The Use of Ni/Sb–SnO2-based Membrane Electrode Assembly for Electrochemical Generation of Ozone and the Decolourisation of Reactive Blue 50 Dye Solutions

Zakaria, Khalid; Christensen, Paul

doi:10.1016/j.electacta.2014.05.013

Cited by 30 publications

(23 citation statements)

References 44 publications

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“…Limited studies on the electrochemical degradation of synthetic textile effluent by Sn/Sb/Ni-Ti anodes can be found in literature. In these studies, it is reported that 80-90% of COD and color removal is possible (Parsa and Abbasi, 2012;Zakaria and Christensen, 2014;da Silva and Jardim, 2006;Da Silva et al, 2010;Stucki et al, 1987;Cui et al, 2009;Naumczyk et al, 1996;Korbahti and Tanyolac, 2008;Nordin et al, 2013). Direct anodic oxidation is also too limited in these studies.…”

Section: Investigation Of Electrochemical Color Removal From Oid Wastmentioning

confidence: 99%

INVESTIGATION OF ELECTROCHEMICAL COLOR REMOVAL FROM ORGANIZED INDUSTRIAL DISTRICT (OID) WASTEWATER TREATMENT PLANTS USING NEW GENERATION Sn/Sb/Ni-Ti ANODES

2018

Global NEST Journal

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In this study, the application of Sn/Sb/Ni-Ti electrodes for the treatment of waste streams were investigated which is promising for ozone production by electrolysis of water because of their stability and high potential for ozone evolution reaction. These series of anodes have a high electrochemical ozone generation potential at ambient conditions (approximately up to 40% current efficiency). But using and testing of these novel anodes for real wastewater are too limited in the literature. Titanium mesh substrate coated with Sn/Sb/Ni-Ti alloy was used as anode immersed in wastewater at room temperature with platinized titanium cathode. These electrodes used for COD and color removal from OID wastewater in Inegol, Bursa, Turkey. Five operational parameters were evaluated for electrochemical COD and color removal processes, such as pH, salt content, applied voltage/current, current efficiency and contact time. Experimental results showed that after 30 min the electrochemical oxidation efficiency of COD and color could reach up to 98% and 99% respectively at pH 8.2 and temperature of 25°C as the optimum conditions. Current density observed as the most effective parameter for COD and color removal efficiencies. The lowest energy consumption was between 10-25 mA cm-2 of current density with only 0.6 kWh gCOD−1, while the highest energy consumption was 100 mA cm-2 of current density with 9.12 kWh gCOD−1 . The optimum current density value has been found as 50 mA cm-2 with 4.05 kWh gCOD−1 . These results were also supported with ANOVA test.

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Section: Investigation Of Electrochemical Color Removal From Oid Wastmentioning

confidence: 99%

INVESTIGATION OF ELECTROCHEMICAL COLOR REMOVAL FROM ORGANIZED INDUSTRIAL DISTRICT (OID) WASTEWATER TREATMENT PLANTS USING NEW GENERATION Sn/Sb/Ni-Ti ANODES

2018

Global NEST Journal

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“…They contain platinum and modified Titanium (Ti) coated with ceramic metal oxides film and nanomaterials. These group of electrodes were used for removal toxic compounds and metal ions such as; copper [43], ammonium nitrogen [44] and textile dyes [45][46][47][48][49][50][51][52][53][54]. The metal oxide-film electrodes such as tin oxide has good electro-catalytic properties related to chemical composition, the electronic structure and crystallinity of the oxide layer.…”

Section: Introductionmentioning

confidence: 99%

Novel Ti/TiHx/SnO2-Sb2O5-NiO-CNT electrode for electrochemical Ozone Generation for degradation of toxic textile azo dyes

