials

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This paper analyzes the advantages and drawbacks of the combination of UV irradiation with electrolysis with the aim to give insight about the feasibility of the application of this technology for the reclaiming of conventionally-treated wastewater. The oxidation of synthetic solutions containing five selected model complex pollutants has been compared, showing that UV irradiation improves the results of electrolysis for progesterone, metoprolol and caffeine and deteriorates the performance for the degradation of sulfamethoxazole and dimethyl-phthalate. Differences observed becomes lower when mineralization is compared showing that the effects of UV irradiation are diluted when a mixture of species is oxidized. Results suggest that high ThOD/TOC (Theoretical Oxygen Demand/Total Organic Carbon) ratios improve the synergistic coupling of technologies while low values lead to a clear antagonistic effect. Because during oxidation progress this ratio is decreased, the observed effect on mineralization is much lower than in the oxidation of the raw molecule. Opposite to this low effect on the oxidation of organics, the improvement in the performance of the disinfection by coupling UV to electrolysis is much clearer. In addition, UV irradiation modifies significantly the chlorine speciation and helps to prevent the formation of hazardous species such as chlorate and perchlorate during the electrochemical processes.

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Section: H2o → •Oh + H + + E -mentioning

confidence: 99%

Electrolytic and electro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater

Cotillas

Vidales

Llanos

et al. 2016

Journal of Hazardous Materials

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“…A/m 2 ), NaCl y en ausencia de luz UV se obtiene el 97.8 % de remoción de DCF; mientras que a 0.5 A (J = 12.64 A/m 2 ) se obtiene un porcentaje de degradación de 77.7 %, mostrando que a mayor intensidad de corriente, mayor porcentaje de remoción. Esto se debe a que al aumentar la corriente aplicada se presenta una mayor generación de H2O2, lo que induce una mayor producción de radicales hidroxilo (Jaafarzadeh, Ghanbari, & Moradi, 2015). Por otro lado, cuando se aplicaron 0.5 A se observó una notable diferencia entre el uso de cada uno de los electrolitos soporte; ya que con Na2SO4 se obtuvieron mejores resultados (90.5 y 98% en ausencia y presencia de luz UV, respectivamente), esto se relaciona con la producción de radicales persulfato que ayudan a la oxidación del DCF a intensidades de corriente más bajas que con NaCl;…”

Section: Efecto Del Electrolito Soporteunclassified

“…no obstante, al aumentar la intensidad a 1 A (J = 25.29 A/m 2 ), la eficiencia del proceso disminuye, alcanzando solamente un 81 % para los experimentos en ausencia de luz UV y 87. negativamente a las propiedades oxidativas del radical • OH (Jaafarzadeh et al, 2015;Yang et al, 2018).…”

Section: Efecto Del Electrolito Soporteunclassified

Tratamiento del diclofenaco en solución acuosa mediante electro-oxidación utilizando electrodos de DDB

Hernández

Castañeda

Linares

et al. 2021

Tecnol. cienc. agua

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The consumption of pharmaceutical products such as non-steroidal antiinflammatories, including 2-[2-(2,6-dichloroanilino) phenyl] acetic acid, better known as diclofenac, has been increasing due to its easy acquisition, as a consequence the environment has had repercussions since it is excreted through the urine, causing a potential risk to be discharged into water bodies and creating persistence in the environment and in the processes of wastewater treatment. Therefore, it is necessary to use alternative processes of advanced oxidation because they have proven to be efficient in the degradation of xenobiotic compounds. The objective of this research was to apply an electro-oxidation system and photoelectro-oxidation by boron-doped diamond (BDD) electrodes using a BDD-BDD configuration to determine the operation variables for the oxidation of diclofenac in aqueous solution. The optimal conditions of the study were: current intensity of 1 A (current density (J) = 25.29 A / m 2 ), the pH of the sample (5-6); NaCl as supporting electrolyte, in the absence of UV light, and treatment time of 360 minutes. The removal efficiency of diclofenac was 97.8 %, the TOC, COD showed efficiencies of 64.4 % and 89.3 %, respectively, whereas the biochemical oxygen demand (BOD5) decrease after of treatment. The degradation kinetic of diclofenac was adjusted to a pseudo first order model, with a half-life time of 63.89 minutes and a k = 1.08 x 10 -2 min -1 . The removal percentages of diclofenac using liquid chromatography (HPLC) were 99.64 %, 98.76 % and 95.15 % for the concentrations of 150, 50 and 10 mg/l, respectively. 2021, Instituto Mexicano de Tecnología del AguaOpen Access bajo la licencia CC BY-NC-SA 4.0

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“…so-called self-quenching (Cai, Zhang, Zhong, & Hou, 2015;Jaafarzadeh, Ghanbari, & Moradi, 2015;Shukla, Fatimah, Wang, Ang, & Tadé, 2010) would produce weaker oxidants, such as hydroperoxyl radicals and peroxymonosulfate radicals (Equation 6-9) (Ghanbari, Khatebasreh, Mahdavianpour, & Lin, 2019;Ghanbari & Martínez-Huitle, 2019).…”

Section: Research Articlementioning

confidence: 99%

Synthetic NiO catalyst‐assisted peroxymonosulfate for degradation of benzoic acid from aqueous solution

Huo

Zhou

Zhang

et al. 2020

Water Environment Research

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A heterogeneous NiO catalyst was prepared by a precipitation process using nickel nitrate with oxalic acid and tested for heterogeneous oxidation of benzoic acid (BA) in the presence of peroxymonosulfate (PMS). It was found that the synthetic NiO is highly effective in heterogeneous activation of PMS to produce sulfate radicals ( SO4·- ) and hydroxyl radicals (·OH), and also presents stable performance in the heterogeneous activation of PMS for BA degradation. Physicochemical properties of the NiO catalyst were characterized by several techniques, such as thermogravimetric analysis, Brunauer‐Emmett‐Teller, Fourier transform infrared spectroscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. It was found that NiO and NiOOH were formed on the synthetic NiO catalyst and were stably distributed on the catalyst surface. Nearly 95% decomposition could be achieved in 30 min at the conditions of 500 ml 20 μM BA solution, 0.25 g catalyst, and [PMS]:[BA] = 30:1. The heterogeneous reactions, the effects of PMS concentration, and catalyst dosage on the BA degradation were investigated. The heterogeneous BA degradation reactions followed first‐order kinetics. Additionally, quenching experiments proved that the dominant radical in the solution was ·OH. The experiments results also showed that this approach is effective for the degradation of many other pollutants (such as tetracycline hydrochloride, 2, 4‐dichlorophenol, Acid orange 7, rhodamine B, and methyl red). Practitioner points A novel NiO material was fabricated for degradation of benzoic acid. The synthetic NiO catalyst comprised active NiO and NiOOH. The main radical for benzoic acid removal rate was ·OH. A plausible mechanism for catalyzed degradation of the benzoic acid was proposed.

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Photo-electro-oxidation assisted peroxymonosulfate for decolorization of acid brown 14 from aqueous solution

Cited by 58 publications

References 30 publications

Electrolytic and electro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater

Electrolytic and electro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater

Tratamiento del diclofenaco en solución acuosa mediante electro-oxidación utilizando electrodos de DDB

Synthetic NiO catalyst‐assisted peroxymonosulfate for degradation of benzoic acid from aqueous solution

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