A simple modeling study of the Ce(IV) regeneration in sulfuric acid solutions

Ren, Xiulian; Wei, Qifeng

doi:10.1016/j.jhazmat.2011.05.085

Cited by 9 publications

(4 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Theoretically, the reduction potential of Ce(IV)/Ce(III) is +1.24 V in accordance with Ag/AgCl electrode in 1.0 M H2SO4 solution. Hence, our results were in the line with previous study which reported that H2SO4 is used for redox reaction of Ce(IV)/Ce(III) (Ren and Wei, 2011).…”

Section: The Best Supporting Electrolyte For Ce(iii)/ce(iv) Mediator ...supporting

confidence: 93%

Electrochemical Degradation of Methylene Blue using Ce(IV) Ionic Mediator in the Presence of Ag(I) Ion Catalyst for Environmental Remediation

Setiyanto¹,

Sari²,

Azis³

et al. 2022

JSM

View full text Add to dashboard Cite

Methylene blue (MB) is often used in textile industries and is actively present in the wastewater runs-off. Recently, mediated electrochemical oxidation (MEO) offers a fast, reliable and promising results for environmental remediation. Thus, we aimed to evaluate the electro-degradation potential of MB by MEO using Ce(IV) ionic mediator. Furthermore, we also observed the influence of addition Ag(I) ion catalyst in MEO for degradation of MB. The electro-degradation of MB was evaluated by cyclic voltammetry technique and was confirmed by UV-Vis spectrophotometry, high performance liquid chromatography (HPLC) analysis and back-titration analysis. The results showed that in the absence of Ag(I) ion catalyst, about 89 % of MB was decolorized within 30 min. When 2 mM of Ag(I) ion catalyst was applied, the electro-degradation of MB was increased to maximum value of 100%. The UV-Vis spectrum confirmed the electro-degradation of MB as suggested by decreased maximum absorbance value at λ 668 nm from 2.125 to 0.059. The HPLC analysis showed the formation of five new peaks at retention time of 1.331, 1.495, 1.757, 1.908, and 2.017 min, confirming the electro-degradation of MB. The back-titration analysis showed about 52.9% of CO2 was produced during electro-degradation of MB by MEO. More importantly, more than 97% of Ce(IV) ionic mediator were recovered in our investigation. Our results showed the potential of MEO using Ce(IV) ionic mediator to improve the wastewater runs-off quality from textile as well as other industries containing methylene blue.

show abstract

Section: The Best Supporting Electrolyte For Ce(iii)/ce(iv) Mediator ...supporting

confidence: 93%

Electrochemical Degradation of Methylene Blue using Ce(IV) Ionic Mediator in the Presence of Ag(I) Ion Catalyst for Environmental Remediation

Setiyanto¹,

Sari²,

Azis³

et al. 2022

JSM

View full text Add to dashboard Cite

show abstract

“…Tzedakis and Savall continued the development of the electrosynthesis of p-methoxybenzaldehyde in sulfuric acid coupled with dichloromethane extraction, modelling the process [104], and experimentally studied its kinetics, selectivity and operational conditions [105,106]. The kinetics of Ce(IV) regeneration in sulfuric acid in such operations in flow reactors have been recently modeled [107], highlighting the importance of ligand reorganization as a rate determining step.…”

Section: Mediated Electrosynthesismentioning

confidence: 99%

Electrochemical redox processes involving soluble cerium species

Arenas

León

Walsh

2016

Electrochimica Acta

View full text Add to dashboard Cite

Anodic oxidation of cerous ions and cathodic reduction of ceric ions, in aqueous acidic solutions, play an important role in electrochemical processes at laboratory and industrial scale. Ceric ions, which have been used for oxidation of organic wastes and off-gases in environmental treatment, are a wellestablished oxidant for indirect organic synthesis and specialised cleaning processes, including oxide film removal from tanks and process pipework in nuclear decontamination. They also provide a classical reagent for chemical analysis in the laboratory. The reversible oxidation of cerous ions is an important reaction in the positive compartment of various redox flow batteries during charge and discharge cycling. A knowledge of the thermodynamics and kinetics of the redox reaction is critical to an understanding of the role of cerium redox species in these applications. Suitable choices of electrode material (metal or ceramic; coated or uncoated), geometry/structure (2-or 3-dimensional) and electrolyte flow conditions (hence an acceptable mass transport rate) are critical to achieving effective electrocatalysis, a high performance and a long lifetime. This review considers the electrochemistry of soluble cerium species and their diverse uses in electrochemical technology, especially for redox flow batteries and mediated electrochemical oxidation.

show abstract

“…The voltammetric behavior of Ce(III) and NPE-10 were observed by using cyclic voltammetry (CV) in H2SO4 as the supporting electrolyte (Paulenova et al, 2002;Ren and Wei, 2011). The measurement of CV was aimed to determine whether the reaction is reversible or irreversible.…”

Section: Voltammetric Study Of Ce(iii)/ce(iv) and Npe-10mentioning

confidence: 99%

Degradation of Nonylphenol Ethoxylate-10 (NPE-10) by Mediated Electrochemical Oxidation (MEO) Technology

Setiyanto¹,

Syaifullah²,

Adyatmika³

et al. 2021

JSM

View full text Add to dashboard Cite

Nonylphenol ethoxylate (NPE-10) is a non-ionic surfactant that is synthesized from alkylphenol ethoxylate. The accumulation of NPE-10 in wastewater will endanger the ecosystem as well as the human being. Nowadays, NPE-10 can be degraded indirectly by using an electrochemical treatment by the advancement of technology. Thus, this study is aimed to evaluate the electro-degradation potential of NPE-10 by MEO using Ce(IV) ionic mediator. In addition, the influence of Ag(I) ionic catalyst in the performance of MEO for the degradation of NPE-10 was also observed. The potency of MEO technology in the NPE-10 degradation was evaluated by voltammetry technique and confirmed by titrimetry and LC-MS analysis. The results showed that in the absence of Ag(I) ionic catalyst, the degradation of NPE-10 by MEO was 85.93%. Furthermore, when the Ag(I) ionic catalyst was applied, the performance of MEO in degradation of NPE-10 was improved to 95.12%. The back titration using Ba(OH)2 confirmed the formation of CO2 by 46.79%, whereas the redox titration shows the total of degradation organic compounds by 42.50%. It was emphasized by the formation of two new peaks in the LC-MS chromatogram. In summary, our results confirmed the potential of MEO technology for the NPE-10 degradation.

show abstract

A simple modeling study of the Ce(IV) regeneration in sulfuric acid solutions

Cited by 9 publications

References 43 publications

Electrochemical Degradation of Methylene Blue using Ce(IV) Ionic Mediator in the Presence of Ag(I) Ion Catalyst for Environmental Remediation

Electrochemical Degradation of Methylene Blue using Ce(IV) Ionic Mediator in the Presence of Ag(I) Ion Catalyst for Environmental Remediation

Electrochemical redox processes involving soluble cerium species

Degradation of Nonylphenol Ethoxylate-10 (NPE-10) by Mediated Electrochemical Oxidation (MEO) Technology

Contact Info

Product

Resources

About