Karimi

Bidoki

Benvidi

2021

Environmental Engineering Research

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Water pollution control and the development of clean technologies for water, air and soil treatments comprise one of the most important challenges for modern society. Ozone is known as a strong and clean oxidizing agent that can be used for water and wastewater treatment. In this research, a novel Ti/TiHx/SnO2-Sb2O5-NiO-CNT modified titanium electrode containing carbon nanotubes (CNT) was fabricated for in-situ ozone generation. The electrode was characterized using SEM, XRD and LSV techniques. CNT presence caused an increase in ozone generation efficiency leading to the higher concentrations of dissolved ozone in water compared to the recently reported researchers. Ozone generation at the surface of the electrode was determined using the standard indigo method. Electrochemical ozone was further used in degradation of C.I. Reactive red 195 (RR 195). It was found that the modified electrode could degrade 96% of RR 195 from initial concentration of 300 mg∙L-1 in 30 min under current density of 20 mA∙cm-2. COD removal was also measured as high as 60 percent.

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“…The most common approach to overcome this limitation is the addition of supporting electrolyte, typically Na 2 SO 4 and/or NaCl. Less explored alternatives have considered the direct application of EO to raw low conductivity aqueous matrices using microfluidic reactors,, or solid polymer electrolyte (SPE) cells . An SPE cell presents a sandwich configuration, i. e., anode/polymer electrolyte/cathode, which ensures an appropriate electron flow when immersed in a low conductivity medium.…”

Section: Introductionmentioning

confidence: 99%

“…SPE cells have been mainly employed in the electrochemical production of ozone . They have also offered good performances for water treatment, although only synthetic solutions prepared with deionized water have been tested so far . For example, the successful mineralization of benzyl alcohol using a BDD/Nafion®/BDD cell, and the dyes Safranin T and Crystal Violet using a BDD/Nafion®/RuO 2 cell has been described.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Treatment using a Solid Polymer Electrolyte Cell with Mesh Electrodes

et al. 2019

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This article reports the high performance of a solid polymer electrolyte cell, equipped with a Nafion® N117 membrane packed between a Nb/boron-doped diamond (Nb/BDD) mesh anode and a Ti/RuO 2 mesh cathode, to degrade the insecticide imidacloprid spiked at 1.2-59.2 mg L À 1 into low conductivity groundwater by electrochemical oxidation. The natural water matrix was first softened using valorized industrial waste in the form of zeolite as reactive sorbent. Total removal of the insecticide, always obeying pseudo-first-order kinetics, and maximum mineralization degrees of 70 %-87 % were achieved, with energy consumption of 26.4 � 1.6 kWh m À 3 . Active chlorine in the bulk and * OH at the BDD surface were the main oxidants. Comparative studies using simulated water with analogous anions content revealed that the natural organic matter interfered in the groundwater treatment. Trials carried out in ultrapure water showed the primary conversion of the initial N and Cl atoms of imidacloprid to NO 3 À and Cl À ions, being the latter anion eventually transformed into ClO 3 À and ClO 4 À ions. 6-Chloro-nicotinonitrile, 6-chloro-pyridine-3-carbaldehyde, and tartaric acid were identified as oxidation products.[a] R.

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The Use of Ni/Sb–SnO2-based Membrane Electrode Assembly for Electrochemical Generation of Ozone and the Decolourisation of Reactive Blue 50 Dye Solutions

Cited by 30 publications

References 44 publications

INVESTIGATION OF ELECTROCHEMICAL COLOR REMOVAL FROM ORGANIZED INDUSTRIAL DISTRICT (OID) WASTEWATER TREATMENT PLANTS USING NEW GENERATION Sn/Sb/Ni-Ti ANODES

INVESTIGATION OF ELECTROCHEMICAL COLOR REMOVAL FROM ORGANIZED INDUSTRIAL DISTRICT (OID) WASTEWATER TREATMENT PLANTS USING NEW GENERATION Sn/Sb/Ni-Ti ANODES

Novel Ti/TiHx/SnO2-Sb2O5-NiO-CNT electrode for electrochemical Ozone Generation for degradation of toxic textile azo dyes

Groundwater Treatment using a Solid Polymer Electrolyte Cell with Mesh Electrodes

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